212 BULLETIN 07, UNITED STATES NATIONAL MUSEUM. 



CYMOPOLIA DEPRESSA (Rathbun). 



Cymopolia sica A. Milne Edwards, Bull. JIus. Coinp. Zoiil., vol. 8, ISSO, p. 



29 (part: specimeus from Dlakc statious 192, 272, 292, and some from 



132 and 293). 

 Palicus dcprcssus Rathrux, Proc. Biol. Soc. Washington, vol. 11, 1S97, p. 



98 (type-locality, ofE Dominica, 1.38 fathoms, station 192, Blithe; Cat 



No. 2701, M.C.7j.). — A. ^Iir.XK Edwards and liouviEU, Mem. Mas. 



Comp. Zoiil., vol. 27, 1902, p. 58, pi. 11, Ogs. 4-8. 



Diagnosis. — Carapace depressed; from one-fonrtli to one-third 

 wider than long ; a continuous, nontuberculous ridge above posterior 



Fio. 12S. — CvMoroi.iA DErnEssA, roDxo femat.e (C505, JI. C. Z.), after A. Milnb 

 EowAnos AXD ISotviEit. a. Left ocui.o-axtexxai, regiox, vextral view. X 15; 



h, CAUAI'ACE,' DOKSAL VIEW, X S\', C, MEItUS AXD CAISI'L'S OF SECOXD UinilT LEG, UI'rEB 

 SIDE, X 11 ; c/, EXOOGXATU OF LEFT OUTEU MAXlLLll'ED, X IS ; C, rOSXEUlOU ISOUDEU 0» 

 CAUAPACE, EXLAUGED. 



margin; three thin, subequal, antero-lateral teeth. Abdomen and 

 sternum showing prominent himinac behind carapace in dorsal view. 

 Inner suborbital lobe trilobcd; inner sinus small. Tooth on merus 

 of ambulatories atrophied. 



Description. — Distinguished from C. sica and C. angusta as fol- 

 lows: Carapace about as wide as sica, more depressed tlian either; 

 above the posterior margin a continuous ridge instead of a sinuous 

 line of tubercles; inner suborbital fissure simihir to that of ajigusta^ 

 the outer lobe appearing more transversely truncate, median portion 

 of second abdominal plate less prominent than in the other species; 

 ischium of maxilliped wide as in angusta, but widening more to 

 ischium of maxilliped wide as in angusta, but widening more to- 



* In the process of reproduction, 6 has become proportionally wider than the orl;;tnaL 



