186 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



B*. Last sternal segment forms a thin, laminiform crest conspicuous in dorsal 

 view. Carapace with 3 lateral teeth, exclusive of orbital tooth. 

 C\ Ridge above posterior margin of carapace one unbroken curve. Outer 

 suborbital lobe with a margin slightly concave forward. 



deprcssa, p. 212. 

 C*. Ridge above posterior margin sinuous. Outer suborbital lobe a low 

 triangle. 



D\ Carapace wide, width 1.25-1.39 times length sica, p. 208. 



D^ Carapace narrow, width 1.14 times length angusta, p. 210. 



A*. Length of second ambulatory leg more than twice width of carapace. 

 B\ Outer suborbital lobe much less advanced than the ear-shaped prominence 

 formed by the pterygostomian region at its anterior angle. 

 C\ Outer suborbital lobe with margin concave forward. 



D'. Front quadridentate fragilis, p. 213, 



D*. Front bidentate gracilipes, p. 221. 



C*. Outer suborbital lobe in form of a triangle. 



D\ Outer suborbital lobe a low, obtuse triangle acutifrons, p. 223. 



D*. Outer suborbital lobe a produced, equilateral triangle. 



E*. One lateral tooth and one tubercle. Second leg 3^ times as long as 



width of carapace gracilis, p. 218. 



E^ Three lateral teeth. Second leg 3 times as long as width of 



carapace floridana, p. 220. 



B^ Outer suborbital lobe visible from above and almost as advanced as the 

 pterygostomian lobe. One larger lateral tooth between two smaller 

 lobes or denticles cursor, p. 215. 



CYMOPOLIA CRISTATIPES A. Milne Edwards. 



Cymopolia cristatipcs A. Milne Edwards, Bull. Mus. Comp. Zool., vol. 8, 

 1880, p. 28 (type-locality, Grenada, 92 fathoms; holotype, Cat. No. 

 6494, M.C.Z.). 



Palicus cristatipes Rathbun, Proc. Biol. Soc. Washington, vol. 11, 1897, 

 p. 93.— BouviEK, Bull. Soc. Philom. Paris, ser. 8, vol. 9, 1898, p. 65 [12].— 

 A. Milne Edwards and Bouvier, Mem. Mus. Comp. Zool., vol. 2T, 1902, 

 p, 42, pi. 7, figs. 1-5. 



Diagnosis. — Merus of ambulatory legs with three or four large teeth 

 on anterior border. Carapace vrith four lateral teeth besides orbital. 

 Suborbital margin oblique. 



Description. — Five lateral teeth, including orbital, diminishing in 

 size from anterior to posterior tooth; outer margin of orbital tooth 

 very convex, an interval betveeen that and next tooth, which is longi- 

 tudinally truncate on distal half of posterior margin; third and 

 fourth teeth subtriangular and subacute, kst tooth rudimentary. 

 Front divided by a deep emargination into two lobes, each of which 

 is divided in two by a shallow sinus. Middle supra-orbital lobe 

 broadly triangular, obtusely rounded at tip; outer lobe narrower, 

 subacute. Regions of carapace well marked, tuberculate, the tuber- 

 cles granulated; 12 tubercles in transverse row across cardiac and 

 branchial regions, of which two tubercles are cardiac. Six transverse 

 tubercles on posterior margin. 



