PAPERS READ. 



ON A DEVONIAN FOSSIL ALLIED TO WORTHENIA 



(DE KONINCK) FROM NEW SOUTH WALES. 



Plate IX., Figs. 1 and 2. 



By F. Ratte, Eng. Arts and Manuf., Paris. 



This note accompanies the drawings of a probably new fossil 

 from the Devonian limestone of New South Wales. 



It has been found among a number of fossils from the Murrum- 

 bidgee limestone, which were collected in 1881, by Mr. Chas. 

 Jenkins, author of a note on the Geology of Yass Plains. (1) 



Among some fossil Gasteropods, such as Loxonema anglicum, 

 Euomjjhalus Bigshyi, Murcldsonia Verneuiliana, M. turris, which 

 occur, together with a few corals, Camites, Billingsia, &c., described 

 by Prof, de Koninck as Devonian, there are some undescribed 

 Gasteropods. All these fossils are silicified, showing themselves in 

 relief on the weathered surface of the limestone. One of them 

 was obtained in an acceptable condition by dissolving the most part 

 of the limestone in hydrochloric acid. 



Worthenia'? (De Koninck .) Sp. nov. 



This Gasteropod is interesting from the fact of its close relation 

 with a new genus i-ecently made out of Pleurotomaria and other 

 genera, by Prof, de Koninck. (2) 



This paleontologist acknowledges, in the carboniferous limestone 

 of Belgium, eleven genera in the family HcdiotidcB. Besides the 

 species maintained in the old genera Polytremaria, Murchisonia, 

 Ptychomj)halus and Porcellia, he creates seven new genera out of 

 some Turbo, Trochus, Pleurotomaria, Murchisonia, &c. These 

 genera are Gosseletia, Worthenia, Baylea, Mourlonia, Agnesia, 

 Rhineoderma and Luciella. 



One of them, the genus Mourlonia, has an extensive synonymy 

 being formed out of five genera, including Helix and Euomphalus, 



(1) Explor. of the Caves and Rivers of N.S.W., 1882, and Proc. Lin. 

 Soc, N.S.W., 1879, pp. 21 and 216. 



(2) L. G. de Koninck. Fauna du Calc. Carb. de la Belg., 1883, 4th Part, 

 p. 64. 



