202 BULLETIN 07, UNITED STATES NATIONAL MUSEUM. 



tooth of the orbit. This last is narrow, sharp-pointed, is directed 

 forward, its outer margin nearly straight except near tip. Two 

 antero-lateral teeth, small, thick, blunt, the first pointing forward, a 

 very small sinus between it and orbital tooth, outer margin convex ; 



the second tooth pointing out- 

 ward, its anterior margin 

 straight and almost trans- 

 verse, posterior margin convex. 

 FIG. 123. crjioroLiA ISTHMIA, OOTMXE OF Ridge above posterior margin 



FKOXT AND CUBITS OF FEMALE nOLOIVPB, comp()sed Q f sm ^ uilCqiial 



tubercles. Outer lobe of sub- 

 orbital margin transverse and slightly convex; inner lobe oblique, 

 largely covered by pter} T gostomian lobe in ventral view, its outer 

 portion a little convex, inner angle a small, sharp spine; pterygos- 

 tomian lobe more produced than orbital lobe, arcuate, margin a little 

 oblique, forming an obtuse angle at inner extremity. 



Chelipeds of male not known, of female very slender, subequal. 



Merus joints of ambulatory legs rather slender, very rough; one 

 or two of the more proximal spinules of the anterior margin are out- 

 standing; the distal lobe is triangular and acute, and in the first leg 

 has a long, sharp tip; anterior lobes of carpus inconspicuous; dactvii 

 long and narrow, their posterior margins proximally straight. 



Measurements. Immature female, holotype, greatest length of 

 carapace 5.8, width of same 7, length of second leg 13.7 mm. 



Material examined. Off Colon, Panama ; hit. 9 27' 00" N. ; long. 

 79 54' 00" W.; 25 fathoms; gn. M. brk. Sh.; Apr. 2, 1884; station 

 2145, Albatross; 1 female immature, holotype (7753). 



CYMOPOLIA DENTATA A. Milne Edwards. 



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

 p. 28 (part; not specimen from Santa Crux) (type-localities, Charlotte 

 Harbor, 50 fathoms, and Barbados, GO and 7G fathoms). 



PaUcit8 dcntatns A. MII.NE EDWARDS and BOUVIEH, Mom. Mus. Comp. Zool., 

 vol. 27, 1002, p. 53. pi. 9, figs. 15-17; pi. 10, figs. 1-G; pi. 11, figs. 1-3 

 (type-locality, Charlotte Harbor, 50 fathoms; holotype, Cat. No. G402, 

 M.C.Z.). In the synonymy, instead of " obesus" read "dcntatns," 



Diagnosis. First antero-lateral tooth distant from orbital tooth. 

 Supraorbital teeth triangular. Tubercles above posterior margin 

 linear. Outer suborbital lobe subtruncate. Distal lobe of merus of 

 ambulatories sharp ; lobes of carpus well developed. 



Description. Carapace covered with definite tubercles which are 

 ornamented with much finer granules than those elsewhere on tho 

 carapace. Front with four well-marked rounded lobes, median sinus 

 deeper and wider than lateral. Two supraorbital teeth triangular, 

 subacute, outermost sinus broader and a little shallower than the 

 others; outer orbital tooth long, triangular, acute, outer margin 





