260 Canadian Record of Science. 



Paradoxides rugulosus, var c. f. P. Eteminicus. 



Conocoryphe coronata, var c. f. Ctenocephalus Matthewi. 



Levy i c. f. Conocoryphe Baileyi. 



Heberti c. f. Conocoryphe Walcotti. 



Rouayrouxi c. f. Solenopleura Robbii. 



Agnostus Sallesi c. f. Agnostus vir. 



Trochocystites Barrandei c. f. Eocystites primaevus. 



Of Conocoryphe Heberti it is said that the dorsal suture is 

 not visible, but it probably has a suture similar to the other 

 Conocoryphes, and not to Otenocephalus as the figures would 

 lead one to suppose. 



Conocoryphe Rouayrouxi is a Solenopleura by its dorsal 

 suture, inflated fixed cheek and punctate surface; the eye- 

 lobe is more posterior than in S. Robbii, but otherwise it re- 

 sembles this species. 



Agnostus Sallesi is a species of the section "Limbati " of 

 Tullberg. In the Acadian region this section predominates 

 very decidedly over the section " Longifrontes " at this 

 horizon (Div. 1 c, 2) there being of this latter section in the 

 St. John group, only the rare A. partitus. This seems also 

 to be the case in Sweden, for although Dr. Brogger and 

 others have referred A. gibbus to the "Exsulens Kalk " and 

 A. atavus 1 (both Longifrontes) to the Holmia beds ; they 

 are apparently scarce in these lower beds. A. Sallesi differs 

 from all the Scandinavian and Acadian " Limbati" in its 

 pecular first lobe of the pygidium ; but it is Limbatus, and 

 therefore of the section most common at this horizon. 



In the preceding table I have compared a Trochocystites 

 found by M. Bergeron with Eocystites primaevus of Acadia : 

 for although we have not yet found examples of the latter 

 species sufficiently complete to determine its genus, the 

 plates which have so far been recovered are of such a 

 form as to make it probable that it will prove to be a 

 Trochocystites. 



The shales of Montaigne Noire containing this Para- 

 doxides fauna, are succeeded by a group of sandstones and 

 shales of no great thickness, at the top of which the Arenig . 



1 In Lindstrom's catalogue of the fossil faunas of Sweden the 

 infra position of this species is recorded as doubtful. (See page 2.) 



