Mr. G. A. Boulenger on a new Frog from Burma. 141 
have been produced from similar causes. A comparison of 
figs. d and } almost demands this conclusion. Beyond evi- 
dence gained from an examination of the surface of the fossil 
there is none; but as all the characters exhibited on the outer 
surface of recent Hgutsetwm occur on the fossils, 1 think I am 
quite justified in placing the Yorkshire specimens in the 
genus Lquisetum. 
It gives me pleasure to name this species after Mr. Heming- 
way, to whom [am much indebted for many interesting fossil 
plants from the Yorkshire Coal-field. 
Before concluding these notes, I may add that the Hippu- 
rites gigantea, L. & H.*, from the Lower Coal-measures, 
Jarrow Colliery, of which the type is preserved in the Hutton 
Collection, and which MM. Renault and Zeiller thought 
might possibly belong to the genus Equitsetum, is a portion 
of a stem of Calamitina (probably Calamitina varians, 
var. ¢nsignis, Weiss), and has no very close affinity with the 
genus Hquisetum. I have examined the type, and the leaves 
appear to spring from the node, not as teeth of a sheath, as 
represented on their plate, but as free and independent 
organs placed close together f. 
“Equisetum Monyt, R. & Z., came from the Upper Coal- 
measures, whereas Lguisetum Hemingway? originates from 
the Middle Coal-measures, 
Loc. Monckton Main Colliery, near Barnsley, and Woolley 
Colliery, Darton, near Barnsley, Yorkshire. 
Hor. Shale over the Barnsley Thick Coal, Middle Coal- 
measures, 
XX.—Deseription of a new Frog from Burma. 
By G. A. BOULENGER. 
[Plate [X.]} 
Rana Oatestv. 
Vomerine teeth in two strong oblique series between the 
choane, their outer extremities nearly touching the anterior 
corners of the latter. Head depressed, longer than broad by 
the distance between end of snout and nostrils ; snout long, 
pointed, and projecting; canthus rostralis obtuse ; loreal 
* © Fossil Flora,’ vol. ii. pl. exiv. 
t+ See Proc, Roy, Phys, Soe. vol. x. p. 370. 
