4 MAZATLAN BRYOZOA 



6. LEPEALIA EOSTBATA, Busk, (n. s.) 



Cellulis immersis, superficie tuberculatd sen, granulatd ; ore 

 immerso, margine superiori Inconspicuo ; margine inferiori pro- 

 funde sulcato ; aviculario magno, sessili, armato. 



The lower or interior margin of the mouth in the fully formed 

 cells, is deeply grooved in the middle ; and on one side of the 

 sulcus is a strong, short, blunt, spinous process ; on the other 

 a comparatively large raised avicularium, which faces towards 

 the sulcus, and whose mandible is acute and points upwards 

 and outwards. The surface of the cell is often beset with short 

 raised spines or processes ; and these, projecting over the mouth 

 of the cell below, give it the appearance of being furnished with 

 several oral spines. 

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



Tablet 8 contains a group on Imperator. 9, one on base of do. 



7. LEPEALIA MARGINIPOEA, JReuss. 



Fossil Polyp, d. Wiener Tertiar. Beck. p. 88, pi. 10, fig. 23. 



Cellulis ovatis, convexis seu subdepressis, immersis, asperulis, 

 margine punctatis ; ore rotundo seu subelliptico ; margine sub- 

 incrassato, singulo latere avicularium gerente. 



As the form appears precisely to resemble the tertiary species 

 described and figured by Heuss, I have applied his name, and 

 in great part employed his character. 

 Hab. Mazatlan ; on Imperator unguis ; L'pool Col. Fossil, 



Vienna. 



Tablet 10 contains a group on Imperator. 



8. LEPEALIA HIPPOCEEPIS, Bush, (n. s.) 



Cellulis immersis, superjicie punctatis ; ore suborbioulari seu 

 elliptico ; margine superiori cellularum natu majofum, inconspi- 

 cuo, inferiori et later all incrassato utrinque aviculanum gerente. 



The peculiarly horse-shoe shaped mouth of the older cells, 

 sufficiently distinguishes the present from the preceding species, 

 to which, in the mouth alone of the younger cells, it bears some 

 resemblance. 



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

 Tablet 11 contains a group on Imperator. 



