MAZATLAN BEYOZOA O 



9. Lepbalia HUMiLis, Biisk, {n. s.J 



Cellulis immersis, depressis seu complanatis, superficie obscure 

 punctatis ; ore parvo rotundato, inferne suhsinuafo ; margine 

 simplici, tenui. 

 Sab. — Mazatlan ; on Imperator unguis ; L'pool Col. 



Tablet 12 contains a gi'oup on Imperator. 



10. Lepealia adpeessa, Busk. 

 Busk mB M. Cat. p. 82. 



Tlie Mazatlan form diifers from that from ChUoe in the 

 absence or indistinctness of the radiating grooves. The mouth 

 and shape of the ceU agree perfectly. 

 iTrtS.— Chiloe, 96 fm. on sheU, Z)ara'/«.— Mazatlan ; on Colum- 



bella major, C. fuscata, and Pisania genmiata, not imconomon ; 



L'pool Col. 



Tablet 13 contains a group on Columbella. 



Family n. CELLEPOEID^. 

 Busk, B. M. Cat. p. 85. 



Genus CELLEPOEA, O. Fabr. 

 Busk, B. M. Cat. p. 85. 



11. CeLLEPOEA PAPILL.EFOEMIS, Busk, (il. S.) 



Cellulis snb-hexagonis, elevatis, superficie punciato ; ore sub- 

 rotundato utrinque denticulate ; margine simplici, tenui, avicii- 

 lariis sparsis, mandAbiilo triangulari. 



A well marked and distinct form, belonging to that subdivision 

 of Cellepora in which the mouth is not armed with a projecting 

 avicularium. The top of each cell projects in the form of a 

 rounded mamUlary eminence from a hexagonal area which 

 defines the border of the cell. The cells are of very unequal 

 sizes, and very UTCgularly disposed. It is of a brownish colour. 



Hab. — Mazatlan ; on Imperator olivaceus ; L'pool Col. 



Tablet 14 contains a group on Imperator. 



12. Cellepoea cyclostoma, Busk. (n. s.J 



Cellulis subereclis, seu decumbentibus, discretis, »uperjicie 

 punctata ; ore magno superyie rotmidato, inferne late sinuato ; 

 cellularum natu majorum margine valde elevate, incrassato, sub- 

 inde dilatato, infundibuUformi , utrinque avictdariwm parvum 

 gerente. 



