Abstract
The lakes and ponds of four counties in New Hampshire were found to contain three species of crayfish: Orconectes ririlis, O. limosus and O. immunis O. virilis is common and widespread through out a variety of habitats. O. immunis and O. limosus have limited distribution and are found in habitats different from those from which they are normally reported. Data on range, habitat, molting, and distribution are included.