THE CRUSTACEA OF NEW JERSEY. ^27, 



Cyprinodon varicgatns, Liicanm parva, and Menidia meiiidia 

 no tat a. 



Mr. W. Bl Davis and the writer found it abundant at Great 

 Bay, in ditches, and along- the shores, often in vegetation. It 

 was less common than Falcoiionetes z'ulgaris, with which asso- 

 ciated, besides A\nguilla chrisypa, Fimdndiis heteroclitiis macrole- 

 pidotns, Fundulus lucioc, Tylosuriis fnarinus, Apeltes quadractis, 

 Syngnathus fitscus. Menidia menidia notata, Pomatomus salta^ 

 trix, Centropristis striatus, Tantoga onitis, Opsanns tan and 

 P send pi cur once tcs anicrican its. 



It has been found in Staten Island, N. Y.. by my friend Mr. 

 \\'. T. Davis. 



Alliance Pal^monoida. 



Mandibles deeply cleft into well calcified incisor and molar 

 branches, and usually have stout incurved palp. Exopodites of 

 first maxillipeds end in flagellum. Dactylus of second maxilli- 

 peds "complemental" of propodite, as in Pandaloida, Cran- 

 gonoida, etc. None of thoracic legs have exopodites, and of 

 first two pairs one remarkably massive, both being chelate. 



Key to the Families. 



ci. Carpus simple. pal^monid.e. 



aa. Carpus of many articles. hippolytid.s. 



Family PAL^MONIDl^. 



Rostrum well developed. Antennular scale present. Two 

 long antennular flagella, outer split into two unequal filaments. 

 Antennal scale of good breadth. Mandible deeply cleft into 

 incisor and molar processes and with stout two or three-jointed 

 palp. Coxa and basis of first maxilLx and first maxillipeds well 

 developed, but not coxa of second maxillse. Terminal joint of 

 second maxillipeds lies obliquely along distal part of inner 

 border of propodite, as if complemental piece of proix)dite. Ex- 

 ternal maxillipeds pedifonn, third joint (ischium-merus) curved 

 outwards a little. Exopodites of all three pairs of maxillipeds 

 flagelliform and lax. First and second pairs of legs chelate, first 



