130 CALIFORNIA ACADEMY OF SCIENCES. 



The abdomen of the male is subtriangular behind the basal segment; 

 that of the female rounded at the sides and tip and bent to one aide. 

 Length, 200 mm.; breadth, 245 mm.; length of larger cheliped, 202 mm.; 

 length of first ambulatory leg, 195 mm. Some specimens are widest 

 between the tubercles at the postero-lateral angles, while others are widest 

 between the tips of the last spines on the antero-lateral margin. 



Sitka (Brandt); Vancouver's Is. (Bate); near the 

 mouth of the Columbia River (White); Farallon Is- 

 lands! Monterey! 



Lopholithodes foraminatus St. 



Echinocerus foraminatus STIMPSON, Ann. N. Y. Lye. Nat. Hist., Vol. VII, 

 1860, p. 79. NEWCOMBE, Bull. Nat. Hist. Soc. Brit. Col., 1893, p. 27, 

 PI. III. BOUVIEK, Ann. Sci. Nat. (7), Tome XVIII, 1894, p. 184; 

 Ibid. (8), Tome I, 1896, p. 27. 



Carapace depressed, wider than long, the tubercles on the upper surface 

 mostly small and subconical; median region elevated, furnished with a 

 conical tubercle near the middle, and a group of smaller tubercles near the 

 posterior end; cardiac region with a few subconical tubercles; an irregular 

 line of tubercles extending from the median area to the postero-lateral 

 angles of the carapace; the greater portion of the upper surface is covered 

 with depressed, more or less papillose elevations. A smooth spot on either 

 side of the median area as in Mandtli. Kostrum rather short, with the 

 median spine much as in Mandtii and a cluster of spiny tubercles above 

 the base. External to the orbits there are three spines in a nearly trans- 

 verse line, behind which the antero-lateral margin is at first concave, then 

 strongly convex; the spines on the convex portion of the margin are large 

 and subconical; behind the convex part the margin is concave and devoid 

 of spines; posterior margin of the carapace arcuated and studded with 

 conical tubercles. Eye-stalks spinulous. Antennal acicle with strong 

 spines on the margins but almost devoid of spines on the upper surface. 

 Chelipeds very spiny; merus with the antero-internal angle produced and 

 with a flattened, nearly semicircular area at the supero-distal angle; carpus 

 with the inner lobe prominent, and with the outer edge excavated, form- 

 ing a smooth, deep, rounded sinus which, when approximated to the 

 shallower corresponding sinus on the anterior edge of the carpus of the 

 first pair of ambulatory legs, forms a smooth, nearly circular hole; hands 

 quite similar to those of Mandtii. Ambulatory legs and abdomen much as 

 in the preceding species. 



