Index to Mr. John Edward Graj 's Monograph^ 8fc. 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 (Esophagus; b. commencement of the 



duodenum. 



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

 the colon. 



Art. XXIII. Index to the Species of Cyprcea described in 

 Mr, Gray's Monograph 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 various 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 

 the synonyms referred to in it. 



The names printed in the Italic character refer to synonyms, 

 Cypraea achatina .... i. 148 — iv. 73 



acicularis i. 502 



adusia i. 370 



affinis i. 51 7 



albella .... iiL 572— iv. 67 



albug^inosa i. 510 



Alga iv. 68 



Alg-oensis i. 498 



amethystea i. 77 



angustata. . . . i. 497 — iv. 84 



annularia iV. 73 



annularis iv. 82 



annulata iv. 88 



Annulus . . . . i. 494 — iv. 82 



aperta iii. 571 



Arabica i. 76— i v. 68 



Cypraea 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 occidentalis .. iv. 70 

 Argus orientalis .... iv. 70 



Arlequina i. 77 



Asellus i 375— iv. 78 



Asellus i. 374, 384 



atomaria i. 380 



Aurantium i. 150 



Aurora i. 150 — iv. 74 



Australis iii. 570 



