268 Rev. T. Hincks on the 



Schizoporella magnifica, n. sp. (PI. X. fig. 1.) 



Zooecia quincunclal, large, ovate, rather depressed, sutures 

 shallow ; surface reticulate, no boundary-lines ; orifice subor- 

 bicular, with a deep pointed sinus on the lower margin, wide 

 at the entrance, tapering off to a point below, a small notch 

 on each side just below the opercular denticles ; peristome 

 unarmed, not elevated ; on each side of the orifice, close to the 

 top of the cell, a pointed avicularium, erect, with a triangular 

 mandible, slightly produced, a semicircular orifice at the base 

 of the beak ; at each side on the front of the cell, a little below 

 the orifice, a similar avicularium, erect, borne on the inner 

 surface of an elevated boss. Ooeciiim much elongated, ample 

 and rounded above, tapering off towards the orifice, where it 

 is much contracted, and ends in a subtubular opening which 

 barely overhangs the top of the oral valve, surface reticulate. 



Hah. Incrusting stones &c. 



A splendid form, of which the remarkable ovicell is the 

 great feature. 



Schizoporella serratimargo, n. sp. (PI. X. figs. 6.) 



Zoarium erect, bilaminate, branched ; branches wide, flat, 

 compressed, extremities rounded. Zooecia quincuncial ; when 

 young, distinct, ovate, moderately convex (sutures shallow), 

 the oral region raised, surface dense, uneven, entire or with a 

 few marginal punctures ; orifice oval, with a small sinus on the 

 lower margin, operculum thickened on each side, so as to give 

 the appearance of a depression down the centi*al line ; peri- 

 stome elevated and often much thickened, bearing four spines 

 at the top ; the older cells ci-owded, confused, highly calcified, 

 primary orifice deeply depressed, a large secondary orifice 

 somewhat produced in front, almost the whole front of the 

 zooecium occupied by a large spreading elevation bearing a 

 pointed avicularium. Ooecium rounded, subimmersed, closely 

 united to the cells about it, with a smooth entire surface and 

 a large cleft in front, wide at the opening and tapering 

 upwards. Along the edge of the branches a line of gigantic 

 avicularia with bluntly-pointed mandibles directed outwards. 



I have not met with perfect specimens of this fine species, 

 and am therefore unable to give the size or precise habit of 

 growth. The broad flat branches are characteristic. 



Schizoporella Fallasii, Heller (sp.). (PI. X. figs. 7.) 



Heller places this species in the genus Eschara. It bears 

 a curious superficial resemblance to some of the forms which 



