426 A. E. Verrill — Decapod Crustacea of Bermuda. 



Two specimens of this species were taken in shallow water, in a 

 sandy cove of Castle Harbor, near Walsingham Bay, in March, 1901 

 (coll. A, H. Verrill, Yale Mus.). Cast-off shells were found else- 

 where, of larger size. Bahamas, six fathoms, and Porto Rico 

 (Rathbun). 



The Pacific form ranges from the Gulf of California to Panama. 

 Cape St. Lucas (Stimpson, coll. Xantus, Yale Mus.). Panama (Capt. 

 V. Dow, Yale Mus.). 



HAPALOCARCINIDEA, nov. 



The position of the family HapalocareinidcB in the sj^stem seems 

 to be decidedly doubtful. Stimpson thought his genus was most 

 nearly related to the Grapsoids. 



Heller placed his genus, Cryptochirus, next to the Pinnotlieridce. 

 Miss Rathbun (Crust. Haw. Is., 1906) })laced the family at the end 

 of the Oxystornata^ in proximity to the Dorippidm {Ethusa, etc.), 

 to some of which there is considerable resemblance. 



On the whole, it seems to me best to consider it as constituting a 

 peculiar superfamily group, in which the genera are highly spec- 

 ialized, so as to adapt them to the peculiar habit of living in cavities, 

 dens, or galls in the living parts of corals. 



Each species hitherto discovered appears to represent a distinct 

 genus, the genera differing among themselves widely in structure. 



In general form and habits they superficially resemble some of the 

 Anomiira, especially the females, which have a large, elongated abdo- 

 men, in the form of a pouch, with all the sutures distinct, but not 

 capable of curling up closely beneath the thorax, but there are no 

 appendages on the sixth segment. The abdomen of the males is 

 narrow and is applied closely to the sternum, as in ordinary Brachyura. 



The epistome is feebly developed ; the buccal area is large and 

 arched anteriorly. The lower border of the orbit is little developed. 

 The outer antennae are small and extraorbital. The antennules have 

 a large, prominent basal joint. The carapace is narrow and more or 

 less oblong, or semicylindrical, not much narrowed antei'iorly. The 

 front is usually subtruncate or emarginate without a central tooth. 



The outer maxillipeds are separated at base by a sternal lobe ; 

 they have, the ischium broad, often with a convex inner lobe ; the 

 raerus is small, seated well back, with the palpus articulated in a 

 notch of the inner edge ; the exognath is small. 



The chelipeds are feeble, often little if any larger than the next 

 legs ; the chehe are simple, with acute tips. The ambulatory legs 



