MB. E. J. MIEES'S REVISION OP THE HIPPIDEA. 325 



Hippa talpoides, Dana, Crust, in U.S. Expl. Exp. xiii. 1, p. 409, pi. xxv. 



fig. 10 (1852) ; Proc. Ac. Nat. Sci. Phil. vii. p. 175 (1854), nee Say. 

 Hippa analoga, Stimpson, Proc. Boston, Soc. Nat. Hist. vi. p. 85 



(1856-59); Journ. Bost. Soc, Nat. Hist. vi. p. 486 (1857). 



This species is nearly allied to S. emerita ; but the carapace is 

 generally more rugose anteriorly, and the posterior margin is 

 straight. The median frontal lohe is hroader, less acute, and not sepa- 

 rated so widely from tlie lateral lobes, which are acute but far less 

 prominent. The median spine of the second joint of the antennae 

 is proportionally not so long, and is directed slightly inward (not 

 outward, as in S. emerita). The lobe of the antero-internal 

 angle of the third joint of the outer maxillipedes, in the speci- 

 mens I have examined, is broader, more rounded, and less pro- 

 minent. Length of the carapace of the largest specimen about 

 1 inch 2 lines. 



Hah. Chili, Valparaiso (M.-Udw. ^ Lucas, Dana) ; Chiloe, 

 Ancud, Luco Bay, and San Vincente (^Cunningham, Coll. Brit. 

 Mus.) ; Mexico (Coll. Brit. Mus.) ; Mazatlan (Saussure) ; Cali- 

 fornia, Tomales Bay {Stimpson) ; San Erancisco and Monterey 

 '•{Stimpson, Coll. Brit. Mus.). 



There are in the British-Museum collection two specimens 

 obtained by purchase, and labelled as having been obtained, with 

 a number of other Crustacea, from " New Zealand and New 

 Holland." They are of small size ; carapace about 7 lines in 

 length, and appear to belong to Hippa analoga, the form of the 

 frontal lobes and second joint of the antennae being the same. 

 There may be some mistake in regard to their habitat. 



Hippa Asiatic a. PI. V. fig. 11. 



Hippa asiatica, Milne-Edwards, Hist. Nat. Crust, ii. p. 209 (1837) ; 

 Heller, Reise der Novara, Crust, p. 73 (1865). 



The specimens which I refer to this species are very nearly 

 allied to the two preceding, but difi'er from them in the following par- 

 ticulars : — The body is very convex and narrow, appearing almost 

 cylindrical when viewed from above. The lobes of the front are 

 very narrow and acute, the median is separated by an interval of 

 nearly twice its own breadth from the lateral onss, which do not 

 project much beyond it. The median spine of the second joint 

 of the antennae is very long, and bent very slightly inward. The 

 antero-internal lobe of the third joint of the maxillipedes is broad, 

 rounded, and but little prominent. The terminal joint of the 



