478 



THE OANAniAN NATtJitALrST. 



[Voi. rJ. 



In tlie specimen above figured there ia an aperture in the beak, 

 but ill another there is no appearance whatever of a perforation. 

 This frenus resembles Arrotnhr, but differs therefrom in bavine 

 a hirge convex deltidium. It seems to be also closely allied to 

 k'iil(iri/inii The shell which T have described under the name 

 (if Oid/iia IjiilirniloricKx beloiii^s to this <j;enus. 



/. liellii w.is found by T. (i. Weston, in a boulder of lime8t«)ne 

 associated witii numerous fragmentary triiobitcs, of primordial 

 age, near Trois Pistoles below Quebec. A closely allied sf>ecies 

 ut the same genus occurs in the primordial limestone at Topsail 

 Head. Conception Bay, Newfoundland. 



I'OSSII.S IN THK HURON IAN UOCKS 

 AspiUKLLA Terranovmca. nov. geu. and spec. 



Fii; U A'-fiii/'-l/'i ttrr,trti/ricii. two spni nuns oti :i siimll <lal) ot 

 stcihr. sliL'htly i-i'stiiri'd 



Thcsr nr.' small ovat.' fns.-ijs tiv«' nr six lines in leriL'th and 

 about onefnurth less in width. Tli.'y Iiave a narrow riuL-like 

 Ixinl.T, within which tin re is a concave .-pace all round. In the 

 niiddl.' there is a longitudinal rof>f-like ridge, from which radiate 

 a number of grooves to the border. The general aspect is that 

 of a sMialWA//,,/* or /'■it,>//a. flattereil by jiressure. It is not 

 prohrii.le, hnwcvcr. that tiu^y are allied to either of these genera 



.Associated with tiicsc are numerous specimens of what apjiear 



to be .1; 



>/;t 



ri n ii'oii 'is siiirniis. a 



/; 



fossil that occu 



IVIIU 



iw the jiriniordial rocks in >we(leii. 



rs in a formation 

 These fos.-ils were 



first discovered hv A. .\Iiirray. K-^(| 



K<u., F.C.S. in ISdi;. Other 



liecUliellS were colli 



cteil 



1 liv Cipt. Kerr. K.N., Mr. liowley an 



1 



.Mr. Kobert' 



nil. 



Tl 



lev occur near 



h. .loll us, in the liuronian. A more de- 



tailed description will be given hereafter. 





^^iMji, 



