416 ON THE STOMATOPODA ASD MACRURA BROUGHT BY 



on the biting edge of the same finger, \vrist very -short with a spine on the outer 

 and another on the inner side, meropodite shorter than the palm, with a spine on the 

 outer side at the distal end ; smaller leg of the first pair longer than the antennal 

 scale, simple, hairy, with hand long and wrist short, and fingers shorter than the palm ; 

 second leg outreaching the antennal scale by the last four joints of the wrist, wi'ist 

 S-jointed, 1=2 + 3 + 4 + 5, 5 = 3 + 4, 2, 3, 4 subequal ; remaining legs rather stout, 

 propodite longer than carpopodite, shorter than meropodite, carpopodite with one tooth 

 above at the distal end, dactyle stout, biunguiculate, numerous spines underneath the 

 propodite ; telson and uropods short and broad ; endopodite and exopodite of uropod 

 subequal, somewhat longer than telson, exojDod with first joint projecting considerably 

 outside the second and bearing on the projection a slender spine ; telson with the free 

 end subtruncate, with a low rounded lobe in the middle, two short spines on each side 

 and a long fringe, and with two pairs of movable spines on the dorsal surface." 



Length 20 mm. 



2 specimens from Sandal Bay. Lifu, Loyalty Islands. 



Genus. Synalpheus Bate, 1888. 



Synalpheus, Bate, Challenger, Macrura, p. 572 (1888) ; Coutiere, Notes, Leyd. Mus. 

 XIX. p. 206 (1897). 



34. Synalpheus biunguiculatus (Stimps.), 1860. 



? Alpheus hiunguiculatus, Stimpson, Proc. Ac. N. Sci. Philad. 1860, p. 31. 



Alpheus minor, var. hiunguiculatus, de Man, J. Linn. Soc. ZooL, XXII. p. 273 (1888). 



Alpheus sp., de Man, Zool. Jahrb. IX. Syst. p. 738, Fig. 62 (1897). 



? Alpheus tricuspidatus. Heller, Sitz. Ak. Wiss. Wien, XLiv. p. 267 (1861). 



1 $ from the Reef, Ralun, New Britain. 



Var. C, nov. One male, and a small specimen with a Bopyrid in the gill chamber, 

 taken in the mantle cavity of an ascidian at Baravon, New Britain, differ from de Man's 

 type in having the ocular spines as long as the rostrum and rather broad and triangular. 

 De Man has named two varieties A and B respectively. I propose to call the present 

 form var. C. 



35. Synalpheus demani nom. nov. 



Alpheus triunguiculatu^, de Man, Arch. Xaturg., Liil. 1, p. 508, PI. XXII. Fig. 2 

 (1887). 



According to Coutiere the name triunguiculatus was given by Paulson in 1875 to 

 a species which must be included m the genus Synalpheus. It is very unlikely that 

 this species is identical with that to which de Man gave the same name in 1887, 

 describing it as new. A new name is, therefore, probably wanted, and the most ap- 

 propriate course is obviously to call the species after its first describer. 



2 % from Lifu, Loyalty Islands. 



