CRUSTACEA. 137 



Crustacea, to commemorate the zeal and taste of the amiable 

 owner, whose exquisite collection of cretaceous fossils would, if 

 more fully known, greatly increase our knowledge of the fossils of 

 this period. 



Enoploclytia brevimana (M'Coy). 



Sp. Char. Carapace subcylindrical or slightly compressed, ave- 

 raging 3^ inches long and 1 inch 9 lines deep ; rostrum strong, 

 pointed, with three or four large pointed teeth on each side, 

 margins of the orbits with strong spines ; surface closely 

 studded with small tubercles and large scattered spines; 

 hands short ovate, length little more than the depth of one 

 side of the carapace, length of the moveable finger about equal 

 to, from its base to the carpus, and a little longer than the width 

 of the hand ; both fingers incurved at the tip and set on the 

 inner edge with a row of blunt hemispherical teeth half their 

 diameter apart ; carpus subtrigonal, a little longer than wide ; 

 arm compressed, about one-third longer than wide ; surface of 

 hand and carpus with many large, curved, spinose tubercles, 

 and an intermediate, close, smaller tuberculation ; length of 

 moveable finger 1 inch 1 line, from thence to carpus 11 lines, 

 width of hand 1 inch. 



The very short small ovate hands easily distinguish this spe- 

 cies from the other two. 



Common in the lower chalk of Cherry Hinton, near Cam- 

 bridge. 



{Col. University of Cambridge and Rev. T. Image.) 



(Fam. Thalassinidce.) 



Meyeria (M'Coy), n. g. 



Gen. Char, Carapace strongly compressed laterally ; nuchal fur- 

 row very deep, V-shaped, the lateral portions nearly straight, 



Meyeria. 

 a. Side view. h. Carapace seen from above, c. Tail- flaps. 



