289 



Long Point, Lake Winnipegosis, several specimens ; also at two local- 

 ities on the Lower Saskatchewan. 



Lepeeditia Hisingeei, Schmidt. 



Leperdiiia Hisingeri (Schmidt) Jones 1891. Contr. Canad. Miero-Palaeont. , pt. 



Ill, p. 82 (which see for the synonymy 

 of European examples of this species) pi. 13, 

 figs. 1 and 9. 



Long Point, Lake Winnipegosis : several specimens. 



Lepebditia Hisingeri, var. fabulina, Jones. 



Leperditia Hisingeri, var. fabulina, Jones. 1891. Contr. Canad. Micro- Palseont., pt. Ill, p. 



82, pi. 10, figs. 5 and 7 ; and pi. 13, figs. 3, 5, and 

 6. 



Long Point, Lake Winnipegosis ; and Grand Rapids, Saskatchewan 

 River. 



Leperditia Hisingeri, var. gibbera, Jones. 



Leperdiiia Hisinfferi, var. gibbera Jones 1891. Oj>. cit. supra, p. 82, pi. 13, fig. 4. 



Long Point, Lake Winnipegosis : one left valve. 



Leperditia marginata, Schmidt. 



Leperditia Tnarginata, Schmidt 1873. Mem. Academ. Imp. Sci. St. -Petersbourg, 



Ser. 7, vol. XXI, No. 2, p. 19, figs. 29-31 ; 

 and (1883) vol. XXXI, p. 18, pi. 1, figs. 13-19.' 



,, II Jones 1891. Contr. Canad. Micro-Palseont., pt. III., 



p. 86, pi. 10, figs. 6, i>, b. and c. 



Long Point, Lake Winnipegosis : one specimen. 



Trilobita. 



AeiDASPis perarmata, Whiteaves. 



Plate 42, fig. 3. 



Acidaspis j^erarmata, Whiteaves 1891. Canad. Rec. Sc, vol. IV, p. 300, 



pi. 3, fig. 6. 



" Body depressed, very slightly convex, its general outline, apart from 

 the marginal spines, longitudinally subelliptical and a little longer than 

 broad. 



" Head about twice as broad as long, occupying one third of the total 

 length, exclusive of the spines on the pygidium : its front margin broadly 

 subtruncate, nearly straight but faintly sinuous and very obscurely three 

 lobed, with a slight indentation on each side of the glabella immediately 

 in front of the anterior termination of each of the ocular ridges : its pos- 

 terior margin much more distinctly flexuous and curved backward in the 

 centre with a moderately convex curve, and forward with a shallowly con- 



