THE CRUSTACEA OF NEW JERSEY. 389 



contribute still further in its concealment. The males have long- 

 stout claws, and are larger than the females, sometimes reaching 

 a foot or over across their extended legs. The females have 

 much shorter and smaller legs, and rather weak claws. 



I have many examples from Cape May, Cape May Point, 

 Great Egg Harbor, and Beesley's Point. Many have been ex- 

 amined at Barnegat Inlet, Point Pleasant, Great Bay, Atlantic 

 City, Ocean City, Sea Isle City, Anglesea and Cape May, besides 

 numerous other localities along the coast. Near Barnegat Pier, 

 on August 20th, 1903, they were very abundant, and many were 

 taken while angling. Besides them numbers of the following 

 fishes were also -angled: PoMiolohus niediocris, Pomatomus 

 saltatrix, Roccits lincatus, Centropristis striatus, Cynoscion re- 

 galis and Lciostouins xanthurus. Mr. W. T. Davis says it is oc- 

 casionally found washed ashore on the south side of Staten 

 Island, N. Y. 



Tribe Leucosoidea. 



Carapace with antero-lateral edges arcuate or orbiculate, some- 

 times subglobose or more or less oblong with subparallel edges. 

 Epistome much reduced. Buccal frame more or less triangular, 

 produced and narrowed forward, with edges anteriorly converg- 

 ent. Branchiae in pairs of six to nine. Efferent channels open at 

 middle of endostome, latter produced forwards. Afferent chan- 

 nels open either behind pterygostomian regions and in front of 

 chelipeds, or at antero-lateral angles of palate. First antennae 

 folded longitudinally or obliquely. Genital organs of male ex- 

 serted, either from bases of fifth pair of legs or from surface of 

 sternal plastron. 



In this group are several families, and these are greatly diverse 

 in general appearance. 



Family CALAPPID^. 



The Box Crobs. 



Afferent channels to branchiae open behind pterygostomian 

 regions and in front of chelipeds. Antennae small. Outer max- 



