288 BULLETIN 120, UNITED STATES NATIONAL MUSEUM 



bifurcate for half its length, horns tapering, acute, widely divergent. 

 A short but well marked supraocular spine. Basal antennal article 

 much widened, especially posteriorly where it forms a strong lobe on 

 the margin; tooth at antero-external angle a little more advanced 

 than that at antero-internal angle. A small lobe 

 behind outer margin of basal article and in trans- 

 verse line with antennal glands. Antero-internal 

 outline of merus of maxilliped oblique, slightly 

 notched. Chelipeds of largest male examined, 

 which may not have reached its full development, 

 just as long as next leg, palm slightly narrowed dis- 

 tally, gape of fingers slight. Abdomen of male 

 widened a little at end of sixth segment. 



Measurements. — Male (48805), length of carapace 

 on median line to posterior spine 17.3, length to tip 

 of horn 20.2, width of carapace exclusive of spines 

 10.6 mm. Largest specimen, a female (48799), 



Fig. 95.— N O T O LO P A s i , i /. i • i • - . • 



LAMELLATus, FEMALE Icugth of carapace on median Ime to posterior 



(48799), MAXILLIPED, spine 20.7, length to tip of horn 25, width of 

 carapace exclusive of spines 14 mm. 



Range. — From Manzanillo, Mexico, to Panama. Off Beaufort,. 

 North Carolina. 



Material examined. — 



Corinto, Nicaragua; J. A. McNiel; 1 female (4791, M. C. Z.). 



Carbon Island, Corinto, Nicaragua; J. A. McNiel; 1 immature 

 female (4792, M. C. Z.). 



Puntarenas, Costa Rica; P. Biolley, collector; gift of J. F. Tristan; 

 4 males, 1 female, all small (49087). 



Taboga Island, Panama; June, 1914; J. Zetek; 1 male (48805). 



Panama City; Oct. 5, 1914; J. Zetek; 1 ovigerous female (48799). 



Panama; Hassler Exped.; 2 males, 2 females (1 with Sacculina) 

 (2042, M. C. Z.). 



Off Beaufort, North Carolina; Fish Hawk; 1 ovigerous female 

 (52758). 



NOTOLOPAS BRASILIENSIS Miers 



Plate 237; plate 238, figs. 2-4 

 Notolopas brasiliensis Miers, Challenger Rept., Zool., vol. 17, 1886, p. 64,. 



pi. 8, figs. 1-16 (type-locality, Bahia, 7 to 20 fathoms; type in Brit. 



Mus.). 

 Hyastenus caribbaeus Rathbun, Proc. U. S. Nat. Mus., vol. 16, 1893,. 



p. 85, pi. 6, fig. 2 (type-locality, Sabanilla, Colombia; holotype, Cat. 



No. 16315, U.S.N.M.). 



Diagnosis. — The carina around the posterior end of the carapace 

 above the margin is low, blunt and ill-defined. A tooth or small,, 

 pointed lobe on outer margin of basal antennal article. Antero- 

 internal emargination of merus of maxilliped almost a right angle. 



