38 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



Localities — Continued : 



Subspecies elongatus — Continued — 



Florida, St. Martins Eeef, Lieut. J. F. Moser, U. S. N., 



1 specimen. 

 Florida, H. Hemphill, 1 specimen. 



Florida, Key West, Union University collection, 1 specimen. 

 Jamaica, Albatross, 3 specimens. 

 Venezuela, M. Cliaper, Paris Museum. 

 Bahia, Hartt Explorations, R. Rathbun, 1 specimen. 

 Desterro, Fritz Miiller, Paris Museum, 



Type of S. fritzmuUerl— Cut No. 6970, U.S.N.M. 



Type of S. fritzmillleri elongatus.— Cat. No. 38394, U.S.N.M. 



SYNALPHEUS HEMPHILLI, new species. 



The si3ecies is very like the preceding, the differences being as 



follows : 



The rostrum is always much longer (about twice) than the lateral 



spires; the feet of the third pair are a little shorter and thicker, 



their relative proportions 

 being, carpus 1 ; meropo- 

 dite 2.5 ; propodite about 

 2; the meropodite is 3.5 

 times longer than wnde; 

 on the dactyl the ventral 

 hook is perpendicular to 

 the lower border and its 

 margins form a double 

 curve, convex, then a lit- 



PlG. 20. SyNALPHKUS nEMPHILLI. »!, FOOT OF THIRD tiC COUCaVC tO tlie pOlUt ^ 



PAin, bermida.s ; m"j extremity of foot of third behind the verv marked 



PAIR, Albatross Station Xo. 2409. i • i • <• 



third promnience lorms 

 a right angle at the summit, projecting a little in a spine. 



It is therefore almost solely the form of the hook which dis- 

 tinguishes the two species, for the chela of the first pair, the telson, 

 and the carpocerite are quite alike ; this character of the dactyls is 

 not only very marked, but perfectly constant in presence and in degree. 



There is in this species, as in the preceding, an ^^oxyceros " form, 

 in which the antennal scale equals the antennule, its lateral spine 

 much exceeding the carpocerite. The resemblance of the.se two forms 

 to S. nilandensis and S. nilandensis oxyceros Coutiere, of the Mal- 

 dives, is extremely close. The differentiation from S. nilandensis, in 

 which the supraorbital spines are equal to the rostrum, the ventral 

 hook of the dactyl is very strong, the supernumerary hook very dis- 



