214 CONTRIBUTIONS TO CANADIAN PALyEONTOLOGY. 



Atrypa reticularis. Mackenzie Eiver, at the " Eampart.s," E. G. McCon- 

 nell, 188S: one fine specimen, on Atriipa reticularis. 



MONOTRYPELLA Un.IIGA* (N. Sp.) 



Plate 30, figs. 1, la-d. 



Polyzoary erect, ramose ; its terminal branchlets (which are all that 

 happen to be preserved) slender, cylindrical and widely bifurcated, 

 with rounded and slightly expanded apices: surface comparatively 

 smooth, no monticules being developed. Cells polygonal, consisting of 

 autopores only : cell walls thin internally, but much thickened at and 

 near their apertures: tiansverse diaphragms thin, complete and placed 

 at very irregular intervals. 



Peace Eiver, at Yermilion Falls, E. G. McUonnell, 1889 : a few fi'ag- 

 ments of the terminal branchlets, averaging ten to twelve millimetres 

 in length and about two mm. in thickness, 



Ceramopora Huronensis, Nicholson. 



Ceramoxiora IIvrorimsiK, IStidiolson. 1875. Eep. PaUeont. Prov. Out., p. 78, pi. ii, 

 figs. 5, 5a. 



Hay River, forty miles above its mouth, E. G. McConnell, 1887 : a 

 few specimens which are probably referable to this sj}ecieH. One is 

 parasite upon Orthis striafula, and the others form four or live small 

 isolated colonies upon a large specimen of Alveolites vallorum, 



BRACIIIOPODA. 



Crania Hamiltoni^, Hall. 



Crunia Hamiltom:,', Hall. 1860. Thirteenth Eeg. Eep. K. Y. St. Cab. Nat. Hist. 



p. 77. 

 Crania Hamiltoniu; Bal). 1867. Va.\. St. N. Y., vol. IV, pt. 1, p. 27, pi. iii., figs. 



17-23. 

 Crania HamiUoniiv, Nicholson. 1875. Eep. Pakcont. Prov. Ont., p. 82. 



Hay Eiver, forty miles above its mouth, E. G. McConnell, 1887 : 



* The local Indian name lor the Peace Kiver. 



