82 THE CAMBRIAN. [bull. 81. 



(p. 21), Conocoryphe tcalcotti (p. 30). The subgenus Salteria was pro- 

 posed by the author to include the Conocephalites bailey i 1 of Hartt. 



All of the species were figured and described, with the exception of 

 Conocoryphe tcalcotti. This included figures of the three species of 

 Paradoxides, P. lamellatus Hartt, P. acadicus Matthew, and P. eteminicus 

 Matthew. 



Some of the results of Mr. G. F. Matthew's studies are given in two 

 papers read before the British Association for the Advancement of Sci- 

 ence at the Montreal meeting in 1884. In one he refers to the geolog- 

 ical age of the Acadian fauna, and correlates it with the fauna of the 

 St. John group and that of the Solva group of Wales. In the second] 

 is given a description of the development of Ctenocephalus matthewi and; 

 other species of the genus Conocoryphe. 2 



In Mr. Matthew's second memoir on the fauna of the St. John group, 3 

 presented to the Koyal Society of Canada in 1884, additional notes are 

 given of the Paradoxides acadicus and P. lamellatus. He proposes the 

 name Paradoxides micmac for a large species, which he thinks is prob. 

 ably the one figured in Acadian Geology. 4 The original species to 

 which Mr. Hartt intended to apply the name is unknown. The Cono- 

 cephalites matthewi of Hartt is referred to the genus Ctenocephalus oq 

 Corda. A detailed description is given of the species, and also of tin 

 various stages of its growth, as found in the St. John slates. Conocory- 

 phe baileyi, C. elegans, and C. walcotti are described and figured. In the 

 description of the plate 5 the subgeueric name Hartella is placed after 

 Ctenocephalus and Bailiella after Conocoryphe. 



In 1885 Obolella transversa Hartt was referred by Mr. C. D. Walcott 

 to the new genus Linnarssonia, together with the closely allied Meue- 

 vian species, Obolella sagittalis. 6 



In a paper read before the Natural History Society of New Bruns- 

 wick in 1885, Mr. G. F. Matthew stated 7 he had found some Pteropods 

 that appeared to have several distinct septa at the base of the tube. 

 He sent them to Prof. Hyatt, who wrote that the aspect of the siphon 

 is due to the compression of the sharper against the flatter side. The 

 form of the sutures favors this impression. "These fossils with their 

 distinct septa are startlingly similar to certain forms of Nautiloidea, 

 but there is no siphon. They, however, confirm Yon Jheruig's and my 

 opinion that the Orthoceratites and Pteropods have had a common, but 

 as yet undiscovered, ancestor in ancient times." 



1 Op. cit,, pp. 31, 32. 



2 The geological age of the Acadian fauna. The primitive Conocoryphean. British Association 

 Hep., 54th meeting, 1834, pp. 742-743. The geologic age of Acadian fauna. Geol. Mag., new ser., decade I 

 3, vol.1, 1884, pp. 470-471. 



3 Illustrations of the fauna of the St. John group, continued; on the Conocoryphea, with further 

 marks on Paradoxides. Royal Soc. Canada, Trans, and Proc, vol. 2, sec. 4, 1885, pp. 99-124. 



4 Op.cit.,p. 101. «Op.cit.,p.l24. 



Taleontologic Notes. Am. Jour. Sci., 3d ser., vol. 29, 1885, p. 115. 



7 An outline of recent discoveries in the St. John group. New Brunswick Nat. Hist. Soc. Bull., No. 4, 

 1885, p. 102. 



