lij^ CONTaiBDTIONS TO CANADIAN PALiEONTOLOGT. 



Belemnites. (Species undeterminable.) 



Two portions of the phragmocone and five fragments of the guard, 

 the hxtter all bi'okon at both ends, of a species of Belemnite which it 

 is, of course, quite impossible to identify from such imperfect speci- 

 mens. One of the fragments of the guard has a deep median groove, 

 which is not the case with any of the others. 



(3.) From the Peace Eiver, a pew miles below J^okt Vermilion ; 



COLLECTED BY Mr. VV. OdILVIE, D.L.S., IN 1885. 



CEPHALOPODA. 



Placenticeras glabrum. (N. Sp.) 



Plate 24, figs. 1, 1 a and 1 b. 



Shell rather strongly compj essed at the sides, its maximum breadth 

 being a little more than one fourth of the greatest diameter, most pro- 

 minent and broadest at the umbilical margin and nai'rowing very 

 slowly from thence to the periphery, which latter is narrowly but 

 regularly rounded. Umbilicus I'ather deep and occupying about one- 

 fifth of the entire diameter, though its outer mai-gin it. rounded and in- 

 distinctly defined. Volutions deeply embracing, fully three fourths or 

 more of the inner ones being covered : suture distinct. Ajjerture 

 obtusely and narrowly subsagittate, its outline, outside of the deep 

 basal emargination, being narrowly ellijjtic ovate. Length of body 

 chamber unknown. 



Surface apparently smooth, though not a vestige of the outer layer 

 of the test is preserved. 



The sutural line, which is minutely and angularly incised through- 

 out its entire length, is composed of two large outer lateral saddles and 

 five much smaller inner ones, as well as one large outer lateral lobe and 

 four much smaller inner ones (or seven of the latter, if three very 

 small ones on the lower part of the umbilical wall be counted) on each 

 side of the siphonal saddle and lobe. The small siphonal saddle is 

 angularly notched on each side of the centre and divided into three 

 erect spurs, the middle one of which is the shortest and the least in- 

 cised at its margin. The first lateral saddle is much broader than high, 

 it is also broadej' than the second, but not quite so high. The upper 

 portion of the first lateral saddle is deeply divided near the middle into 



