252 Rev. T. Hincks on new 
over its whole extent with punctures; orifice arched above, 
the lower margin almost entirely occupied by a wide very 
shallow sinus ; peristome thin, moderately raised, extended 
in front (beyond the sinus) so as to form a small chamber, 
in which is a rounded orifice (? avicularium). Ocecia pro- 
fusely developed, very large (covering about two thirds of 
the cell above), elongate, rounded above, with a tall oral 
arch, thickly covered with slight granulated ridges, which 
radiate from the opening to the base. 
Loc. Queen Charlotte Islands, under 30 fms., attached to a 
stem, and on shell (Dr. G. MW. Dawson). 
Schizoporella maculosa, u. sp. 
Zoecta quincuncial, rather small, moderately convex, su- 
tures shallow; surface shining, covered with small puncta, ~ 
which are closed in by a brownish membrane, and give a 
spotted appearance to the front wall; orifice arched above, 
with a shallow bluntly-pointed sinus below, not contracted at 
the opening ; peristome slightly thickened, on one side just 
below the orifice (or occasionally on both sides) a small rounded 
aviculartum on a prominent boss. Occiwm (?). 
Loc. Queen Charlotte Islands, on shell (Dr. G. M. Dawson). 
Schizoporella tumulosa, n. sp. 
Zoecia 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 radia- 
ting towards the centre; orifice orbicular, with a small central 
sinus, not contracted at the opening, peristome not elevated ; 
immediately below the orifice, at one side of the sinus a ros- 
trum, bearing on one side a pointed aviculartum, the beak 
very slightly bent at the extremity, mandible directed up- 
wards, the rostrum rising into a short mucronate point behind 
the avicularium ; very commonly on the front of the cell near 
the bottom a much raised avicular‘um (mounted on a promi- 
nent elevation), with a pointed mandible directed straight 
outwards. Oaciwm rounded, smooth, much broader than 
high, with a tall oral arch, filled in by a calcareous plate. 
Loc. Off Cumshewa Harbour, Queen Charlotte Islands, in 
20 fms., forming a brownish spreading crust (Dr. G. MW. 
Dawson). 
Schizoporella Dawsont, n. sp. 
Zoecia ovate, quincuncial, very moderately convex, sepa- 
rated by raised lines, highly calcified, vitreous; surface reti- 
