. The Canadian naturalist and geologist. Natural history -- Periodicals. / 98 Fossiliferous RocTcs in Nova Scotia. posed in my paper. Mr. Honeyman has also apparently extended the Arisaig series downward by the discovery of fossils in the slates of Doctor's Brook, in which I have often searched in vain for such remains. I shall look with much interest for specimens from this place. Among the fossils kindly sent to me with the paper, are some throwing new light on species previously imperfectly known, and others that are new to Nova Scotian Geology. The following especially deserve Fig
. The Canadian naturalist and geologist. Natural history -- Periodicals. / 98 Fossiliferous RocTcs in Nova Scotia. posed in my paper. Mr. Honeyman has also apparently extended the Arisaig series downward by the discovery of fossils in the slates of Doctor's Brook, in which I have often searched in vain for such remains. I shall look with much interest for specimens from this place. Among the fossils kindly sent to me with the paper, are some throwing new light on species previously imperfectly known, and others that are new to Nova Scotian Geology. The following especially deserve Fig. 1. mm ^^mm H. Dawsoni. 1. Homcdonotus Dawsoni,—(Hall.) The caudal shield and portions of the articulations of the body, were the only parts known when the species was described by Prof. Hall. Mr. Honeyman now sends nearly perfect specimens of the head. It has the posterior border nearly straight, the glabella moderately prominent and slightly wider behind than be- fore. It descends abruptly in front, and the frontal margin, which is absent in the specimen figured, appears to have risen in front of the glabella and eyes, with equal abruptness. The eyes are large and prominent, and advance into a line with the front of the glabella. Some of Mr. Honeyman's specimens shew that the species attained to a considerable size, at least three times that indicated by the head now figured. (Fig. 1 above.) 2. Phaco2)S StoJcesii,—(Edwards.) A cast of a head referable to this species, for notice of which and the closely allied P' Orestes, (Billings.) see Mr Billing's paper in Canad. Nat. vol. 5, pp. 65 and 66. Of two other trilobites, fragments of which have been sent by Mr. Honeyman, one is according to Mr. Billings, a Proetus, the other a Dalmania, allied to D. socialis. 3. OrtJwceras exornatum, N. s. This very prettily marked species is circular in its cross section, moderately tapering and straight, with siphuncle slightly eccentric, and septa half a line to a line apart, in a specim
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