BY J. S. KINGSLEY. 127 



Alpheus lineifer Miers. 



Alpheus lineifer Miers. Ann. and Mag. Nat. Hist., IV, xvi, p. 343, 

 1875. 



Samoan Islands (Miers). 



This species belongs either in the section with Alpheus hisincisus or 

 in that which contains A. parvirostris and A. spinicaudus; but as no 

 details are given regarding antennal spine and carpal joints, its affini- 

 ties cannot be more closely indicated. 



Genus HIPPOLYTE Leach. 

 Hippolyte prionota Stimpson. PI. II, fig. 9. 



Hippolyte prionota Stimpson, Proc. Phil. 1864, p. 153. 



I figure this beautiful species from a specimen from Puget Sound, in 

 the collection of the Philadelphia Academy. 



Genus CARIDINA Edw. 



Caridina africana nov. sp. PI. I, fig. 3. 



Carapax smooth, compressed ; suborbital spine alone present ; ros- 

 trum nearly as long as the carapax; its apex slightly refiexed and 

 armed above and below with minute teeth. Peduncle of antennulse 

 about as long as the rostrum, its penult and last joints subequal. 

 Antennal scale slightly longer than antennular peduncle, its apex reg- 

 ularly ovate, its sides parallel, no spine on the basal joint. Ambula- 

 tory feet very slender, short, the carpus of the first pair about as long 

 as the palm, of the second as long as the handfingers of both termi- 

 nated by pencils of short hairs. Dactyli of three posterior pairs of 

 feet slightly curved, simple and about one-fifth the length of the 

 propodal joints. Telson narrow, the sides straight and but slightly 

 converging to the truncate tip which falls a little short of the narrow 

 caudal lamellse of the sixth segment. 



Zulu Mission, South Africa (S. A. Grout). 



Genus XIPHOCARIS Martens. 

 In my revision of the genera of Palsemonidae (Proc. Acad. Nat. 

 Sci. Phila., 1879, p. 426), I referred the single species of this genus 

 to Caulurus of Stimpson ; but having since seen specimens, I have 



