diff --git a/islandora/include/rdf_mapping.inc b/islandora/include/rdf_mapping.inc
index 1def7777..34b193a9 100644
--- a/islandora/include/rdf_mapping.inc
+++ b/islandora/include/rdf_mapping.inc
@@ -42,11 +42,11 @@ function islandora_get_default_rdf_mapping($bundle, array $rdf_types) {
         ),
         ISLANDORA_FEDORA_HAS_PARENT_FIELD => array(
           'predicates' => array('fedora:hasParent'),
-          'datatype' => 'xsd:string',
+          'type' => 'rel',
         ),
         ISLANDORA_PCDM_HAS_MEMBER_FIELD => array(
           'predicates' => array('pcdm:hasMember'),
-          'datatype' => 'xsd:string',
+          'type' => 'rel',
         ),
       ),
     ),
diff --git a/islandora_collection/islandora_collection.module b/islandora_collection/islandora_collection.module
index 169b7460..4126a087 100644
--- a/islandora_collection/islandora_collection.module
+++ b/islandora_collection/islandora_collection.module
@@ -71,7 +71,8 @@ function islandora_collection_node_postinsert($node) {
   }
 
   $node = array_pop($nodes);
-  httprl_request("http://localhost:8080/islandora-services/rest/collection",
+  // Don't forget the trailing slash.
+  httprl_request("http://localhost:8181/islandora/rest/collection/",
                  array(
                    'method' => 'POST',
                    'data' => json_encode($node),
@@ -80,7 +81,7 @@ function islandora_collection_node_postinsert($node) {
 }
 
 /**
- * Implements hook_update().
+ * Implements hook_node_postupdate().
  */
 function islandora_collection_node_postupdate($node) {
   if (isset($_SERVER['HTTP_IGNORE_HOOKS']) && strcmp(strtolower($_SERVER['HTTP_IGNORE_HOOKS']), "true") == 0) {
@@ -105,10 +106,31 @@ function islandora_collection_node_postupdate($node) {
 
   $node = array_pop($nodes);
   $uuid = $node->uuid;
-  httprl_request("http://localhost:8080/islandora-services/rest/collection/$uuid",
+  httprl_request("http://localhost:8181/islandora/rest/collection/$uuid",
                  array(
                    'method' => 'PUT',
                    'data' => json_encode($node),
                  ));
   $response = httprl_send_request();
 }
+
+/**
+ * Implements hook_node_postdelete().
+ */
+function islandora_collection_node_postdelete($node) {
+  if (isset($_SERVER['HTTP_IGNORE_HOOKS']) && strcmp(strtolower($_SERVER['HTTP_IGNORE_HOOKS']), "true") == 0) {
+    return;
+  }
+
+  // Exit early if it's not a collection.
+  if (strcmp($node->type, ISLANDORA_COLLECTION_CONTENT_TYPE) != 0) {
+    return;
+  }
+
+  $uuid = $node->uuid;
+  httprl_request("http://localhost:8181/islandora/rest/collection/$uuid",
+                 array(
+                   'method' => 'DELETE',
+                 ));
+  $response = httprl_send_request();
+}
diff --git a/islandora_delete_by_fedora_uri_service/include/islandora_delete_by_fedora_uri_service.inc b/islandora_delete_by_fedora_uri_service/include/islandora_delete_by_fedora_uri_service.inc
new file mode 100644
index 00000000..0c2e9a88
--- /dev/null
+++ b/islandora_delete_by_fedora_uri_service/include/islandora_delete_by_fedora_uri_service.inc
@@ -0,0 +1,42 @@
+<?php
+
+/**
+ * @file
+ * Provides the callback implementations for the service.
+ */
+
+/**
+ * The POST callback for the deletion by Fedora URI service.
+ *
+ * @param array $args
+ *   JSON encoded arguments to delete function.
+ *
+ * @return array
+ *   JSON encoded response message.
+ */
+function islandora_delete_by_fedora_uri_service_delete(array $args) {
+  // Hack the Fedora path out of the POST data.
+  $fedora_uri = $args['fedoraUri'];
+
+  // Get entities identified by Fedora path.
+  $query = new EntityFieldQuery();
+  $results = $query->fieldCondition('field_fedora_path', 'value', $fedora_uri)
+    ->execute();
+
+  // Delete 'em all.
+  foreach ($results as $entity_type => $entities) {
+    $ids = array_keys($entities);
+    if (entity_delete_multiple($entity_type, $ids) === FALSE) {
+      $response[] = "Could not delete any $entity_type identified by $fedora_uri.";
+    }
+    else {
+      $response[] = "Deleted entities of type $entity_type with ids " . implode(', ', $ids) . ".";
+    }
+  }
+
+  if (!isset($response)) {
+    $response[] = "Could not find any entities identified by $fedora_uri.";
+  }
+
+  return $response;
+}
diff --git a/islandora_delete_by_fedora_uri_service/islandora_delete_by_fedora_uri_service.info b/islandora_delete_by_fedora_uri_service/islandora_delete_by_fedora_uri_service.info
new file mode 100644
index 00000000..3c1d5a48
--- /dev/null
+++ b/islandora_delete_by_fedora_uri_service/islandora_delete_by_fedora_uri_service.info
@@ -0,0 +1,6 @@
+name = Islandora Delete By Fedora URI Service
+description = "Deletes Drupal nodes by Fedora URI.  Needed for Sync to handle delete events that don't originate from Drupal."
+package = Islandora
+version = 7.x-dev
+core = 7.x
+dependencies[] = rest_server
diff --git a/islandora_delete_by_fedora_uri_service/islandora_delete_by_fedora_uri_service.module b/islandora_delete_by_fedora_uri_service/islandora_delete_by_fedora_uri_service.module
new file mode 100644
index 00000000..6b234b35
--- /dev/null
+++ b/islandora_delete_by_fedora_uri_service/islandora_delete_by_fedora_uri_service.module
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * @file
+ * Provides a service for deleting Drupal nodes by Fedora path.
+ */
+
+/**
+ * Implements hook_permission().
+ */
+function islandora_delete_by_fedora_uri_service_permission() {
+  return array(
+    'islandora delete by fedora uri' => array(
+      'title' => t('Delete by Fedora URI.'),
+      'description' => t('Allows external sources to delete Drupal nodes by Fedora URI.'),
+    ),
+  );
+}
+
+/**
+ * Implements hook_services_resources().
+ */
+function islandora_delete_by_fedora_uri_service_services_resources() {
+  return array(
+    'delete_by_fedora_uri' => array(
+      'create' => array(
+        'help' => t('Deletes a Drupal node by the Fedora URI supplied in the POST data.'),
+        'file' => array(
+          'type' => 'inc',
+          'module' => 'islandora_delete_by_fedora_uri_service',
+          'name' => 'include/islandora_delete_by_fedora_uri_service',
+        ),
+        'callback' => 'islandora_delete_by_fedora_uri_service_delete',
+        'access callback' => 'user_access',
+        'access arguments' => array('islandora delete by fedora uri'),
+        'args' => array(
+          array(
+            'name' => 'args',
+            'type' => 'array',
+            'description' => t("JSON data containing arguments to the delete function (e.g. the Fedora URI)"),
+            'source' => 'data',
+            'optional' => FALSE,
+          ),
+        ),
+      ),
+    ),
+  );
+}