1861.] DAWSON REPTILES IN THE COAL, 7 



stinctly. They are half an inch in length, -with a stride of about 2 

 inches. On neighbouring layers were pits resembling rain-marks, 

 and trails or impressions of a kind which I have not before observed. 

 Tliey consist of rows of transverse depressions, about an inch in 

 length and ^ of an inch in breadth. Each trail consists of two of 

 these rows running parallel to each other, and about 6 inches apart. 

 Their direction curves abruptly, and they sometimes cross each other. 

 From their position they were probably produced by a land or 

 freshwater animal — possibly a large Crustacean or gigantic Annelide 

 or Myriapod. In size and general appearance they slightly resemble 

 the curious CVimacticlinltes of Sir AY. E. Logan, from the Potsdam 

 Sandstone of Canada. 



I have long looked in vain for remains of land-animals in any other 

 situation than the erect trees of the bed above referred to ; but on 

 my last visit I was much gratified by finding shells of Pu;pa vetusta 

 in a bed 1217 feet below the former, in the upper part of No. 8 of 

 my section, or about 15 feet below Coal No. 37 of Logan's section. 

 The bed in question is a grey and grepsh-blue under-clay, full of 

 Stigmarian rootlets, though without any coal or erect trees at its 

 surface. It is 7 feet thick, with sandstone above and below. The 

 shells occur very abundantly in a thickness of about two inches. 

 They have been imbedded entire ; but most of them have been crushed 

 and flattened by pressure. They occur in all stages of growth ; but 

 the most careful examination did not enable me to detect any new 

 species. With them were a few fragments of bone, probably repti- 

 lian. This discovery establishes the existence of Pupa vetusta in this 

 locality during the deposition of twenty-one coal-seams, and the 

 growth and burial of at least twenty forests ; and from the occur- 

 rence of numerous specimens at both extremes of this range, without 

 any other species, it would seem as if, for this locality at least, this 

 was the only representative of the shell-bearing Pulmonates. 



I append a list of the specimens forwarded to the Museum of the 

 Society, and which, with those formerly sent, constitute a complete 

 collection of the air-breathing animals hitherto recognized in the 

 Coal-measures of Nova Scotia. 



List of specimens of Reptiles, Sfc, from the Coal-formation of Nova 

 Scotia, accompanying this paper, 



1. Hylonomus Lyelli. A nearly complete skeleton, and the maxillary 



bone and teeth of another specimen. 



2. H. adedentatus. Maxillary bone, vertebrae, ribs, scales, and foot. 



3. H. Wymani. Lower jaw, vertebrae and other bones, and scales. 



4. Jaw of a lieptile, supposed to be new. 



5. Skin and dermal plates of Hylonomus. 



6. Dendrerpjeton Acadianum, Owen. A nearly complete skeleton. 



7. Pupa vetusta*. From a bed 1217 feet below that in which the 



species was originally recognized. 



* I observe that Professor Owen proposes the name " Dendropupa " (' Palaeon- 

 tologv,' 1800, p. 79) ; but I have retained P^tprt for the present, not being satisfied 



