Index to Mr. John Edward Gray's Monograph, ^c. 213 



Description of the Plate. 

 Tab. VII. 

 Fig. 1 . Fifth molar tooth, upper jaw, seen from the outside. 



2. The same, seen from below. 



3. The stomach: a. the (ssophagus; b. commencement of the 



duodenum. 



4. Part of the intestinal canal; a. the ilium; b. the cceciim; c. 

 the colon. 



Art. XXII I. Index to the Species of Cyprcea described in 

 Mr. Gray's Mo7iograph of the Genus. 



Mr. Gray's monograph on the genus Cyprcea having been rendered 

 somewhat inconvenient for consultation and reference, in consequence 

 of its having appeared in detached portions in yarious numbers of the 

 Journal, it has been thought advisable to prepare an Index to the whole, 

 with the view of facilitating the research after the species described, and 

 tlie synonyms referred to in it. 



The names printed in the Italic character refer to synonyms. 

 'Cypraea achatina .... i. 148— i v. 73 



acicularln i. 502 



adusta i. 370 



affinis i. 517 



albella iii. 572-— iv. 67 



albuginosa i. 510 



Alga , iv. 68 



Algoehsis i. 498 



amethystea i. 77 



ang-ustata. . . . i. 497 — iv. 84 



annularia iv. 73 



annularis iv. 82 



annulata iv. 88 



Annulus i. 494— iv. 82 



aperta ..iii, 571 



Arabica i. 76— iv. 68 



Cyprsea Arabica i. 77, 378 



Arabicula i. 78— iv. 69 



arctica iii. 366, 367 



arenosa i, 147 — iv. 73 



arenosa iv. 84 



Argus. i. 141 



Argus minor .... iv. 79, 88 

 Argus occidentuUs ., iv. 70 

 Argus orientalis .... iv. 70 



Arlequina L. 77 



Asellus i 375— iv. 78 



Asellus i. 374, 384 



atomaria i. 380 



Aurantium i. 150 



Aurora i. 150— iv. 74 



Australis iii. 570 



