314 



as long as the posterior margin is wide. Merus of y^ legs 



5-times as long as wide in the middle ........ Danae Cout. 



(H. COUTIERE, Alpheidae Maid, and Laccad. Archip. 1905, p. S87, PI. LXXVII, 

 fig. 26). 



b„ Dactyh of ■'^^ and 4* legs with a small accessory tooth on the posterior 

 margin. Second antennular article 2, 5-times as long as thick. Ter- 

 minal spine of scaphocerite as long as carpocerite, a little shorter 

 than antennular peduncle. Telson 4,375-times as long as the posterior 

 margin is wide. Merus of 3'<^ legs 4-times as long as wide in the 



middle, apical tooth rather small Alpheus sp. 



cr., Merus of 3'<i legs unarmed, 3,6-times as long as wide in the middle. 

 Larger chela 5, 5-times as long as high. Second carpal article of 



2"<^ legs only a little longer than i^' bamlifcr Cout. 



(H. COUTIERE, in: Bull. Soc. Philom. Paris, 190S, p. 16). 



Crmitus subgroup. 



a^ Merus of 3''^ legs with an acute tooth at the apex of posterior margin. 

 b^ Dactyli of three posterior legs biunguiculate. 



c^ Scale of scaphocerite extending at least to the extremity of 2°'^ 



antennular article. 



d^ Basicerite unarmed, posterior margin of 6"^ abdominal somite 



devoid of spines in the middle. 



e^ Internal posterior margin of merus of 3''<^ legs armed with 



several movable spinules. Fingers of smaller chela shorter 



than the palm. Second legs slender, 2"*^ carpal article more 



than 3-times as long as i^' Alcyone de Man 



^jj Internal posterior margin of merus of 3''^ legs unarmed, glabrous. 

 Fingers of smaller chela shorter than the palm. Second 



legs slender, 2^^*^ carpal article 1,95-times as long as i^' . Providencei Cout. 

 (H. COUTIERE, in: Bull. Soc. Philom. Paris, 1908, p. 18). 



d„ Basicerite unarmed, posterior margin of 6"^ abdominal somite 



with an acute, median tooth in the middle. 

 Fingers of smaller chela longer than the palm. Second legs stout, 



2"^' carpal article about one and a half as long as i^' . . . Aret/uisa de Man 

 d^ Basicerite with a short, though distinct spine at the lower side. 



Posterior margin of 6^'^ abdominal somite with two small spines 



in the middle. 

 Fingers of smaller chela just as long as the palm. Second legs 



slender, 2°<i carpal article 2,43 — 2,46-times as long as the i^^ 



Internal posterior margin of merus of -^^ legs without spinules. paralcyonc Cout. 



