327 



A a Rostral carina low, rounded, reaching to the posterior 

 extremity of the eyes. Terminal spine of scaphocerite 

 reaching with one-fourth of its length beyond the tip of 

 the lamina. Merus of 3 rd legs 5-times as long as wide . /eviusctilus Dana 



/;., Rostrum extremely short, not continued as a rostral carina. 

 Terminal spine of scaphocerite hardly reaching beyond 

 the rather broad scale. Merus of 3 rd legs 4, 5-times as 



long as wide Bastardi Cout. 



(H. COUTIÈRE, Alpheidae Mald. and Laccad. Archip. 1905, p. 907, PI. LXXXV, 

 fig- 45)- 



g« Groove or depression on the supero-internal surface of the 

 larger chela triangular. 



h x Merus of both chelipeds unarmed at the apex of infero- 



internal margin. Scaphocerite very broad, terminal spine 



not reaching beyond the rounded tip. 



i x Palm of the small chela of the male 1,9-times, of the 



female i,6-times as long as high; palm of the small 



chela of the male distinctly notched both on the upper 



and on the lower margin Euphrosyne de Man 



i„ Palm of the small chela of the male 2,4-times, of the 

 female 2,8-times as long as high; palm of the small 



chela of the male with both margins entire . . microrhyncfms de Man 



// 3 Merus of larger cheliped with a spine at the apex of 

 infero-internal margin. 

 L Smaller chela of the male 8 — 9-times as lone as hig-h. 

 larger chela 3-times. Lobes terminating the upper and 

 the lower margin of the larger chela acute .... japonims Miers 

 (E. J. MIERS, in: Proc. Zool. Soc. London, 1879, p. 53). 



L Smaller chela of the male less than 6-times as long as hig-h. 

 k x Merus of 3 rd legs 5- or less than 5-times as long 

 as wide. 

 /j Smaller chela of the male 5-times as long as high, 

 with the margins of the palm nearly entire. 

 ui x Rostrum obtuse above, rather considerably widened 

 backward. Lobes terminating the upper and the 

 lower margin of the large chela acute .... Edzuardsi Aud. 

 (H. COUTIÈRE, Alpheidae Mald. and Laccad. Archip. 1905, p. 912, PI. LXXXVI, 

 fig. 50). 



>u 2 Rostrum obtuse, rather considerably widened back- 

 ward. Lobes terminating the upper and the lower 



margin of larger chela obtuse ("en ogive") Atcdouini Cout. 



'95 



