48 MR. E. J. MIERS ON CRUSTACEA FROM [Jan. 14, 



nearly to the distal end of the rostrum. There are no tubercles on 

 the lateral expansions of the carapace ; but the lateral margins are 

 obscurely toothed, as in C. typicus. The anterior legs have the 

 palms tuberculated externally ; and the ambulatory legs are cristate, 

 as in that species. Length to end of rostrum 4 1 lines, breadth 6 

 lines. 



North Japan. 



From Cryptolithodes typicus, Brandt, from California, this species 

 differs in the less-deflexed rostrum, the absence of tubercles on the 

 lateral lobes of the carapace, aud the shape of these expansions, 

 which are broadly rounded, with the lateral margins regularly arcu- 

 ated, whereas in C. typicus the latero-anterior and latero-posterior 

 margins form a more or less distinct angle one with another. It is 

 probable that this character will always suffice to differentiate the 

 species, even if the others should fail in older individuals. ^ C. sit- 

 chensis, Brandt, from Sitka, has, according to Stimpson, a tridentate 

 rostrum and smooth hands. 



C. alta-fissura, Spence Bate, from Vancouver Island, of which 

 there is a specimen in the Museum, is distinguished by the broad, 

 flat, and rectangular rostrum, and the deep notch in the carapace iu 

 which the eyes are situated'. 



Paguridea. 



EuPAGURUs CAViMANUS, sp. n. (Plate III. fig. I.) 



Carapace shghtly puiictulated on the sides in front of the bran- 

 chial regions, and with a small acute median frontal lobe. Eye- 

 peduncles subcylindrical, scarcely shorter than the peduncles of 

 the antennae, not constricted in the middle, their basal scales 

 entire, and concave above. Antennules with the peduncles 

 rather longer than the eyes. Antennae with their slender basal 

 acicles a little shorter than the peduncles. Anterior legs very un- 

 equal ; larger (right) leg with the arm very short, trigonous, concave 

 on its outer surface, and with a few spinules on its distal upper mar- 

 gin ; wrist about as long as broad, and much broadest at its distal 

 extremity, convex and faintly punctulated on its outer surface, its 

 inner surface smooth and concave, and its upper and lower margins 

 distally produced into thin crests, the ujjper of which is obscurely 

 serrated ; hand with the upper and lower margins parallel and sub- 

 cristiform, slightly convex, and nearly smooth on its outer surface, 

 mobile finger not cristate above, and about as long as the upper 

 margin of the palm. Smaller leg very slender, wrist externally 

 granulated and serrated above ; palm subovate, smooth, and concave 

 on its outer surface. Legs of second and third pairs slender, nearly 

 sm.ooth, the terminal joints rather longer than the preceding, and 

 with short stiff hairs on their upper and lower margins. 



' There is also a dried specimen in the Museum, from Vancouver Island, 

 ■which closely resembles C. tyjricvs, but is distinguished by the form of the ros- 

 trum, which is obtusely triangular, and does not project beyond the anterior 

 margin of the carapace. This I propose to designate C. hrevifroiis. 



