128 CALIFORNIA ACADEMY OF SCIENCES. 



entire, the three following segments with lateral plates and also small 

 marginal plates on one or both sides; penultimate joint devoid of lateral 

 plates; telson very small. 



Type.—L. Mandtii Brandt. 



Large crabs of rough aspect, confined to the Pacific 

 Coast of North America. 



In this genus the chelipeds and ambulatory legs, 

 when folded, fit neatly together, thus affording pro- 

 tection to the mouth-parts and under side of the body 

 in a very effective manner. 



Until the present time Lopholithodes Brandt has been 

 ranked as a synonym of Echinocerus White, the date of 

 Brandt's genus being given as 1849 and that of Whitens 

 as 1848. But while Vol. VII of the Bulletin of the St. 

 Petersburg Academy of Sciences bears the date 1849, the 

 number containing the description of Lopholithodes bears 

 the date of publication June 29, 1848. The part of the 

 Proceedings of the Zoological Society of London in 

 which White's description of Echinocerus appeared was 

 received from the printer November 14, 1848. The 

 name Lopholithodes, therefore, has priority. 



Lopholithodes Mandtii Brandt. 



Lopholithodes Mandtii Brandt, Bull, phys.-math. Acad. St. Petersb., 



. Tome VII, 184;^, p. 174. 

 Echinocerus cibarius Whitje, Proc. Zool. Soc. London, 1848, p. 47, Pis. II and 



III; Cat. of Crust, in Brit. Mus., p. 56. Stimpson, Journ. Bost. Soc. 



Nat. Hist. Vol. VI, 1857, p. 477; Proc. Acad. Nat. Sci. Phila., 1858, 



p. 231. Bate, in Lord's Nat. in Vancouver's Is., Vol. II, 1866, p. 276. 



Whiteaves, Can. Nat. (2), Vol. VIII, 1878, p. 471. Newcombe, Bull. 



Nat. Hist. Soc. Brit. Col., 1893, p. 26. Bouvier, Ann. Sci. Nat. (7), 



Tome XVIII, 1894, p. 184, PL XI, fig. 13, PI. XII, figs. 13 and 24; 



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

 Ctenorhinus setimanus Gibbons, Proc. Cal. Acad. Sci., Vol. I, 1855, p. 48. 

 Echinocerus senlimanus Stimpson, Proc. Cal. Acad. Sci., Vol. I, 1856, p. 88; 



Journ. Bost. Soc. Nat. Hist. Vol. VI, 1857, p. 477; Proc. Acad. Nat. 



Sci. Phila., 1858, p. 231. Bouvier, Ann. Sci. Nat. (7), Tome XVIII, 



1894, p. 184; Ihid. (8), Tome I, 1896, p. 27. 



