328 



PALEONTOLOGY. 



however, no carinse ; the cell-mouths are furnished with radiating teeth ; 

 and a second aperture, the diameter of which is about one third of that 

 of the cell-mouth, is situated close to one end of each cell. The non- 

 poriferous side of the frond is smooth or finely tuberculated. The 

 species is found in the Limestone-shales of Capelrig and Hairmyres, 

 East Kilbride, West of Scotland. Also describes a form closely resem- 

 bling the preceding in its denticulated cell- aperture and the existence 

 of a second smaller opening near the cell-mouth, but which is not 

 fenestrated, and appears to have the generic characters of Glauconome, 

 It is named G. stellij^ora, and is found in the Limestone-shales of the 

 West of Scotland. H. A. N. 



YoxJNO, Prof. John, and John Youno. On Palceocoryne and other 

 Polyzoal Appendages. Quart. Journ. Geol. Soc. vol. xxx. pp. 684 

 -687, pis. xl.-xliii. 



Express the opinion that the genus Palceocoryne, founded by Prof. 

 Duncan and Mr. Jenkins, and believed by them to belong to the Corynida, 

 is really based upon peculiar sterile processes, which are occasionally 

 developed upon the fronds of Fenestella, Polypora, and other members 

 of the Fenestellidce. They also believe that different forms of Polyzoa 

 produce different kinds of Palceocoryne, and that the structures so called 

 are developed chiefly from the poriferous face of the frond. H. A. N. 



. On a New Genus of Carboniferous Polyzoa. Ann. Nat. 



Hist. ser. 4, vol. xiii. pp. 335-339, pi. xvi. B. 



Examine the generic value and affinities of the genus Ceriopora^ with 

 special reference to the Carboniferous form Millepora gracilis ( = Cerio- 

 pora gracilis^ Morris). This species they conclude to be entitled to 

 separation from Ceriopora^ however this genus be ultimately defined, 

 on account of their discovery that the stem consists of a hollow, calca- 

 reous axial tube, round which the cells are ranged. They propose, 

 therefore, the name of Bhahdomeson gracile for this form, the full defi- 

 nition of the genus Rhahdomeson being reserved until they have carried 

 out more complete investigations into allied species. B. gracile occurs 

 in the Carboniferous Limestones and shales of the West of Scotland. 



H. A. N. 



. Note on the Occurrence of Polypora tuherculata, Prout, 



in Scotland. Geol. Mag. dec. 2, vol. i. pp. 258, 259. 



Have identified Polypora tuherculata, as occurring commonly in the 

 Carboniferous rocks of the West of Scotland. Prout's description is 

 quoted at length ; and some additional characters are mentioned. A 

 note is added on the occurrence of a peculiar incrusting layer of mineral 

 matter, sometimes covering the stems and fronds of various species of 

 Polyzoa in the Carboniferous rocks of Lanarkshire, and concluded to 

 consist of sulphate of lime, perhaps having some relation to the Hemi- 

 trypa of Phillips. H. A. JS". 



YoiTNG, John. Notes accompanying Two Slides of Carboniferous 

 Polyzoa from the Fossiliferous Shales of Hairmyres, near East 

 Kilbride. Trans. Edin. Geol. Soc. vol. ii. pt. iii. pp. 400-402. 



