108 MAZATLAljf BIVALVES 



154 Lasea Pettbea, Mord. 



Cardiiun rubnim, Mont. Test. Brit. p. 83, pi. 27, f. 4. (non Hve.) 



Tellina rubra, Turt. Conch. Diet. p. 168. 



KeUia rubra, Turt. Dith. Brit. pp. 57, 258, pi. 11, f. 7, 8.— 



Forbes Sf Sanl. Br. Moll. vol. ii. p. 94, pi. 36, f. 5-7 : (animal) 



pi. O, f. 'i.— Clark Moll. Test. 3Iar. Br. p. 92.— Searles Wood 



Crag Moll. pt. ii. p. 125, pi. 11, f. 10. 

 Poronia rubra, Eerl. Rev. Ciiv. Zool. 1843, p. 175. 

 Lasaea rubra, Beach, ms. — Brown III. Conch. 1827, t. 20, f. 17-19. 

 Lessea rubra. Brown, op. cit. ed. 2, p. 93, pi. 36, f. 17, 18. 

 Petricola rubra, Grap Ann. Phil. 1825. 

 Lasea rubra, B. M. Cat. Br. Moll. vii. p. 82. — Phil. Hand. 



Conch, p. 345. 

 Bornia semilunum, Phil. Moll. Sic. vol. i. p. 14, pi. 1, f. 16, & 



vol. ii, p. 11. — Krauss Siidafr. Moll. p. 2. 

 Erycina violacea, Scacchi, Cat. 6. 

 Cycladiua Adansonii, Cantr. Bull. Acad. Brux. 

 Cyclas australis, Lam. An. s. Vert. ed. Desh. vi. 270, (teste 



G-rai/.J 

 ? Ampkidesma nucleola. Lam. op. cit. vi. 270. 

 Autonoe rubra, Leach, Br. Moll. 288, pi. 12, f. 5, 7. 

 [For other references, v. B. M. Cat. loc. cit]. 



Whether the little Mazatlan shells (of which only one pair 

 and a few valves were found,) are distinct from the typical 

 Europa?an species, must be left for future determination, when 

 its distribution shall have been better ascertained. The teeth 

 are smaller than in most British specimens, but it by no means 

 differs from them so much as do the Mediterranean examples. 

 The late, deeply regretted Prof. E. Forbes considered that 

 they might be identical. He gives the species from the North 

 and South Atlantic. Dunker quotes a similar shell from the 

 Guinea coast, and Krausb the same from South Africa. I have 

 it from Java, and Singapore (among Chamae). Dr. Goidd gives 

 it from Massachusetts, South of Cape Cod. Mr. Cuming found 

 a similar shell in abundance at Valparaiso, on high exposed 

 rocks, seldom washed by the .sea, along with a little Littorina, 

 like L. neritea. An extremely similar species is K. miliaris, 

 Desh. from Eagle Bay, Magellan. A species closely resem- 

 bling it in shape but white, and with concentric ridges (which 

 however, being irregular, may be a local variety) is from the 

 Bay of Mexillones, Desert of Atacamas, Bolivia, adhering to 

 Balani in exposed situations, (Cuming). Lamarck's Cyclas 

 australis is from the Isle of Timor, with a variety from K- 



