32 BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



upper third of outer surface uneven; lower margins sparsely tubercu- 

 late or granulate. Outer surface of carpus uneven; two blunt teeth 

 on distal margin, and a blunt spinule at inner angle. Proximal two- 

 thirds of upper margin of palm tuberculated, the line continued part 

 way on the proximal margin. First and second pairs of legs very 

 broad; carpus with a smooth carina on upper margin and a sinuous 

 one on middle of outer surface, terminating in a sharp tooth; on lower 

 margin of dactylus a row of four or five black spines diminishing in 

 size toward the propodus. Third leg stout, merus two and one- 

 half times as long as wide; that of fourth leg narrower, about three 

 times as long as wide; both legs have a slender articulating spine 

 forming a chela with the dactyl; on the last leg there are in addition 

 two shorter and extremely slender movable spines, one above the 

 convex base of the dactyl, the other longer and situated inside of and 

 parallel to the smaller chelate spine. 



Color. — Densely covered with dark brown or blacldsh stiff hairs, 

 only the tips of the dactylus being naked ; these are light red. Beneath 

 the hairs the surface is whitish. (Verrill.) Carapace wine purple 

 like some of the sponges in the same haul; exposed fingers of chelae 

 scarlet-vermilion, with white tips. (W. L. Schmitt.) 



Habit. — Dromia always covers its back with a concave fragment of 

 some living sponge. (Verrill.) 



Measurements. — Male (2197), length of carapace 89, width 

 115.4 mm. 



Range. — Florida to Brazil; Bermuda; shallow w^ater to 15 fathoms; 

 100-200 fathoms (Verrill). 



Material examined. — See table 7, page 28. 



Genus DROMIDIA Stimpson 



Dromidia Stimpson, Proc. Acad. Nat. Sci. Philadelphia, 1858, p. 225 [63] (type, 

 D. hirsutissima Lamarck); Smithsonian Misc. Coll., vol. 49, p. 170,1907. 



Carapace convex and pilose, the hair being often of considerable 

 length; front narrow, hepatic regions more or less concave, or exca- 

 vated anteriorly. The palate is marked by a strong ridge on either 

 side. Sternal sulci in female approximated at their extreim'ties in 

 either a single or more or less bifm-cated tuberculiform projection, 

 situated between the bases of the chelipeds. Atlantic and Pacific 

 coasts of North and South America, Hawaiian Islands, Australia, 

 Asia, and South Africa. 



KEY TO THE SPECIES OF THE GENUS DROMIDIA 



A'. Carapace longer than broad, lateral margins of posterior two- 

 thirds subparallel antillensis (p. 33) 



A^. Carapace broader than long, lateral margins of posterior two- 

 thirds converging posteriorly larraburei (p. 35) 



