136 CALIFORNIA ACADEMY OF SCIENCES. 



the iipper surface flat, the inner margin spinulous and pubescent. Cheli- 

 peds spinulous, markedly unequal, and almost devoid of pubescence. 

 Merus of the larger cheliped oblong, trigonous, the upper surface with a 

 few transverse, granulated, or spinulous ruga? near the distal end; carpus 

 with the inner and outer sides flattened, the upper surface convex and 

 spinous, with a row of stout spines on the inner edge; hand oblong, 

 slightly wider than the carpus; inner side flattened; upper surface mod- 

 erately convex and covered with acute granulations; outer margin defined 

 by a row of spiny granules; fingers armed within with tuberculous teeth. 

 Merus of the smaller cheliped compressed; carpus with the inner side 

 flattened, the supero-lateral surface convex and covered with spiny gran- 

 ules; outer margin raised; upper surface convex; upper internal margin 

 armed with a row of strong spines, external to which is a similar row on 

 the .upper surface; hand oblong, flattened, and covered with sharp gran- 

 ules; outer margin raised; upper surface convex, the inner surface of the 

 palm and dactyl flattened; dactyl much longer than the palm, the upper 

 surface rounded. Ambulatory legs with the merus and propodus spiuulous 

 above, the dactyls long, curved, twisted, becoming thinner but not de- 

 creasing in width towards the tip, and pectinated below with slender, 

 closely set, parallel spinules. 



Concerning the color of this species Mr. Benedict says: " In alcoholic 

 specimens the general color above is a light purple with iridescent reflec- 

 tions; below light tinged with reddish. A red streak runs around the 

 prehensile edge of the thumbs and behind the dactyls to the inner margins 

 of the hands. There is an oblong patch of red on the outer distal mar- 

 gins and on the upper surface of the merus joints of the cheliped. The 

 lower outer surface of the carpal joints of ambulatory legs is pointed with 

 red. The propodal joints and dactyls are longitudinally streaked with 

 red. This species is very close to Be.rnha.rdus but is easily distinguished 

 by its broader and shorter left hand, by the wide dactyls of the ambula- 

 tory legs, by the acicula, and by its pearly iridescence." 



Alaska; off Washington in 31 to 38 fathoms (Bene- 

 dict). 



Pagurus aleuticus (Benedict). 



Eupagurus aleuticus BENEDICT, Proc. U. S. Nat. Mus., Vol. XV, 1892, p. 3. 



Closely allied to alaskensis. The teeth on the front are sharper, the 

 lateral ones acute. Eye-peduncles stouter and over one-half the length of 

 the anterior portion of the carapace. Antennal acicle similar to that of 

 alaskensis but broader at the base and not projecting so far beyond the tips 

 of the eye-peduncles. The chelipeds are very similar to those of alaskensis 

 but the spines are more prominent; a prominent line of spiny granulations 



