INVERTEBRATE FAUNA OF SOUTPI CAROLINA. 



293 



CLASS CRUSTACEA. 



[Articulate animals with two pairs of antennae or feelers, with jointed appendages 

 to some of the abdominal segments, with gills or vesicles for breathing air in water, 

 and a hard chitinous or subcalcareous covering to the body] 



ORDER DECAPODA. TEN-FOOTED CRUSTACEANS. 



Achelous spinimana DeHaan (N. C. 

 Alpheus minus Say. 



Cancer borealis Stm. (Atlantic coast). 



Cambarus immunis Hagen (N. C. ) 

 latimanus LeConte. 

 lecontei Hagen (N. C.) 

 pencillatus LeConte. 



Achelous gibbesii Stm. (N. C.) 



depressifrons Stm. (N. C.) 

 Alpheus heteroehelis Say (N- C.) 

 Araneus cribrarius Dana (N. C.) 

 Calappa marmorata Fabr. 

 Callianassa stimpsonii Smith (Atlantic coast). 

 Callichirus major Stm. 

 Callinectes hastatus Ordway [Sea-crab). 

 Cancer irroratus Say (Rock-crab). 

 Cambarus (Cray-fishes Fresh water.) 

 advena. 

 acutus. 



blandingii Harlan, 

 carolinus Erichson. 

 Carinus moenas Leach (Atlantic coast). 

 Clibanarius vittatus Stm. (N. C.) 

 *Crangon vulgaris Fabr. 

 Euceramus praelongus Stm. (N. C.) 

 Eurytium limossum Say. 

 Eupagurus (Hermit-crabs, living in abandoned shells of periwinkles, and other mol- 



lusks; the following three species are found) : 

 E. annulipes Stm. 

 longicarpus Stm. 

 pollicaris Stm. 

 Gebia afflnis Say. 

 Gelasimus. (Fiddler-crabs. Very abundant on the muddy banks of salt-marsh, 



streams, and hiding in holes in the ground). 

 G. minax LeConte (N. C.) 

 pugnax Smith, 

 pugillator (N. C.) 



* This is the common shrimp. It may be distinguished from its congener, the common prawn, 

 by the character of the rostrum or beak that projects Irom the head end of the back. This oeak 

 in the sTiriwp is short, with a single spine behind it. In the prawn it is long, upturned, and 

 toothed, having eight or nine teeth on the upper edge, and three or four on the lower. The name 

 of the common pj-awn. is Palaemonetes vulgaris. 



