diff --git a/pybis/src/python/pybis/things.py b/pybis/src/python/pybis/things.py
index 3c339fa7183971aca54c580d77be728ff2919ab1..776f81cfe025559998725126b75b30317c192bf2 100644
--- a/pybis/src/python/pybis/things.py
+++ b/pybis/src/python/pybis/things.py
@@ -23,12 +23,14 @@ class Things():
     """
 
     def __init__(self, openbis_obj, entity, df, 
-        identifier_name='code', additional_identifier=None):
+        identifier_name='code', additional_identifier=None, start_with=None, count=None):
         self.openbis = openbis_obj
         self.entity = entity
         self.df = df
         self.identifier_name = identifier_name
         self.additional_identifier = additional_identifier
+        self.start_with = start_with
+        self.count = count
 
     def __repr__(self):
         return tabulate(self.df, headers=list(self.df))