4 PROCEEDINGS OF THE NATIONAL MUSEUM vol.64. 



Description. — Compared to C. opilio ^ the carapace is wider owing 

 to the greater depression of the branchial regions. The whole animal 

 is rougher; the spines in the roAv leading from the pterygostomian 

 region backward to the branchial region become suddenly larger, the 

 last three or four spines being of considerable size; several other 

 prominences of the antero-lateral regions are spinous instead of 

 tuberculous. Lateral margin of carapace deeply scalloped. Outer 

 orbital tooth curved more strongly inward, rostral teeth narrower^ 

 interspace wider. Spines of legs longer. 



CHIONOECETES ANGULATUS, new species. 



Holotype. — Male, Cat. No. 19303, United States National Museum. 

 South of Pribilof Islands, Bering Sea, 1,401 fathoms, station 3604,^ 

 Albatross. 



Measurements. — Male holotype, length of carapace on median line 

 73 mm., width exclusive of spines 78.6 mm. 



Description. — Differs from C. tanneri^ in the two dorsal rows 

 of spines and tubercles on the branchial region meeting at the 

 outer margin in an acute angle; interbranchial space not so deeply 

 depressed; rostral teeth as wide as, or wider than, the length of 

 their inner margin. 



HYAS COARCTATUS URSINUS, new subspecies. 



Holotype. — Female, ovigerous. Cat. No. 46493, United States Na- 

 tional Museum. Sea of Japan, latitude 45° 24' 00" north, longitude 

 140° 49' 10'' east, 325 fathoms, station 4992, Albatross. 



Measurements. — Female holotype, length of carapace to end of 

 rostrum 60.6 mm., width 41.8 mm. 



Descriptio7i. — Much more hairy than typical H. coarctatus^ 

 especially the legs and the ventral surface of the body; legs con- 

 cealed by a dense vesicular pubescence and longer, slenderer hairs 

 which are most abundant on the lower surface of the merus. 

 Carapace broad behind as in coarctatus alutaceus ^ but relatively 

 narrower across the hepatic regions. Rostrum elongate, leaning 

 toward typical coarctatus. 



LISSA BRASILIENSIS. new species. 



Holotype. — Female, Cat. No. 2055, Museum of Comparative 

 Zoology. Off Cape Frio, Brazil, 35 fathoms, Hassler Expedition. 



Measurements. — Female holotype, length of carapace 16.6 mm. 

 width 15 mm. 



»0. Fabiicius, K. Danske Vid. Selsk. Skr., Nye Sanil., vol. 3, 1788, p. 182, plate. 

 « Rathbun, Pioc. U. S. Nat. Mus., vol. 16, 1893, p. 76, pi. 4, figs. 1-4. 

 '' Leach, Trans. Linn. Soc. London, vol. 11, 181o, p. 329. 



' Brandt in Middendorffl's Reise in den Aussersteii Norden und Osten Sibiriens, vol. 2, 

 Zool., pt. 1, 1851, p. 79. 



