108 



Subgerms Spiroglyphus Daudin. 



Spiroglyphus Daudin Recueil 1800 p. 39. 



— Paetel Catalog. p. 492. 



— Adams Gen. I p. 358. 360. 



— Mörch Proc. 1861 p. 326. 



— — Journ. Conch. 1859 VIII p. 360. 

 Bivonia Gray Proc. 1847 p. 156. 



— — Figur of Moll. p. 82. 



T. plerumque planorbiformis, corrodens, Striae incrementi expressae, lirae spirales 

 rarissime inveniuntur. 



Operculum: magnuni, crassum, superne couvexum, laminis concentricis crassis; inferne 

 planum, concentrice liratum; centro mamilla cylindrica valida, peripheria margine angusto 

 elevato, saepe compresso ; color sanguineus vel atro-purpurens. — Mörch. 



1. Spiroglyphus albidus Carpenter. 



Bivonia albida Carpenter Cat. Mazatlan p. 307. 

 Spiroglyphus albidus Mörch Proc. 1861 p. 332. 

 T. parva, albida; anfr. duabus primis laevibus turbinoideis subelevatis, postea amplec- 

 tatis; anfr. normalibus subregulariter, spiraliter contortis, marginibus subparallelis ad sese 

 plerumque, ad concham aliam parum adhaerentibus, rugis concentricis plus minus expressis, 

 spiralibus nullis. 



Long. 22, lat. 1. 



Patria: Mazatlan. 



2. Spiroglyphus annulatus Daudin. 



Spiroglyphus annulatus Daudin Recueil 1808 p. 50. 



— — Bosc. hist. Vers. 1802 I p. 187 t. 7 flg. 5. 



— — Blainville Dict. sc. p. 296. 



— — Mörch Journ. Conch. VIII p. 44. 



— — — Proc. 1861 p. 331. 



