DEC APOD A. 



BRACHYURA. 



MASKED CRAI3. 



159 

 CORYST1D&. 



MASKED CRAB. 



Corystes Cassivelaunus. 



PENNANT, Brit. Zool. iv. t. vii. p. 6. 

 HERBST, 1. 1. xii. f. 72. Mas. 



t. xii. f. 71. Fern. 

 FABR. Suppl. 398. 

 LATR. Hist. Nat. des Crust, et Insect. VI. p. 122. 



EDW. Hist, des Crust. II. p. 148. COUCH, Corn. 



Faun. p. 74. 

 Cassivelaunus, LEACH, Edinb. Encycl. VII. p. 395. Mai. Brit. t. i. 



THE carapace in this species is longer than it is broad, in 

 the proportion of nearly three to two ; convex, with the 

 regions somewhat distinctly marked, having a groove sur- 



Cancer 



personatus 

 Albunea dentata, 

 Corystcs dentatus, 



