-/r^-^ 



474 ifHAJTHE CANADIAN NATURALIST, (jt^ [Vol. vi. 



tr^f frtii' . ' i > Genus CONOCEPALITES. - ' >- 



'^' This genus has been used as a general receptacle for a number 

 of groups which, according to several authors, constitute distinct 

 genera. Although it has been found very convenient, there has 

 lately sprung up a disposition to dispense with it altogether. I 

 have no doubt but that this will be done, and I shall therefore 

 dispose of our species as follows. i. ;.;.:.„..* ..... .,y^i,,,,i 



c 'WJ ,txao 



J.-i^.l f...^. OOLENOPLEURA COMMUNIS, SpeC. nov. 



Ml Glabella conical, convex, about two-thirds the whole length of 

 the head, about one-third wider at the neck-furrows than at the 

 front; on a sMe view considerably elevated above the fixed 

 cheeks; neck-furrow well defined all across; neck-segment 

 thickened in the middle and bearing a small tubercle. 'JLlie 

 fixed cheeks are strongly convex but not so prominent as the 

 glabella. The dorsal furrows are deeply defined all around the 

 glabella. The front margin has a strong rounded rim, separ- 

 ated from the front part of the cheeks by a narrow, but distinct, 

 groove ; between the groove and the h\mt of the glabella, there 

 is a gentle depressitm, which separates the anterior angles of the 

 fixed cheeks. The eyes are .Huiall, situated a little in advance 

 of the mid-length of the head, distant from the side of the gla" 

 bella a little less than half the length of the head, and are con- 

 nected with the front of the glabella by an obscure ocular fillet. 

 Surface with a few scattered tubercles, just visible to the naked 

 eye, and between these numerous minute tubercles only seen 

 when magnified. 



'. The glabella exhibit traces of two or three obscure furrows on 

 each side. Length of the largest head collected five lines. 



(I-, Occurs at Chapel Arm, Trinity Bay. ^ ,' 



'! I (OV'I I'Mi: 



Fuj. II. Aiio/iolenus vcnuslitx. 



. 12. Faradoxidea tcneUus. 



'•■Ir^. \'\rs\A Anapolenus VENUSTUB, spec. tlAV. ^, 

 nl V\g. 11. 



Description, — Glabella convex, most elevated in front, obscure 

 ly angular along the median line widest at the anterior third of 



