50 NEW-YORK FAUNA — CRUSTACEA. 



{EXTRALIMITAL.) 



A. Imeatus. (Id. lb. p. 428.) Body oblong, not distinctly attenuated in front. The two lower antennae 

 shorter than the peduncle of the upper antennte, which latter are as long or longer than the body. 

 Peduncle of the caudal appendices cylindrical. Color, pale brown, with a double dorsal brown 

 line united at the tip of the tail, and with a brown line or two on each .side of the tail. Length, 

 0-25. Swamps in the forests of South-Carolina. AjiJanira? 



A. vulgaris? Lam. (Gould, op. cit. p. 337. Pl. 9, fig. 32 of this work.) Larger than the preceding, 

 according to Dr. Gould. Massachusetts. 



Genus Ligia, labricius. Body oval-oblong, with transverse segments. Two short bifid appendices at 



the extremity of the tail. Feet fourteen. The two outer antenuEe very conspicuous, with 



the terminal article many -jointed ; the inner antennae not distinct. Two sessile eyes. 



L. oceanica, Fab. (Desm. Consid. Pl. 6, fig. 13 of this work.) It is doubtful whether this species has 



been observed on our coast. Dr. Gould has noticed a species of this genus about the timbers of a 



decaying wharf, but which, he states, seems to be smaller than L. oceanica. 



Genus Philoscia, Latreille. Body oval, with transverse crustaceous segments, narrowed towards the 

 tail. Caudal styles four, subequal ; the lateral ones biarticulate. Eyes sessile. Two outer 

 antennje very distinct, of eight joints, naked at their base ; the inner antennse not distinct. 

 Terrestrial. 

 P. vitiata. (Say, loc cit. p. 429.) Head transversely oval ; eyes longitudinally oval ; antennae with 

 minute distant hairs ; first segment of the body rather longer than the others. Color : Head, body 

 and tail, with the margin and two broad vittEB, cinereous. Length, 0*2. Under stones and wood 

 in damp places. 

 P. spina sa. (Id. lb.) Body elongate-oval, armed with numerous spine-like tubercles above ; sixth and 

 seventh segments produced on each side behind, acute. Feet beneath, armed with short distant 

 setse. CoZor, brown. Length, 0*2. Under stones, etc. in damp places. Savannah, Georgia. 



