THE GEArSOID CBABS OP AMEBICA. 201 



lobe of suborbital margin; the latter lobe is oblique, concave, and 

 sliarply pointed at inner angle. 



Clielipeds of male unequal, right one large, manus bicristate above, 

 cuter surface granulate, lower margin convex; immovable finger 

 slightly deflexed, its length less than width of manus. 



Aferus of first ambulatory terminating in a large, blunt tooth, of 

 second and third armed on anterior margin with four or five curved, 

 more or less spiniform denticles; terminal tooth large, subacute; 

 posterior margin spinulous; upper surface covered with squamosa 

 granules; lobes on carpus small, but distinct; dactyli slender, poste- 

 rior margin concave. Posterior margin of propodus and proximal 

 half of dactylus clothed with shaggy hair in mature male. 



Crests on first two abdominal segments of male trilobate and sub- 

 parallel in dorsal vicv/, the first the wider; third segment with lobe 

 each side of middle, partially visible in dorsal view. Crest on fifth 

 sternal segment, or that between bases of third legs, about half as 

 wide as second abdominal segment, its posterior margin sinuous. 



Measurements. — ^lale (22301), greatest length of carapace 7.4, 

 width of same 9 mm. 



Range. — Bahamas; dredged, to a depth of 97 fathoms, 



material examined. — 



Southeast of Andros Island, Bahamas, in tongue of ocean: lat. 

 24° 02' 00" N.; long. 77° 12' 45" AV.; 97 fathoms; wh. Oz.; temp. 

 73.4° F.; Apr. 13, 188G; station 2G51, Albatross; 1 male holotype 

 (11391). 



Bahama Banks; May 18, 1893; State Univ. Iowa Exped. ; 4 males, 

 4 females (22301) ; 12 males, 18 females (^lus. S. U. I.). 



Off Green Cay, Bahamas; in oyster dredge; June 30, 1903; B. A. 

 Bean, Exped. Geogr. Soc. Baltimore; 1 male (310G0). 



CYMOPOLIA ISTHMIA (Rathbnn). 



riale 4S, flss. 3 and 4. 



Palictts isflwiins RATnnux, Proc. l>iol. Soc. Wnsliington, vol. 11, 1S97. p. 97 

 (type-locality, near Asi)in\vall; lat. 9° 27' N. ; long. 79' 54' W. ; 23 

 fathoms; Albatross, station 2145; liolotypc, Cat. No. 7753, U.S.N.M.). 



Diagnosis. — Lateral lobes of front obsolescent. Antero-lateral 

 teeth two, thick, far apart. Distal lobe of merus of ambulatory legs 

 acute; anterior lobes of carpus low. 



Description. — Carapace covered with single granules and small 

 tubercles, each composed of a few granules; granulation moderate. 

 Front little advanced, median sinus shallow, much Avider than long, 

 median teeth very small, tuberculiform; lateral lobes broad and very 

 shallow. Middle teeth of supraorbital margin^ triangular, obtuse, 

 inner margin straight, outer margin slightl}'^ convex; outer tooth 

 narrower, subtriangular, separated by a shallow sinus from the outer 



