212 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



CTMOPOLIA DEPRESSA (Rathbun). 



Cymopolia sica A. MILNE EDWARDS, Bull. Mus. Comp. Zool., vol. 8, 1SSO, p. 



29 (part: specimens from Blake stations 192, 272, 292, and some from 



132 and 293). 

 Palicus dcprcssiis RATHBUN, Proc. BIol. Soc. Washington, vol. 11, 1897, p. 



98 (type-locality, off Dominica, 138 fathoms, station 192, Blake; Cat 



No. 2701, M.C.Z.). A. MILNE EDWARDS and BOUVIEB, Mem. Mus. 



Comp. Zool., vol. 27, 1902, p. OS, pi. 11, figs. 4-8. 



Diagnosis. Carapace depressed; from one-fourth to one-third 

 wider than long; a continuous, nontuberculous ridge above posterior 



Fio. 128. CYMoror.iA DEPKESSA, YOUXO FEMALE ((1503, M. C. Z.), AFTER A. MILXB 

 EDWARDS AND DocriEi:. a, LEFT OCCLO-AXTEXXAL REGIOX, VEXTUAL VIEW, X. 15; 



li t CAKAl'ACE, 1 DOUSAL VIEW, X 8J J C, MEKCS AXD CAIM'US OF SECOXD RIGHT LEG, UITEB 

 SIDE, X 11; d, EXDOGXATU OF LEFT OUIElt UAXlLLll'ED, X 18 J 6, I'OSTEUlOlt BOilUEU Of 

 CABAPACE, EXLAUUED. 



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

 sternum showing prominent laminae behind carapace in dorsal view. 

 Inner suborbital lobe trilobed; inner sinus small. Tooth on mcrus 

 of ambulatories atrophied. 



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

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

 above the posterior margin a continuous ridge instead of a sinuous 

 line of tubercles; inner suborbital fissure similar to that of angusta, 

 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, b has become proportionally wider than the original. 



