60 



FAMILY UNCERTAIN. 

 * LEPTERPETUM DO BBS I. 



Lepterpeton dobbsi, Huxley^ Trans. R. I. Acad., vol. XXIV, 

 p. 199 (1867). 



a. Block showing imperfect skeleton apparently referable to a 

 large individual of this species ; from Jarrow Colliery, Kilkenny. 



Geological Survey Collection. 



FAMILY DOLICHOSOMATID^. 



* DOLICHOSOMA EMERSONI. 



Huxley, Trans. R. I. Acad., vol. XXIV, p. 366 (1867). 



From the Coal Measures of Jarrow, Kilkenny. 

 a. Slab showing the greater portion of two skeletons, in a bad 

 state of preservation. Presented by J, T. Butler, Esq. 



* DOLICHOSOMA HUXLEY/, n. sp. 



Much larger than Z>. emersoni, having a length of about 20 

 inches, and thus approximating to D. longissimum of the Lower 

 Permian of Bohemia, to which it was probably nearly allied. 

 a. Slab with the impression of the skeleton, wanting the posterior 

 extremity ; from the Coal Measures of Jarrow Colliery, Co. Kil- 

 kenny. Type. The vertebrae have the elongated form character- 

 istic of Dolichosoma, as distinct from Ophiderpetum ; and there 

 are no traces of scutes. 



* OPHIDERPETUM BROWNRIGGL 



Ophiderpeton brownriggi, Huxley, Trans. R. I. Acad., vol. 

 XXIV, p. 364 (1867). 



From the Coal Measures of Jarrow Colliery. Co. Kilkenny. 



a. Slab showing skeleton, imperfect posteriorly, and in a bad 

 state of preservation. Presented by W. S. Keogh, Esq. 



b. Slab with skeleton of a rather smaller individual. 



Geological Survey Collection. 



