246 HIPPONTX. 



Family HIPPONYCID^. 



Genus HIPPONYX, Defrance. 



[Journ. Pliys. Hist. Nat. vol. Ixxxviii. p. 215, figs. 1-4.] 



Shell conical, thick; summit slightly arched, directed backwards, 

 rarely curved ; surface rough or longitudinally striated. 

 Tyjpe. — Patella mitrata, Gmelin. 



Hipponyx, sp. 



G. 4300. A waterworn shell in an imperfect condition, 

 probably referable to H. a?itiqtiatus, Linnfeus; from the Miocene 

 of Muddy Creek, Victoria. Presented by Juhn Pennant, Esq. 



Family CAPULID^. 



Genus CREPIDUIjA, Lamarck. 

 [Mem. Soc. Hist. Nat. Paris, 1799, p. 78.] 



Shell ovate, elongate, patelliform ; generally having a lateral 

 spiral apex ; interior with a lamina or shelf covering the posterior 

 half of the aperture. 



Type. — Patella fornicata, Linnaeus. 



Crepidula monoxyla, Lesson (sp.). 



1830. Calyptrcea [Crepidula) monoxyla. Lesson, Voy. Coqidlle, t. ii. pt. 1, 



p. 391. 

 1834:. Crepidula contorta, Quoy and Gaimard, Voy. de TAstrolabe, Zool. t. iii. 



p. 418, pi. Ixxii. figs. 15, 16. 

 1873. Crepidula contorta. Von Martens, List Moll. N.Z. p. 28. 

 1873. Crypla contorta, Hutton, Cat. Marine Moll. N.Z. p. 32. 

 1873. Crypta contorta, Hutton, Cat. Tert. Moll. N.Z. p. 14. 

 1873. Crypta profunda, Hutton, id. p. 14. 

 1880. Crypta monoxyla, Hutton, Man. N.Z. Moll. p. 87. 

 1886. Crepidula monoxyla, Tryon, Manual of Conchology, vol. viii. p. 128, 



pi. xxxvii. figs. 36, 36. 

 1893. Crepidtda monoxyla, Hutton, Liun. Soc. N.S.W., Macleay Mem. 



Vol. p. 62. 



