249 



POLYZOA. 



Fenestella subaectica, Whiteaves. 

 Plate 23. The only figure. 



Fenestdla iubarctica, V7\n.te3,wea 1904. Geol. Surv. Canada, Ann. Rep., 



vol. XIV, pt. r., p. 39. 



" Zoarium spreading, somewhat fan-shaped, but probably funnel-shaped 

 when perfect. Branches very slender, carinated on the celluliferous face, 

 and averaging from a fourth to a third of a millimetre in thickness. 

 Bifurcations very infrequent in the only specimen collected, occurring at 

 intervals of five mm. or more. Interstices much wider than the branches. 

 Dissepiments about one mm. apart, or four and a half to five in the space 

 of five mm. Fenestrules longer than wide, irregular in shape but usually 

 somewhat rectangular, nearly or quite a mm. long, and approximately 

 about half as wide ns long. Zooecial apertures circular, in two ranges, 

 opening somewhat laterally, twenty in each range in the space of five 

 mm., and three to four on each side in the length of a fenestrule, closely 

 disposed but separate, slightly irregular in their distribution, sometimes 

 alternate on the two sides of the keel, sometimes opposite, their margins 

 indenting the borders of the fenestrules.- Under a highly magnifying 

 simple lens, the keel appears to be minutely spinose in places.'' 



"Portage road at falls : one fairly good specimen.'' 



" Mr. R. S. Bassler, of the United States National Museum, to whom 

 the writer is indebted for critical suggestions in regard to the structural 

 peculiarities and affinities of this species, and of those of a Phcenopora 

 from Sutton Mill Lakes, writes that the zooecial apertures of this Fene - 

 tella ' seem unusually large, but this is due to the removal of the outer 

 investment of the zoarium.' " 



BRACHIOPODA. 



Trimehella Ekwanensis, Whiteaves (nom. emend.) 



Plate 24, fig. 7 ; and pi. 25, figs. 1 and 2. 



Trimerella Equanensis, Whiteaves 1902. Ottawa Naturalist, vol. XVI, p. 141, 



pi. 2, figs. 1 & 2; and pi. 3, fig. 1. 



" Shell rather large, attaining to a length of upwards of three 



inches. Pedicle valve flattened somewhat obliquely, most convex 



and deepest at a short distance from the beak, nearly as wide as 



long, broadly rounded in front, more narrowly rounded at the sides, and 



obtusely pointed behind, the umbo and beak being moderately produced, 



their lateral margins meeting at an angle of about 98°, and the beak 



gently incurved. Characters ol the interior of this valve unknown. 



