112 CARCINOLOGIC4L NOTES; 



Alpheus euchirus Dana. 



Possibly this species should be arranged here. I have, however, 

 placed it in the section with contorted hands. The dactylus works 

 slightly out of the vertical plane. 



** Larger hand notched above, entire below. 

 § A spine on basal joint of antenna. 



Alpheus gracilipes Stimpson. 



Alpheus gracilipes Stimpson. Proc. Acad. Nat. Sci., 1860, p. 31. 

 Tahiti (Stimpson). 



Alpheus malleator Dana. 



Alpheus malleator Dana. U. S. Exp. Exp. Crust., p. 557, pi. 35, f. 9 

 (1852). 

 Rio Janeiro?! (Wilkes Exp., Phil. Acad.). 



Alpheus gracilis, Heller. 



Alpheus gracilis Heller. Sitzungsber. k. Akad., Wien, xliv, i, p. 271, 

 pi. Ill, figs. 19-20 (1862). 

 Red Sea (Heller). 



§§ No spine on basal antennal joint. 



Alpheus trispinosus Kingsley. 



Betceus trispinosus Stimpsou. Proc. Acad. Nat. Sci., p. 32 (1860). 

 Alpheus trispinosus Kingsley. Bull. U. S. Geol. Surv.,IV, 190 (1878). 



What reason Dr. Stimpson had for calling this a Betceus I cannot 

 imagine ; for, according to his description, it has a long rostrum and the 

 larger hand is not inverted, the only characters given for the genus 

 Betceus by Dana. 



Port Jackson, Australia (Stimpson). 



*** Larger hand with both margins entire. 



§ First joint of carpus of second pair of feet shorter than, or at the 

 most equal to, the second and third joints. A spine on the basal joint 

 of the second antenna. 



Alpheus socialis Heller. 



Alpheus socialis Heller. Reise der Novara, Crustaceen, p. 106, pi. 10, 

 f. 1 (1865) ; Miers Catalogue New Zealand Crustacea, p. 82 

 (1876). 

 Auckland, Sydney (Heller); New Zealand (Miers). 



