CRUSTACEA. 79 



No. 131. Lobocarcinus Paulo-Wurtemburgensis, Meyer. 



This interesting and well-preserved fossil Crab 

 occurs in considerable numbers in the Lower Ter- 

 tiary (Nummulitic) beds of the Gebel ^Mokattam in 

 the suburbs of Cairo, Egypt, from whence this speci- 

 men is derived. 



No. 132. Palaecorystes Stokesii, Mantell. 



Carapace. A small Crustacean — intermediate in form between the Brachy- 

 iira and Anoimira, and quite abundant in the Upper Greensand and Gault of 

 England. Two specimens, from the Upper Greensand, Cambridge, England. 



No. 133. [354, Cast]. Eryon propinquus, Germar. 



This remarkable form of Crustacean bears 

 a long, flattened shield, with a round, fis- 

 sured front. It is from the Lithographic lime- 

 stone (Middle Oolite) of Eichstadt, Bavaria. 



Size, 6x5. 



No. 134. [358, Cast]. Pemphix Seurii, Meyer. 



This extinct Lobster has a carapace divided into three 

 parts, of which the anterior corresponds to the abdom- 

 inal region, the middle to the heart and genital regions, and 

 the posterior to the branchial. It was by these long-bodied 

 forms (Macrura) that the Decapod Crustaceans were at first 

 represented in the Geological Series. The specimen is from 

 the Muschelkalk (Middle Trias), Crailsheim, Wurtemberg. 

 Original in the Ward Collection of the University of Roch- 

 ester. Size, 6x3. 



No. 135. [1202, Cast]. Hoploparia (Astacus) longimana, Sow. 



This long-tailed Decapod resembles the Lobster. The cheeks are prolonged 

 in the shape of semi-cylindrical horns ; and the fore-arms are very long and 

 unequal. From the Greensand, Lyme-Regis, England. 



Size, 10 x 3. 



