61 



Pygidium with two large and long flat spines directed backwards, be- 

 tween which are four very short ones. It seems to consist of three segments, 

 the first or anterior of which has its pleuras extended backwards to form 

 the long outer pair of spines, while the other two terminate in the four short 

 ones. East Point ; Div. 3, A. G. J. Richardson. 



Fig. 20. 



Fig. 20. — Cheirurus nuperus. Glabella and pygidium. The specimens 

 from which these two figures were taken are on the same piece of stone 

 within six inches of each other and there seems, thus, to be little doubt 

 that they belong to the same individual. 



C. PLEUREXANTHEMUrf, Green. — Junction Clifi"; Div. 1, A. G. Also 

 in H. R. 



Genus Phacops, Emmrich. 



P. Orestes, B., op. cit., vol. iv, p. 65. — East Point: Div. 3, A. G. 

 Occurs also on the Chatte River in Gaspe in the same horizon. 



Genus Dalmantes, Emmrich. 



D. MACROURA ?, Angelin. — Junction Cliff; Div. 1, A. G. The eye is 

 rather smaller and closer to the glabella and the pygidium shorter and 

 more rounded at the apex. It is evident however that this is a variable 

 species. The English form is intermediate between the Swedish and Cana- 

 dian. Salter, in the " Memoirs of the Geo. Surv. G. B." proposed to 

 name the former B. affinis, but now thinks it identical with I), maci'oura. * 

 It may be that all these will yet be classified as three distinct but closely 

 aUied species. In that case ours might be called D. Anticostienais. The 

 arrangement would then be D. macroura, Angelin, (Swedish) ; D. affinis, 

 Salter (English) ; D. Anticostiensis, Billings (Canadian). In the eye of 

 the latter the vertical rows of lenses are the most conspicuous, the oblique 

 series not being perceptible without close examination. In the Swedish 

 specimen figured by Angelin, the oblique arrangement is the most distinct 

 and the vertical obscure. . 



Genus encrinurus, Emmrich. 



E. MULTISEGMENTATUS, Portlock. — Junction Cliff; Div. 1, A. G. 



E. PUNCTATUS, Wahlenberg. — East Point and the Jumpers ; Div. 3, 4, 

 A. G. Specimens both with and without the caudal mucro occur together 

 at that locahty. 



* Salter. — "British Trilobites," Pal. Soc, 1864, p. 37. 



