242 



posterior alation and may be nearer to Ulrich's C grandis, but most of 

 them are too imperfect and badly preserved to be determined specifically. 



PTEROPODA. 



OoNULARiA. (Species undeterminable.) 



A few fragmentary specimens, collected at Deer Island by Mr. Tyrrell 

 in 1889, are probably referable to the genus Conularia, but none of them 

 are sufficiently well preserved to be determined specifically, though they 

 appear to be quite difierent to the C. asperata of the Winnipeg limestones. 



CRUSTACEA. 



OSTRACODA. 



Apaechites Tyerellii, Jones. 



Aparchites Tyrrellii, Jones 1891. Geol. Surv. Canada, Contr. to Canad. 



Micro-Pal., part 3, p. 62, pi. 13, figs. 14, a-c. 



The types and only known specimens of this species were collected at 

 Great Black Island, near Big Island, Lake Winnipeg, by Mr. Tyrrell 

 in 1889. 



Errata. 



Page 151 — Line 2 from the top, for "regularity" read "angularity.'' 

 Page 155 — Line 6 from the top, for " Porites" read " Protarcea." 



