392 THE CANADIAN NATURALIST. [Vol. X. 



SCHIZOPORELLA MACULOSA, N. SP. 



Zocecia quincuacial, rather small, moderately convex, sutures 

 shallow; surface shining, covered with small punctures, which are 

 closed in by a brownish membrane, and give a spotted appear- 

 ance to the front wall ; orifice arched above, with a shallow 

 bluntly-pointed sinus below, not contracted at the opening; peri- 

 stome slightly thickened, on one side just below the orifice (or 

 occasionally on both sides) a small rounded avicv.larium on a 

 prominent boss. Otecium (?). 



Loc. Queen Charlotte Islands, on shell (Dr. G. M. Dawson). 



SCHIZOPORELLA TUMULOSA, N. SP. 



Zocecia quincuncial, very regularly arranged, very convex, 

 ovate, much elevated centrally below the mouth, the wall sloping 

 steeply down to the margin of the cell ; surface dense, smooth, 

 rather glossy, areolated round the edge, ridges radiating towards 

 the centre; orifice orbicular, with a small central sinus, not con- 

 tracted at the opening, peristome not elevated ; immediately 

 below the orifice, at one side of the sinus a rostrum, bearing on 

 one side a pointed aviadarium, the beak very slightly bent at 

 the extremity, mandible directed upwards, the rostrum rising 

 into a short mucronate point behind the avicula7'ium ; very com- 

 monly on the front of the cell near the bottom a much raised 

 amcularium (mounted on a prominent elevation), with a pointed 

 mandible directed straight outwards. Ooecium rounded, smooth, 

 much broader than high, with a tall oral arch, filled in by a 

 calcareous phite. 



Loc. Off Cumshewa Harbor, Queen Charlotte Islands, in 20 

 fms., forming a brownish spreading crust (^Dr. G. M. Dawson). 



SCHIZOPORELLA DAWSONI, N. SP. 



Zocecia ovate, quincuncial, very moderately convex, separated 

 by raised lines, highly calcified, vitreous; surface reticulato- 

 punctate (punctures appearing as deep shafts in the vitreous 

 crust) ; orifice arched above, much broader than high (narrow 

 between the upper and inferior margins) ; a shallow rounded 

 sinus in the centre of the lower margin, not contracted at the 

 opening; peristome perfectly simple, not raised. Avicularia 

 none. Ocecium rounded, closely united to the cell above, some- 

 what depressed in front, glossy, covered with rather large punc- 

 tures ; a prominent, thickened border round the opening. 



Loc. Virago Sound, Queen Charlotte Islands (Dr. G. M. 

 Dawson) . 



