KINGSLEY ON THE GENUS ALPIIEUS. 197 



covered. Feet of tbe first pair large, unequal ; larger hand with the 

 outer j)roximal portion smooth; at about the middle there is a constric- 

 tion of both margins, connected on the inner surface by a more or less 

 apparent groove. Slightly in advance of these constrictions, the surface 

 is abruptly compressed, two elevated lines running out from the basal 

 portion, the lower terminating in a spine ; a spine above the articula- 

 tion of the dactylus ; dactylus articulated to the outer surface of the 

 hand, working horizontally, extending beyond the thumb, fitting for 

 about half its length in a groove in the propodus 5 dactylus and distal 

 portion of propodus with long hairs. Smaller hand about half the size 

 of the larger, constricted above and below; a spine above the articula- 

 tion of the dactylus; dactylus articulated in the usual manner, working 

 vertically ; inner surface of hand somewhat hairy. Carpus of the second 

 pair five jointed, first and second joints subequal, and each as long as 

 the fourth and fifth together; third and fourth subequal; fifth slightly 

 longer. Meral joints of the remaining pairs with a spine beneath ; 

 propodi spinulose. Telson tapering ; extremity rounded. 



Santa Barbara and San Diego, Cal. (W. G. W. Harford)^ seven 

 specimens. I cannot separate from this two specimens from the Ber- 

 mudas, one collected by J. M. Jones and the other by G. Brown Goode. 



Alpheus clamator LocMngton. 



AlpTieus clamator Lockington, Proceedings California Academy of Science, 

 March 20, 1876. 



The following description is drawn from a single imperfect specimen 

 in the museum of the Peabody Academy of Science, whicTi I refer to 

 this species. 



Basal spine of antennulse stout, short, not reaching second joint of 

 peduncle ; third joint half as long as preceding. Antennse without 

 spine on the basal joint. Antennal scale narrow, the spine at the antero- 

 exterior angle acute, slender, reaching the end of the antennular peduncle. 

 External maxillipeds rather broad, extending slightly beyond the anten- 

 nal scale. Feet of the first pair unequal. Meros smooth, with a very 

 slender spine on the distal portion above. Larger hand compressed, a 

 constriction of each margin at about the middle, a spine above the 

 articulation of the dactylus, behind which a sulcus runs obliquely across 

 the superior margin. A second spine on the outside ; thumb slender ; 

 •dactylus compressed, semicircular in outline viewed from the side, 

 •slightly longer than the thumb. Smaller hand with both margins con- 

 stricted ; upper margin of palm tuberculate ; a spine above the articu- 

 lation of the dactylus; fingers about equal to the palm, completely 

 closing. Ischium and meros of second pair equal; carpus five-jointed, 

 first two joints equal, and each as long as the third and fourth, which are 



