ANOMIA. BOWL-SHELL. 5 



7. Anoniia Psittacea. Parrot-beak Bowl-shell Fig. 42, 

 .43, 44. 



JW*ter, pi. 211.f. 46. 



Shell blackish horn-color, semitransparent, oval, rather 

 convex, with numerous very fine regular longitudinal ribs ; 

 the sides abruptly turned in anjl flattened, without the ribs, 

 but marked with a few irregular striae ; the front margin a 

 little indented on each side and projecting in the middle z 

 one valve produced into an elongated incurved and pointed 

 beak, like a parrot's bill; the other oval and rather flat ; 

 the perforation somewhat triangular : inside dull greyish- 

 white, with a strong tooth-like projection each side a little 

 below the beak, and which reaches down the incurvature 

 of the sides in a strong rib-like form : length nearly an incrj. 

 and a quarter ; breadth an inch. 



A specimen of this very rare shell we found on the shore 

 about a mile to the east of Teignmouth, after a severe gale, 

 and have since seen several broken fragments : but we suspect 

 they come from very great depths, v. m. 



8. Anomia Terebratula. Pierced Boul-shell 



Da Costa s Elements, p. 292. pi. 6- f. 3. 



Shell somewhat oval, thin, brittle, transparent, dirty 

 white, nearly smooth ; one valve tumid, truncate, and per- 

 forated at the summit, and inflected over the other; the 

 other valve not quite so tumid, and something smaller : 

 length an inch ; breadth about three quarters. 



A single specimen of this rare shell was dredged up alive 

 in Dublin bay, and was placed in the {tluseum of the Dublin 

 Society, v. v. . 



9. Anomia Cranium. Death's-head Bowl-shell 

 Terebratula Cranium. L,inn. Tram, xi. pi. 13. f. 2 B. 

 Shell oval, convex, equivalve, thin, brittle, sernitranspa- 



rent, whitish-brown, minutely striatc both longitudinally 

 and transversely, giving it a very fine shagreeneil appear- 

 ance, with a few irregular concentric wrinkles ; the upper* 

 valve projecting beyond the lower, nearly rouqjded in front, 

 where there is a small perforation j inside thickened about 

 the beaks, forming in the larger valve a process on cucli 

 side for the connecting hinge ; under which there is a de- 

 ft 3 precision 



