336 MR. HERBERT BOLTON ON [Aug. I9II, 



with its distinct locustid affinities. It is interesting to note that 

 Dr. Handlirsch has observed that in one of the forms of this 

 group the hind legs were developed for jumping, precisely as in 

 locustids. 



Horizon and locality. — 637 feet below the Bedminster 

 Great Vein and 137 feet above the Ashton Great Vein, Lower 

 Coal-Measures, South Liberty Colliery, Bristol. 



PISCES. 



Ccelacanthtts cf. elegans Newberry. 



Horizon and locality. — Micaceous shale of the Upper Series, 

 Upper Coal-Measures, Dunkerton Colliery. 



Strepsodus sauroides (Binney). 



Impression of a scale, in dark-blue shale seamed by brown earthy 

 ironstone-bands. 



Horizon and locality. — Dark-blue shale near the Rock or 

 Badger Vein, Second Series of the Upper Coal-Measures, Writhlington 

 Colliery, Radstock. 



Megalichthys prGM2ETis Traquair. 



Fragment of dentary in Lower Coal-Measure Lingula Shale. 

 Hanham Colliery. 



Coprolites. 



Several small coprolites occur in the Anthracomya -phillipsi 

 Shale at Easton Colliery. 



INCERT^E SEDIS. 



Pal^oxyris helicteroides (Morris). (PI. XXVII, figs. 20 & 21.) 



One example of this still problematic form was found at a depth 

 of 279 feet below the Bedminster Great Vein. It presents the 

 usual fusiform body, and is broken off a little above the point at 

 which it is joined by the pedicle. The beak is almost intact, 

 but the segments, instead of running parallel and longitudinally 

 to the apex as described by Dr. Moysey, 1 continue the spiral 

 twists seen upon the body. The specimen is either more attenuated 

 than usual, or partly concealed along the sides. The total length 

 is 25 millimetres and the maximum breadth 4 mm., the beak being 

 about 12 mm. long. The alternation of broad and narrow bands 

 characteristic of P. helicteroides is clearly marked, and is continued 

 upon the beak, where the bands lose most but not all of their spiral 

 character. 



The whole question of Palceoxyris and its affinities has been so 

 recently considered by Dr. Moysey (o_p. cit.) that nothing need be 

 added here, beyond the record of its presence in the Lower Coal- 

 Measures of the Bristol Coalfield 



1 ' On Palceoxyris & other allied Fossils from the Derbyshire & Nottingham 

 shire Coalfield' Q. J. G. S. vol. lxvi (1910) p. 331. 



