392 REPORT OF NEW JERSEY STATE MUSEUM. 



on upper edge of propodus with eight serrae, subequal, and upper- 

 most somewhat crowded. Inner face of pahii smooth, and lower 

 edge with three series of fine bead-hke tubercles, all small and 

 close set. Transverse wing-like expansion on merus with three 

 broad serrre. Walking legs with simple dactyls, and not hairy. 

 Fourth and fifth abdominal segments entire. Color (in alcohol) 

 largely dull brownish, apparently not variegated. Lower regions 

 slightly paler than upper. Length of carapace 22mm., and width 

 28 mm. 



Remarks. — ^The box crab is found chiefly along the southern 

 shores of the United States, from North Carolina to the shores 

 of northern South America. It has been found as far north as 

 Massachusetts, where, however, it is doubtless a straggler from 

 the south. Previously to the capture of the above-described ex- 

 ample, which though only a young one, the species had never 

 before been taken in New Jersey. This specimen was taken sev- 

 eral years ago at Corson's Inlet, by my friend. Dr. Richard J. 

 Phillips. I may also state that Mr. H. Walker Hand, who has 

 examined the specimen in question, also tells me that he has seen 

 another some years ago at Cape May Point. It is evidently rare 

 within the limits of the State, having never been mentioned by 

 any of the early w-riters. The species obtains a length of 90 

 mm. measured lengthwise over carapace. 



Tribe Cancroidka. 

 The Edible Crabs. 



Carapace usually broader than long, regularly arched in front, 

 not rostrate. Epistome short and transverse, outer maxillipeds 

 with fifth joint articulated at inner front angle of fourth. 

 Branchiae nine, efferent channels opening at sides of endostome 

 or palate. Genital organs of male inserted at bases of last pair 

 of trunk legs. 



This group contains all the large edible crabs of the United 

 State, many of which, like the blue crab {Callinectes) of the 



