150 



Cambams virilis Hagen. Is verj^ common and widely distributed in the 

 northern part of the state. I have also found it at Irvington. 



Pahemon ohionis. Smith. The river shrimp has been taken in large 

 numbers in the Ohio at Lawrenceburg. It will probably be found to occur 

 in the lower Wabash and possibly some of the other large streams in the 

 south of the state. 



Allorchestes dentata Smith. This small crustacean was taken on one oc- 

 casion from a small pool along Fall creek, north of Indianapolis. It has 

 also been observed by Prof. S. A. Forbes in northeastern Indiana. 



Crangom/x gracilis Smith, ^'ery common in stagnant water in central 

 Indiana. I have never observed it in the streams. Early spring is the 

 beet collecting time for this crustacean, as it then attains its largest size. 



Crangonyx packardi Smith. I have not yet collected this species, but it 

 is said to be common in the southern portion of the state. 



Crangoni/x mncronatus Forbes. This interesting species, I think, will 

 be fourid to occur over a large portion of Indiana. I have found it under 

 logs in a swamp near Irvington, have taken it from at least one well in the 

 vicinity, and have observed and collected it in nearly every cave in Mon- 

 roe, Lawrence, Crawford and Harrison counties. 



Mancasellxs tenax Harper. An exceedingly large and abundant species 

 which may be found in early spring in the water courses. I have often ob- 

 served it in stagnant water, but in running water, as at the mouth of a 

 tile drain, they may be collected by the hundreds. 



Ascllus communis Say. This species appears to take the place of the 

 preceding species in the ponds. I have rarely observed it in running 

 water, but in early spring it is very common in the ponds about Indianapolis. 



Asellus stygins Packard. This interesting blind AseUus I have found in 

 two wells, three or four miles north of Irvington. It is also very common 

 in the caves, but does not appear to grow to so large a size as those taken 

 from the wells. 



Scyphacella putea W. P. Hay. This very curious and remarkable crus- 

 tacean is as yet undescribed, but is here included. The type specimens 

 were obtained from a well in Irvington. Soon after the specimens were 

 taken the well was cleaned, and no crustaceans have been observed since. 

 Its nearest relative is Scypliacella arenicola, a salt water crustacean. 



Branchipus rernalis Verrill, In the central portion of the state, about 

 Irvington, this beautiful crustacean is very abundant. In one sweep of the 



