STOMAPODA. 139 



of upper antennae very large and excavated above, so that 

 the eyes can lodge in the cavity; carapace with a crest 

 down the middle, and a groove on each side of this crest. 



First, second, and third pairs of legs two-toed ; the wrist 

 of fourth and fifth pairs of legs not ringed. The false 

 abdominal legs terminating in two ciliated plates. The tail- 

 fin long, its middle plate triangular and grooved beneath 

 down the middle. 



PeNjEUS Caramote, Bisso, sp. Davies' Grooved Shrimp. 

 — Beak shorter than the peduncle of upper antennae, with 

 twelve teeth on its upper edge, and beneath with one. 

 There are three grooves on carapace, one on each side of 

 beak, and a third shorter one separating the two grooves on 

 the posterior part of carapace. 



British coast, very rare, taken on the coast of Anglesea 

 by the Rev. H. Davies. It is a common species in the 

 Mediterranean, where it attains the length of seven inches. 



Order II. STOMAPODA, Latr. 



In the species of this curious order, the branchiae are 

 always external, and not lodged, as in the preceding order, 

 in inner chambers of the carapace. These gills, instead of 



