122 CALIFORNIA ACADEMY OF SCIENCES. 



Phyllolithodes papillosus Brandt. 



Phyllolithodes papillosus Bkandt, Bull, phys.-malli. Acad. St. Petersb., 

 Tome VII, 1849, p. 175. Stimpson, Journ. Bost. Soc. Nat. Hist., Vol. 

 VI, 1857, p. 476; Proc. Acad. Nat. Sci. Phila., 1858, p. 231; Ann. 

 N. Y. Lye. Nat. Hist., Vol. VII, 1862, p. 80; Whiteaves, Can. Nat. (2), 

 Vol. VIII, 1878, p. 471. BouviER, Ann. Sci. Nat. (7), Tome XVIII, 

 1895, p. 174, PI XI, fig. 12; PI. XII, figs. 14 and 25; PI. XIII, fig. 1; 

 Ihid. (8), ToDie I, 1896, p. 22. 



Petalocerus hellianus White, Proc. Zool. Soc. London, 1856, p. 134, PI. 

 XLII; Ann. Nat. Hist. (2), Vol. XV, 1855, p. 307. Bate, Proc. Zool. 

 Soc. London, 1864; in Lord's Nat. in Vancouver's Is., Vol. II, 1866, 

 p. 275. 



Carapace triangular and covered w^ith strawberry-like tubercles which 

 form a smaller elevated triangle whose sides are parallel to the sides of the 

 carapace; a pair of large, deep pits on the dorsal surface. Eostrum prom- 

 inent, divided into two, blunt, diverging, obliquely compressed horns, 

 and bearing on the upper side a high, bilobed crest. On the under side 

 of the rostrum there is a spiny process directed forwards and curving 

 slightly upwards, above the base of which is a pair of much smaller spines. 

 Antero -lateral margin constricted behind the hepatic regions. A subacute 

 spine at the outer orbital angle which is directed forwards, downwards, 

 and slightly inward; two spines of unequal length just external to the 

 postorbital; behind the constriction, the antero-lateral margin is armed 

 with three, long, slender, rather blunt spines which exceed the anterior 

 ones in length. The postero-lateral angles of the carapace are produced 

 outwards into flattened expansions which bear three blunt projections, 

 the anterior one of which is elongated, slightly compressed, pointing 

 upwards, outwards and forwards; the posterior projection is short and 

 rounded. Posterior margin of the carapace transverse and furnished with 

 a row of rounded tubercles. Antennal acicle furnished with three smooth, 

 flattened, subequal, spatulate processes. The chelipeds are unequal and 

 thickly covered with long, slender, more or less compressed, blunt spines, 

 which are largest on the merus and carpus and gradually diminish in size 

 toward the tip and lower margin of the hand; the two hands are similar; 

 fingers stout, corneous-tipped, and excavated, the outer sides furnished 

 with numerous tufts of set». Ambulatory legs subequal, subcylindrical, 

 and thickly covered with long spines similar to those of the chelipeds. 

 Basal abdominal segment nearly vertical and deeply pitted on either side 

 like the following segments. 



Length of carapace from tip of the rostral horn, 52 mm.; width between 

 tips of postero-lateral horns, 51 mm, 



Kadiak Is . (Brandt) ; Vancouver's Is. (Bate, Whiteaves) ; 

 Monterey (White); "California", several specimens! 



