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REPORT OF THE PAL^ONTOLOGICAL BRANCH FOR THE 



SEASON OF 1882. 



To the Council of the Ottaioa Field Naturalists' Club : 



The first excursion of the Club last season to the Laurentian Moun- 

 tains at Chelsea of course afforded no opportunities for collecting- 

 fossils. At the DesChenes Rapids, where the second excursion was held, 

 the sandstones of the Chazy formation proved very unfossiliferous, but 

 by careful search Mr. H. M. Ami detected some specimens of Orthis 

 imperator, Billings, and of the characteristic Khynchonella p^ewa, Hall. 

 The visit to Brigham's fjuarries, at Hull, on the 21st October, was 

 made too late in the day, and too late in the season, to permit of full 

 justice being done to this long known and favorite locality for collectors. 

 These quarries are remarkable for the number and variety of the 

 fossils found in them, on the weathered surfaces of slabs of Trenton 

 limestone, and are specially rich in crinoids and monticuliporids. Stems 

 of Ghjptocrinus more than eight feet in length were observed in one 

 part of the quarry, and fine examples of Glyptocrinus ramulosus, 

 Billings, showing the heads and pinnulaj in a fine state of preservation, 

 were also collected. Among other choice specimens obtained by 

 members of the Club was a slab, showing a good exampleof the head and 

 column of Dendwerinus aculidactylus, Billings, surrounded by young 

 Glyptocrini, both in an excellent state of preservation. The following 

 is a list of the species collected on this particular occasion : 

 Protozoa. Stromatocerium rugosum. Hall. 



CRmoiDEA. Glyptocrinus ramulosus, Billings, and G. decadactylus. 

 Hall; Dendrocrinus acutidactylus, Billings; Heterocrinus sub- 

 crassus, Meek & Worthen. 

 PoLYZOA. Arthoclema pulchellum, Billings ; Sfcictopora acuta, Hall,,and 

 Ptilodictya falciformis, Nicholson ; Prasopora Selwynii, Nicholson ; 

 Monotrypella Trentonensis, Nicholson. 

 Brac'HIOPoda. Rhynchonella capax, Conrad, var. increbescens, Hall, 

 and R, recurvirostra. Hall ; Orthis testudinaria, Dalman ; 

 Strophomena alternata, Conrad ; Streptorhynchus filitextus. Hall ; 

 Leptsena sericea, Sowerby. 



Lamellibraxchiata. Ctenodonta nasuta, Hall. 

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