38 Kept. 
IV, REPTILIA AND BATRACHIA. 
M. 0. Potter publishes a digest of a popular lecture on the metamor- 
phoses of the Frog; Nat, Hist. Tr. Northumb. xi, 1894, pp. 263-269. 
On the metamorphosis of the Frog’s mouth ; J. Liebert, Inaug. Diss., 
Leipzig, 1894, 8vo. 
On regeneration of the limbs in larvae ; Barfurth, Arch. Entwick- 
lungsmech. i, 1894, pp. 117-123, pi. vi. 
On the artificial production of double parts in larvae ; 0. Schultze, t. c. 
pp. 269-305, pis. xi & xii. 
On the development of the tarsus in Pelobates fuscus ; Chomiakoff, 
Bull. Soc. Moscou, 1894, pp. 351-357, pi. viii. 
On the hyo-branchial skeleton and its transformations; E. Gaupp, 
Morphol. Arbeit, iv, 1894, pp. 399-438, fig., 2 pis. 
On the transformation of the aortic arches in the Frog ; M. S. Jour- 
dain, C.R. Ac. Sci. cxix, 1894, pp. 98-100, and Ann. Nat. Hist. (6) 
xiv, 1894, pp. 234-236. 
On the development of the endothelium of the blood-vessels and 
blood-corpuscles of the Frog ; Nusbaum, Bull. Ac. Cracovie, 1894, 
pp. 230-234. 
On the formation of the embryo of the Frog ; T. H. Morgan, Anat. 
Anz. ix, 1894, pp. 697-705, figg. 
R. Assheton writes on the phenomenon of the fusion in the epiblastic 
layers, and on the growth in length of the embryo of the Frog ; 
Q. J. Micr. Sci. xxxvii, 1894, pp. 165-171 & 223-243, pis. xviii, xxiii, 
& xxiy. 
Cy totropism ” in early stages of the Frog-ovum ; W. Roux, Arch. Ent- 
wicklungsmech. i, 1894, pp. 43-68 & 161-202, pis. i-iii. 
On degenerescence of the ova in Rana esculenta ; Mingazzini, Atti Acc. 
Lincei (5) ccxci, 1894, Rend., pp. 459-467. 
On the influence of external conditions on the development of the 
Frog-ovum ; O. Hertwjg, SB. Ak. Berlin, 1894, pp. 111-117. 
On the influence of a low temperature on the development of the Frog- 
ovum; 0. Schultze, Anat. Anz. x, 1894, pp. 291-294. 
Experiments on the development of Frog-ova in salt water ; 0. Hert- 
wig, Arch. mikr. Anat. xliv, 1895, pp. 285-344, pis. xx-xxii. 
Physiological experiments on the action of Toad-poison on the blood and 
its colouring matter ; Pugliese, Arch. ital. Biol, xxii, 1894, 
pp. 79-88. 
PHANEROGLOSSA. 
RANIDiE. 
Rana , L., remarks on the North American species ; Werner, Jahresber. 
Yer. Magdeburg, 1894, pp. 123-136. R. esculenta, L., on a herma- 
phrodite specimen ; Mitropiianow, Protok. Obshch. Yarshav, y, 
1894, Nos. 3 & 4, p. 1, fig. : on a case of melanism ; Vaillant, 
Bull. Soc. zool. France, xx, 1895, p. 29. On hibridization of R. 
esculenta with#, awaits ; W- Gebhardt, Inaug. Diss., Breslau, 1894, 
