nvPKRiDj:. 30"J 



and propodos rather elongated ; dactylus nearly filiform. Dactyla 

 of the tii-st and second pairs of pereiopoda tolerably robust ; bases 

 of the third pair of ])ereiopoda dentated upon the posterior border 

 and armed with a stout tooth at the infero-anterior angle. 



" Hah. Atlantic Ocean {M. Raynaud)." — M.-Edwards. 



6. DAIRINIA. 



Dnira, Edwardu, Ann. des Sc. Nat. xx. p. 392 ; Hist, des Crust, iii. p. 83. 



Dann, U. S. Exphr. Exped. p. 997. 

 Dairiuia, Dana, U. S. Explor. Exped. p. 1442*. 



" Resembles Hyperia. Superior antenna) wanting. Inferior antennae 

 short, resembling those of Hyperia. First segment of the pereion 

 extremely narrow and almost entirely hid by the second. Second 

 pair of gnathopoda complexly subch elate t ; carpus inferiorly 

 produced nearly to the extremity of the propodos ; dactylos short 

 and cur^'ed." — M.-Edwards. 



1. Dairiuia Gabertii. 

 Daira Gabertii, Edwards, Ann. des Sc. Nut. xx. p. 393. 



" Cephalon very large, less raised than the pereion, and almost 

 entirely occupied by the eyes. Antennas veiy short and subulate. 

 Pereion not inflated as in Hyperia, but diminishing gradually in 

 size posteriorly. Gnathopoda very small, compressed, and nearly 

 of the same form ; the inferior angle of the carpus less developed 

 in the first than in the second pair. First and second pairs of 

 pereiopoda longest. Peduncle of the first three ])airs of pleopoda 

 longer and more slender than in Hyperia, and their terminal rami 

 nearly linear ; the three posterior pairs of pleopoda having the 

 rami long and pointed. 



" Length about 4 lines. 



' ' Hdh. Found in the Indian Ocean by the officers of * La Chevrotte '." 

 — M. -Edwards. 



2. Dairinia debilis. (Plate L. fig. 4.) 

 Daira ? debilis, Dana, U. S. Exphr. Exped. p. 99L pi. 68. f. 3. 

 " Cephalon in the profile a little oblong and subtriangular, obtuse in 

 front, nearly filled \\'ith the pigment of the eyes. Pereion highest 



* Dana lias changed the name of this genus from Daira to Dairinia, in con- 

 sequence of the former name having been previously emjiloycd. 



|- '■ Eiifin Icspalti's (le la sccuiide paire se Icrniinenl par une espece de main 

 didactyle, dont le doigt mobile (propodos) dt'iiasso uii pcu le doigr inv.uobilc 

 (inferior angle of the carpus), et est armo au bout d'lni ongle (dactylos) crochu 

 ct mobile." — M.-Edwards's Hist, des Crust. 



