MAZATLAN BRYOZOA 5 



9. LEPRALIA HUMILIS, Busk, (n. s.) 



Cellulis immersis, depressis sen complanatis, superficie obscure 

 punctatis ; ore parvo rotundato, inferne subsinuato ; margine 

 simplici, tenui. 



Hob. Mazatlan ; on Imperator unguis ; L'pool Col. 

 Tablet 12 contains a group on Imperator. 



10. LEPRALIA ADPRESSA, Busk. 

 Busk in B M. Cat. p. 82. 



The Mazatlan form differs from that from Chiloe in the 

 absence or indistinctness of the radiating grooves. The mouth 

 and shape of the cell agree perfectly. 

 Hob. Chiloe, 96 fm. on shell, Damvin. Mazatlan ; on Colum- 



bella major, C. fuscata, and Pisania gemmata, not uncommon ; 



L'pool Col. 



Tablet 13 contains a group on Columbella. 



FAMILY II. CELLEPOBILm 



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



GENUS CELLEPOEA, 0. Fabr. 

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



11. CELLEPORA PAPILL^FORMIS, Busk, (n. s.) 



Cellulis sub-Jiexagonis, elevatis, superficie punctato ; ore sub- 

 rotundato utrinque denticulato ; margine simplici, tenui, avicu- 

 lariis sparsis, mandibulo 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 mamillary eminence from a hexagonal area which 

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

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

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



Tablet 14 contains a group on Imperator. 



^12. CELLEPORA CYCLOSTOMA, Busk. (n. s.) 



Cellulis suberectis, seu decumbentibus, discretis, superficie 

 punctato ; ore magno superne rotundato, inferne late sinuato ; 

 cellularum natu majorum m&rgine valde elevato, incrassato, sub- 

 inde dilatato, infundibuliformi, utrinque aviciilarium parvum 

 gerente. 



