CATALOGUE 
OF 
MAZATLAN MOLLUSCA. 
CLASS BRYOZOA. ir. 
Bryozoa; EKhrenberg, Corall. des Roth. Meeres, 153.—Jones An. 
Kingd. 107—117.— Owen Lect. 93—101.—Audouin & Milne- 
Edwards in Lam. An. s. Vert. ii. 104, 2de ed.—Carpenter 
Prine. Comp. Phys. ed. iv. pp. 50—68. 
Potyzoa, J. V. Thompson, Zool. Res. Mem. v. 92.—J. HE. Gray 
in Syn. B. M. 133.—Johnston’s Br. Zooph., 1. p. 253, ed. 2: 
v. note, p. 254.—Busk in Ann. Nat. Hist. 2nd Ser. vol. 10. 
_ p. 362. 
Motuuvscan Zoornyres s. Zoorpuyra Ascrprorpa, Johnst. in 
Mag. Zool. & Bot. i. 448. 
Cruiopracuiata, Parre in Phil. Trans. 1837. 
PoLyPEs TUNICIENS, VW. Edw. Mem. 16. 
Orper I. BRYOZOA INFUNDIBULATA. 
P. Gervais in Ann. des Sc. Nat. vii. 79.—Johnst. Br. Zooph. i. 
255. 
Suporper I, CHEILOSTOMATA. 
Famity MEMBRANIPORIDA. 
Membraniporide, Busk, B. M. Cat. p. 55. 
Genus MEMBRANIPORA, Blaine. 
Menbranipora, Busk, B. WM. Cat. p. 56. 
1. MEMBRANIPORA DENTICULATA, Busk, (n. s.) 
Areis cellularum rhomboideis ; apertur& interiort margine 
denticulato. 
The outline of the cells is usually distinctly defined by a 
narrow brown line. One or two rounded or triangular eminences 
(probably ovicells,) are visible on many of the cells in front 
July, 1855. b 
