434 . DR. M. A. SMITH ON UEPTILES AND 



throat is ])igmented, and sufficiently differentiated, to entitle 

 the sacs to be called external. 



In general appearance R. nigrovittata very closely resembles 

 jK. mortenseni from S.E. Siam. H. mortenseni, however, has no 

 groove at all to the finger discs, grows to a larger size, and the 

 n\ale has internal vocal sacs. Adult males cannot be confused, 

 but immature specimens or females could be mistaken, li. mor- 

 tenseni appears to be confined to the Island of Chang. The 

 specimens identified by Boulenger as having been obtained in the 

 Karin Hills (N. Siam)j Monograph, No. 5 & 6, p. 136, should, I feel 

 sure, be referred to nigrovittata. The tadpole also, as originally 

 described by me under nigrovittata, should stand as correct. 



I give measurements of some specimens in the British Museum 

 which I have examined. 



>> s 



^^^ 





A.^.— ^ , A 



Snout to vent 49 50 49 52 42 44 54 46 56 



Head 19 19 17 18 14 16 18 16 18 



Width of head 18 19 16-5 17 14 15 18 17 18 



Snout 8 8 7 8 6 6-57 Qo 7 



Eye 5-5 5-5 6-5 6 4-55656 



Tympanum 4 4 4 4 3 2-5 4 3-5 4 



Arm '28 29 28 £8 27 28 30 23 32 



Leg 82 84 80 85 70 76 84 73 85 



Tibia 26 28 27 27 22 25 27 22 27 



Foot 26 28 25 25 21 22 27 22 26 



Bana sauteri Boulenger. 



Kec. Ind. Mus. xx. p. 143, June 1920. 

 Yar. JOHNSi, nov.* (PL II. fig. 1.) 



Eleven specimens of a frog from the Plateau differ sufficiently 

 from li. sauteri Boulenger, from Formosa, to be entitled to 

 racial distinction. I have compared them with types in the 

 British Museum, and separate them on the following grounds -.-r- 



More pointed snout, longer leg, tibio- tarsal articulation to well 

 beyond the snovit, very prominent glandular dorso-Jateral fold, 

 and smaller size. 



In other points also, Boulenger's description, di-awn up from 

 four females, shows small A'ariations, and I therefore describe my 

 specimens in detail. 



Vomerine teeth in oblique groups between the choanre and 

 extending beyond their posterior borders, as far from the choanee 

 as from each other, or a little farther. 



Head as long as, or a little longer than broad, depressed ; 

 snout obtusely pointed, projecting beyond the mouth, longer than 



* Named after Mr. Johns, British Consul in Saigon at the time of our visit, and 

 who was of the greatest assistance to us in arranging manj' details of our expedition. 



