BATRACHIAANOURA. 29 



OBSERV. Besides the species described below, the genus Leptodactyltu 

 will include Rana labyrin&ica of Spix, and likewise Rana typhonia, the 

 affinities of which were already known to Fitzinger himself. 



1. LEPTODACTTLUS OCELLATUS, Grd. 

 (Plate III, figs. 1-6.) 



CHAR. SPEC. Yomerine teeth disposed upon angular arches. Tongue 

 cordiform, free posteriorly upon one-third of its length, and slightly 

 emargiuated at both extremities. Toes with a rudimentary, basal, 

 and marginal membrane. Skin with indistinct longitudinal dorsal 

 folds ; otherwise, smooth. Greenish-brown on the head and back ; 

 yellowish-brown on the sides and legs, with series of black maculae. 

 A post-orbital vitta tapering to a point towards the axilla. Margin 

 of the jaws maculated with black and white. 



SYX. Rana ocdlata, Lixx. Mus. Adolph. Friedr. II, 39; Syst. Nat. ed. X m I, 

 1758, 211, et ed. XII s I, 356. GM. Linn. Syst, Nat. ed. XIIP III, 1793, 1052. 

 SCHX. Hist. Ainph. I, 1799, 116. SHAW, Gen. Zool. Ill, 1802, 103, PI. 34. BAUD. 

 Hist, Nat. Rain. Gren. Crap. 1803, 61, PI. xix ; Hist. Nat. Kept. VIII, 1804, 118. 

 MERR. Tent. Syst. Amph. 1820, 176. FITZ. N. Class. Kept, 1826, 64. GRAY. Delic. 

 Mus. Zool. Yratislav. Butr. 1829, 42. 



Leptodactylus serialfs, GRD. in Proc. Acad. Nat. Sci. Philad. VI, 1853, 421. 



OBSERY. We have not referred to all the synonyms of this species 

 as given in the " Erpetologie generale," since we are not satisfied of 

 their identity. In making the above selections, our purpose is to call 

 the attention upon this subject. 



DESCR. The head is elongated, longer than broad, depressed, and 

 when seen from above, ovoid in its outline ; the snout being perfectly 

 round. Its upper surface is even, slightly sloping. The phrenic 

 region is subconcave laterally ; the canthus rostralis being almost 

 level with the upper surface of the snout. The nostrils are much 

 nearer the margin of the upper jaw than the anterior rim of the eyes: 

 they are comparatively small and subcircular. The eyes are of 

 medium size, subcircular ; their diameter being equal to the distance 

 between them and the nostrils. The upper lid is quite smooth, very 

 thin upon its margin, and projecting considerably over the eyeball. 

 The width of the interocular space is smaller than the diameter of the 



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