diff --git a/CHANGES.txt b/CHANGES.txt
index 40846e4..7e7c53c 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,6 @@
+Oct 22, 2013 - v0.5.7  Super boxes constructors now take optional box list
+    argument.
+
 Oct 13, 2013 - v0.5.6  Fixed handling of non-ascii chars in XML boxes.  Fixed
     some docstring errors in jp2box module.
 
diff --git a/glymur/jp2box.py b/glymur/jp2box.py
index 52ad263..8303981 100644
--- a/glymur/jp2box.py
+++ b/glymur/jp2box.py
@@ -1989,6 +1989,10 @@ class UUIDListBox(Jp2kBox):
         self.length = length
         self.offset = offset
 
+    def __repr__(self):
+        msg = "glymur.jp2box.UUIDListBox({0})".format(self.ulst)
+        return msg
+
     def __str__(self):
         msg = Jp2kBox.__str__(self)
         for j, uuid_item in enumerate(self.ulst):
@@ -2040,11 +2044,15 @@ class UUIDInfoBox(Jp2kBox):
     box : list
         List of boxes contained in this superbox.
     """
-    def __init__(self, length=0, offset=-1):
+    def __init__(self, box=[], length=0, offset=-1):
         Jp2kBox.__init__(self, box_id='uinf', longname='UUIDInfo')
         self.length = length
         self.offset = offset
-        self.box = []
+        self.box = box
+
+    def __repr__(self):
+        msg = "glymur.jp2box.UUIDInfoBox(box={0})".format(self.box)
+        return msg
 
     def __str__(self):
         msg = Jp2kBox.__str__(self)
diff --git a/glymur/test/test_jp2box.py b/glymur/test/test_jp2box.py
index 55a7b02..b82af47 100644
--- a/glymur/test/test_jp2box.py
+++ b/glymur/test/test_jp2box.py
@@ -23,6 +23,7 @@ import struct
 import sys
 import tempfile
 import uuid
+from uuid import UUID
 import xml.etree.cElementTree as ET
 
 if sys.hexversion < 0x02070000:
@@ -839,6 +840,24 @@ class TestRepr(unittest.TestCase):
         self.assertEqual(newbox.flag, flag)
         self.assertEqual(newbox.url, url)
 
+    def test_uuidinfo_box(self):
+        """Verify __repr__ method on uinf box."""
+        uinf = glymur.jp2box.UUIDInfoBox()
+        newbox = eval(repr(uinf))
+        self.assertEqual(newbox.box_id, 'uinf')
+        self.assertEqual(len(newbox.box), 0)
+
+    def test_uuidlist_box(self):
+        """Verify __repr__ method on ulst box."""
+        uuid1 = uuid.UUID('00000000-0000-0000-0000-000000000001')
+        uuid2 = uuid.UUID('00000000-0000-0000-0000-000000000002')
+        uuids = [uuid1, uuid2]
+        ulst = glymur.jp2box.UUIDListBox(ulst=uuids)
+        newbox = eval(repr(ulst))
+        self.assertEqual(newbox.box_id, 'ulst')
+        self.assertEqual(newbox.ulst[0], uuid1)
+        self.assertEqual(newbox.ulst[1], uuid2)
+
 
 class TestJpxBoxes(unittest.TestCase):
     """Tests for JPX boxes."""