237 



of the dorsal furrows represent the posterior half of the eyelobes. The 

 obscurity of the occipital furrow is also an Asaphoid character. 



If Conophrys is a valid genus Mr. E. Billings' genus Shumardia has Shumardia a 

 precedence of it by five years. S. granulosa (Billings) of the Quebec group ><imilar form ' 

 appears to be a diminutive trilobite of the same type, and from near the 

 same horizon.* S. glacialis, of the same author, probably belongs to ano- 

 ther genus, f 



The late Dr. Henry Hicks, described from the Tremadoc group in South 

 Wales, two species of " Niobe," which Prof. W. C. Brogger refers to Asa- 

 phellusj ; one of these, N. Menapiensis, is too large to compare with the 

 Cape Breton species ; the other, N. solvensis, differs in the form of the 

 movable cheek, and of the hypostome. 



ASAPHELLUS (?) PLANUS, PL XVIII, fig. 11. 



Bull. Nat. Hist. Soc. of New Brunswick, vol. iv, p. 419, pi. xviii, fig. H. 



A broad oval species with smooth shield and prominent eyelobes. Asaphellus 



planus. 

 The head shield is semicircular, with strong cheek spines. It is about 



twice as wide as long, and has a broad flat margin. 



The middle piece of the head shield is narrowed in the middle by the 

 eyelobes being placed close to the side of the glabella. 



The facial sutures are strongly arched out in front of the eyelobe and 

 turning, meet along the front margin ; the front area of the cheek thus 

 left, is wider than the middle piece at the eyelobe, and three-fifths of the 

 width at the back of the middle piece, The suture curves out boldly 

 behind the eyes, turning inward again near the posterior margin, which 

 it cuts about a third of the distance from the outer margin of the head 

 shield. 



The glabella is level with the cheeks, except at the front, where it 

 slopes down to the flattened anterior margin. The eyelobes are strongly 

 elevated, short, and placed about half way from the front of the shield. 

 There is a minute tubercle on the axial line one-quarter from the back 

 of the head. The posterior marginal furrow is short and shallow, and 

 the occipital ring narrow and obscure. 



The movable cheek behind the eyelobe is nearly as wide as the D escr i p ti n of 

 glabella ; the front runs beneath the front margin of the middle piece in its parts. 

 a wide semi-doubleur that extends to the axial line. Posteriorly, it is t 



* Ibid. vol. i, p. 283, fig. 270. 



t Palaeozoic Fossils, vol. i, p. 92, fig. 83. 



J Euloma-Niobe Fauna, Christian '96, p. 47. 



