326 REPO'RT OF NEW JERSEY STATE MUSEUM. 



similar. Lower posterior rostral edge entire. Mandible mod- 

 erate, strong. Mouth moderate. First maxillae small, short, 

 broad, without exopodite. Second maxillae similar, a little larger 

 than first, with well developed exopodite. Pereion nearly cylin- 

 drical, short. First maxillipeds short, compressed, with terminal 

 joint as rather broad compressed lamina folding- over to com- 

 pletely obscure maxillae. Two exopodites to each of first maxil- 

 lipeds. Second maxillipeds pediform, long, slender, each with 

 long slender exopodite. All exopodites on maxillae and maxilli- 

 peds similarly tapering into flexuous filamentous ends. First' 

 peraeopods not enlarged, slender, pediform, chelate, though little 

 less developed than second pair. Latter a little longer, though 

 not conspicuously enlarged, also chelate and pediform. Third, 

 fourth and fifth peraeopods subequal, similar to one another, 

 slender, with simple dactyli. Pleon capable of curving evenly, 

 with second and third shields largest, though sixth about equally 

 long and narrowly constricted. Five pairs of pleopods, com- 

 pressed, and each ending as two subequal flagella. Telson 

 slender, acuminate, ending in several short bristles. External 

 elements of rhipidura each side as two similarly broad expanded 

 flagella, outer little long-er, retractile to fold in vertical axis of 

 body. Color in life pale brownish, mostly glassy or transparent 

 in appearance. In alcohol or other preservatives they turn pink 

 or reddish. Length 45 mm. 



Remarks. — The prawii ranges all along the coast of North 

 America, southward to Florida at least. It frequents muddy 

 shores and brackish water. It is also abundant in the eel-grass, 

 and is preeminently an inhabitant of weedy estuaries. Though 

 living along the coast on sandy shores it also ranges well up the 

 coastal rivers into fresh water. It seems to be most abundant 

 in the eel-grass, occurring sometimes in myriads. In small 

 ditches and ponds it is often very abundant. Its value lies chiefly 

 in its affording an abundant food supply to most larger fishes. 



On April 30th, 1904, it was found abundant in the ditches of 

 Cold Spring Inlet, in Cape May County, associated with Fimdii- 

 lus niajalis, F. hcteroclitus macrolepidotus, F. diaphanus and 

 Mcnidia vienidia notata. 



