299 



mm xvi. 



MYTILUS: 



SHELL BIVALVE, ROUGH, GENERALLY AFFIXED BY 

 A BYSSUS ; HINGE WITHOUT TEETH, AND MARKED 

 BY A LONGITUDINAL FURROW. 



Subdivisions, f 



* Parasitical, and affixed by claws. 

 ** Flat, or compressed into a flattened form, 

 and slightly eared. 

 *** Somewhat ventricose. 



* Parasitical, and affixed by Claws. 



crista-galli. 1. Shell roundish, sharply plaited 

 and spinous ; both lips rough. 



Mytilus Crista-galli. Linnaus Syst. Nat. p. 1155. Born 



Mus. p. 122. Schroeter Einl. iii. p. 422. Gmelin, p. 



3350. Montagu Test. p. 10*6. Maton and Racket, in 



Lin. Trans, viii. p. 104. 

 Ostrea Crista-galli. Mus. Gevers. p. 424. Solander's MSS. 



Portland Cat. p. 137. lot 3060. Callone's Cat. p. 53. 



No. 1011. Chemnitz, viii. p. 52. t. 75. f. 683 and 684, 



and t. 73. f. 675. 



f The following of Gmelhi's species are omitted, and most of tliein are 

 wholly undeserving of notice. M. ulbus, p. 3356. M. argenteus, p. 3361. M. 

 ater, p. 3356. M. azureus, p. 3361. M. canaliculus, p. S36S. ftl.fasciatus, p. 

 3360. M. fulgidus, p. 3361. M. mammarius, p. 3360. M. murinus, p. 3361. 

 M. persicus, p. 3360. M. pictus, p. 3360. M. polymorph™, p. 3363. M. pur- 

 pureus, p. 3360. M.roseus, p. 3362. M. undatus, p. 3360. 



