MAZATLAN BRYOZOA 3) 
9. LepRaLia HUMILIs, Busk, (n. s.) 
Cellulis immersis, depressis seu complanatis, superficie obscure 
punctatis ; ore parvo rotundato, inferne subsinuato ; margine 
simplict, tenut. 
Hab.—Mazatlan ; on Imperator unguis ; L’pool Col. 
Tablet 12 contains a group on Imperator. 
10. Leprania aADpPRESSA, Bush. 
Buskin B M. Cat. p. 82. 
The Mazatlan form differs from that from Chiloe in the 
absence or indistinetness of the radiating grooves. The mouth 
and shape of the cell agree perfectly. 
Hab.—Chiloe, 96 fm. on shell, Darwin.—Mazatlan ; on Colum- 
bella major, C. fuscata, and Pisania gemmata, not uncommon ; 
L’pool Col. 
Tablet 13 contains a group on Columbella. 
Famity IT. CELL EPORID. 
Busk, B. M. Cat. p. 85. 
Genus CELLEPORA, O. Fabr. 
Busk, B. M. Cat. p. 85. 
11. CELLEPORA PAPILLEFORMIS, Busk, (n. s.) 
Cellulis sub-hexagonis, elevatis, superficie punctato ; ore sub- 
vrotundato utringue denticulato ; margine sinvplici, tenut, avicu- 
lariis sparsis, mandibulo triangulart. 
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.—Mazailan ; on Imperator olivaceus ; L’pool Col. 
Tablet 14 contains a group on Imperator. 
12. CELLEPORA cycLostoma, Busk. (n. s.) 
Cellulis suberectis, sew decwmbentibus, discretis, superficie 
punctato ; ore magno superne rotundato, inferne late sinuato ; 
cellularwum natu majorum margine valde elevato, incrassato, sub- 
inde dilatato, infundibuliformi, utrinque avicularium parvum 
gerente. 
