DR WILLEY FROM THE SOUTH SEAS. 417 



36. Synalpheus neomeris (de Man), 1897. 



Alpheus neomeris, de Man, Zool. Jahrb. IX. Syst., p. 734 (1397). 

 One specimen, from Sandal Bay, Lifu, Loyalty Islands. 



Genus. Alpheus Fabr., 1778. 



37. Alpheus ohesomanus Dana, 1852. 



Alpheus ohesomanus Dana, U.S. E.^pl. Expeil. Crust, i. p. .574, PI. XXXIV. Fi^^. 7 

 (1852). 



Two specimens from Lifu, Loyalty Islands. One from Blanche Bay, New Britain. 



38. Alplteus yracilidigitus Miers, 1884, var. 



Alpheus gracilidigitus Miers, "Alert" Report, p. 287 (1884); de Man, Ma.\ Weber's 

 Zool. Ergebnisse, p. 406, PI. XXV. Fig. 32 (1892). 



The specimens differ from the type in that : — 



1. The lower border of the merus of the first leg is not serrate. 



2. The movable finger of the small chela wants the tooth on the inner side. 

 One ^ and one % from the Isle of Pines, New Caledonia. 



39. Alpheus laevis Randall, 1839. 



Fur references see P. Z. S. 1898, p. 1013. 



2 $ from Blanche Bay, New Britain. 1 $ from Sandal Bay, Lifn. 



40. ? Alpheus diadema Dana, 1852. 



? Alplieus diadema Dana, U.S. Expl. Expd. Crust, i. p. 555, PI. XXXV. Fig. 7 a — e 

 (1852). 



Dana describes the first joint of the wrist of the second pair of legs as being 

 " much longer than the second," but figures it as of almost the same length. In the 

 present specimen it is very slightly shorter. The hands of the first paii', which were 

 wanting, from Dana's specimen, are figured from that in the present collection (PI. XXXIX., 

 Fig. 17). 



1 $ from Sandal Bay, Lifu, Loyalty Islands. 



41. Alpheus frontalis Say. 1832. 



For references see P. Z. S., 1898, p. 1013. 



2 c/" and 1 $ from Lifu, Loyalty Islands. 



42. Alpheus aglaopheniae n. sp.. Figs. 13n — 13/! 



A single, dismembered specimen of an Alpheus found living among the branches 

 of a hydroid polyp of the genus Aglaophenia, represents, I think, a new species. 

 It is diagnosed as follows : 



"An Alpheus with the rostrum arising from the anterior border of the carapace, 

 reaching the end of the first joint of the anteunal stalk, and continued backwards as 

 a short keel on the carapace ; eye-hoods acute in front ; second and third joints of the 



