38 FOSSIL MALACOSTRACOUS CRUSTACEA. 



This genus was first determined by Meyer. Three, if not four, species have been found 

 in Britain, of which the present, and probably a new one, only belong to the creta- 

 ceous beds. 



There are in Mr. Carter's collection of the Cambridge Greensand Crustacea two 

 fragments of the carapace, which certainly appear to belong to a species of this genus, 

 which differs from G. cretacea in having that portion of the carapace anterior to the nuchal 

 furrow granulated as well as the branchial regions, instead of being polished, and the 

 longitudinal ridges are similar in character. The fragments are too imperfect to form the 

 subject of a satisfactory description. I propose to give it provisionally the name of Glyphaa 

 Carteri. It is figured in Plate XI, fig. 14. 



