1898.] FROM THE SOUTH PACIFIC. 1013 



22. Alphefs puolificus Bate, 1888. 



AlpJieiis jjrolificus. Bate, ' Challenger' Macrura, p. 556, pi. xcix. 

 fig. 4 (1888) ; Ortmann, Zool. Jalirb. v. Syst. 3, p. 484 (1890). 

 One specimen from Funafuti. 



23. Ai-PHEUS PACHycHiEus ytimpson, 1860. 



Alpheu.t 2}<'ic7i>/chirus, Stimpson, Proe. Ac. N. Sci. Pliilad. 1860, 

 p. 99 ; Ortmann, Zool. Jahrb. v. Syst. 3, p. 489, pi. sxxvi. 

 tig. 17 a, Ic (1890). 



Three specimens from Eotnma. 



24. Alphetjs gkaoilipes Stimpson, 1860. 



Aljpieus gracilipes, Stimpson, Proc. Ac. N. Sci. Philad. 1860, p. 31. 

 One female from Eotuma. 



25. Alpheus punafutensis, n. sp. (Plate LXV. figs. 10-10 Ti.) 



Definition. — " An Alpheus with the rostrum arising from the 

 anterior border of the carapace, continued backwards as a keel 

 between the eyes, and not reaching the end of the first joint of 

 the antennular peduncle ; with the eye-covers unaruied ; the 

 scale at the base of the first antenna not so long as the first joint 

 of the peduncle, the second joint of this peduncle somewhat 

 longer than the first, nearly twice as long as the third ; the second 

 antenna with a rudimentary spine on the basal joint, and the 

 scale longer than the peduncle of the first antenna, as long as 

 that of the second ; longer leg of the first pair notched above and 

 below, with a longitudinal ridge on the outside and the fingers 

 shorter than the palm, without a spine on the merus ; smaller leg 

 of tlie first pair simple in structure, with elongated fingers ; legs 

 of second pair longer than those of first, wrist with second joint 

 sliglitly longer than first, which again is longer than fifth, and 

 third and fourth joints short, subequal ; merus of legs of third 

 and fourth pairs with a spine ; endopodite and exopodite of 

 uropods subequal, somewhat longer than telson." 



The mouth-parts and other limbs are shown in figs. 10 5-e. 



When alive the specimens were of a green colour. Length of 

 largest specimen 24 mm. 



This species may be distinguished from A. edivardsi by the 

 following characters : — 



(1) The scale of the basal joint of the first antenna is not so 



long as that joint. 



(2) The proportions of the joints in the wrist of the second 



pair of legs are different in the two species. 



(3) The merus is provided with a spine in the third and fourth 



pairs of legs. 



(4) The smaller leg of the first pair has the movable finger 



simple in both sexes. 

 Se\en specimens from Funafuti ; three of them females with 

 eggs. 



