BY J. S. KINGSLEY. 117 



Alpheus streptochirus Stm. 

 Alpheus streptochirus Stm., Proc. Phil. p. 30 (1860). 

 Cape Verdes Is. (Stm.). 



Alpheus brevipes Stm. 



Alpheus brevipes Stm. Proceedings Phil. Acad., p. 30 (1860). 

 Hawaiian Is. (Stm.) 



Alpheus barbara Lockington. 

 Alpheus barbara Lckn. 

 Alpheus clamator Kingsley, Bull. U. S. Geol. Survey, iv, p. 



Alpheus euchirus Dana. 

 Alpheus euchirus Dana. 



**A spine on the basal joint of the antennae. 



Alpheus clamator Lockington. 

 Alpheus clamator Lock., Proc.. Cal. Acad. vii, p. 43 (1876) Ann. ajid 



Mag. N. H. 

 Sta. Barbara Is. (Lock.), 



Alpheus collumianus Stm. 



Alpheus collumianus Stm., Proc. Phila. Acad., p. 30 (1860). 

 Bonin Is. (Stm.) 



The following species belong in the section with the three-spined 

 front (A) but no details are given of the hands and so their affinities 

 cannot be recognized from the descriptions given. 



Alpheus acutofemoratus Dana. 

 Alpheus acutofemoratus Dana, Proc. Phil. Acad., vi, p. 22 (1852) U. S. 



Ex. Crust, p. 550, pi. XXXV, f. 2 (1852). 

 Balabac Straits (Dana). 



Alpheus monoceros Heller. 

 Alpheus monoceros Helle,^ Sitzungsberichte, K. Acad. Wiss. Wien, 



xliv, p. 274 (1862). 

 Red Sea (Heller). 



B. Kostrum spiniform, ocular hoods rounded, not spiniform. 



a. Basal joint of antennal with an external spine. 



* Larger hand constricted above and below. 



First joint of carpus of second pair longer than the second joint. 



