1920.] G. A. Boui,ENGER : Frogs of the Genus Rana. 169 



leptoglossa. Measurements of two of them are given above, 

 columns 11 and 12. The only difference I can detect between 

 them and the more northern specimens on which R. alticola is 

 founded is the presence of a light vertical bar between the eye 

 and the t^^mpanum, to which Dr. Annandale has drawn attention. 



[This frog, to judge from the prevalence of the tadpoles in 

 spring, is common round Shillong, but the adult conceals itself at 

 this season even in rainy weather and I have never succeeded in 

 finding a specimen. In March and April the tadpoles, which are 

 gregarious, are to be seen in every pool with a muddy bottom in 

 the larger streams in the neighbourhood of the station. The}^ are 

 diurnal in habits and largely carnivorous. In the evening they 

 conceal themselves, but as soon as the sun is w^ell up they may be 

 seen to emerge from under the banks and to feed on insect larvae 

 in the mud. Though very conspicuous in lateral view, from above 

 they appear entirely dark, of a deep olivaceous shade, and the large 

 ocellus on the tail is onl}^ visible in lateral view. In life it is deep 

 orange yellow and black. The parotoid glands pour out a profuse 

 milk}' secretion when the tadpole is irritated. 



The tadpole with more than one ocellus on the tail is, I now 

 believe, distinct. In large numbers examined at Shillong none 

 were found with more than one ocellus, whereas in larval speci- 

 mens of this type from Burma at least two such markings are 

 always present on the tail. Perhaps these Burmese tadpoles are 

 those of R. nicohariensis. There must surely have been some con- 

 fusion about those specimens in the Indian Museum labelled as 

 being from the Pamirs. N . A .] 



86. Rana celebensis. 



Rana celebensis, Peters, Mon. Berl. Ac. 1872, p. 585 ; van Kampen, in At. 

 Weber, Zool. Ergebn. Rets. Nied. O.-Ind. IV, p. 395 (1907). 



Vomerine teeth in short series extending a little beyond the 

 level of the posterior borders of the choanae. 



Head longer than broad; snout rounded, projecting beyond 

 the mouth, as long as the orbit; canthus rostralis strong; loreal 

 region nearly vertical, concave ; nostril nearer the tip of the snout 

 than the eye ; interorbital space as broad as the upper eyelid ; 

 tympanum very distinct, nearly as large as the eye. 



Fingers with small but very distinct discs, first longer than 

 the second; subarticular tubercles well developed. 



The tibio-tarsal articulation reaches the nostril ; tibia more 

 than "I length of head and body, shorter than the fore limb. 



Toes with discs similar to those of the fingers, webbed to the 

 discs of the third and fifth, two phalanges of fourth free ; no tarsal 

 fold; inner metatarsal tubercle oval, outer round and not much 

 smaller. 



Skin of upper parts finely granulate, with or without large 

 warts on the back; a broad glandular dorso-lateral fold, as in 

 R. crythrcBa. Lower parts smooth. 



