890 MR. STAIS^LET S. FLOWER 0:y THE [NoV. 14, 



irregular dark brown vertical bars. Belly buff and transparent, 

 showing the coil o£ the intestines. Iris golden, with black cross 

 marks. 



Size. Largest specimen measured in total length 34-2.5 mm. ; 

 length o£ body 11*25 mm. ; width of body 7"75 mm. ; length of 

 tail 23 mm. ; depth of tail 5*5 mm. 



The recently transformed young measure from 9*5 to 11 mm. 

 from snout to vent. The smallest frog which had the yellow 

 vertebral line developed measured 13 mm. from snout to vent. 



8. Rana plioatella Stol. 



Baiia iMcatella, Stol. J. A. S. B. 1873, p. 116, pi. xi. fig. 1 ; 

 Blgr. Cat. Batr. Sal. p. 26. 



Rana plicatella was described by Stoliczka from a single specimen 

 (apparently), which had been at least two years in spirits ; its 

 locality was either Penang or Province Wellesley : unfortunately 

 he does not mention either the sex or size of the type specimen. 

 A frog caught by me in Penang I refer to this species, as it 

 entirely agrees with his description and figure, except in the 

 following points : — 1st, a larger head; 2nd, the presence of a knob- 

 shaped prominence on the occiput ; 3rd, the upper surface of the 

 body has about 12 longitudinal folds instead of 8 ; 4th, differences 

 of colour, mostly attributable to Stoliczka's being a spirit-specimen, 

 except that mine has 5 transverse dark bands on the femur instead 

 of 6, the " horseshoe-shaped yellow mark, open below, round the 

 anus" is absent and a pale vertebral line is present. The 3rd and 

 4th points may well be individual variations, while the 1st and 2nd 

 may be secondaiy sexual characteristics, my specimen being an 

 adult male. 



This frog resembles Rana laticeps Blgr., known from India and 

 Malacca, and Rana dorice Blgr., from Burma, in many respects ; 

 but differs from the former in, 1st, the distinct and larger 

 tympanum ; 2nd, the less broadly webbed toes : and from both in, 

 1st, the distinct longitudinal glandular folds on the back ; 2nd, 

 the prominence on the occiput. 



Description. Vomerine teeth on two straight ridges, commencing 

 on a line with hinder edge of choange and running obliquely back 

 from them, converging behind so as to meet, if prolonged, in an 

 angle rather greater than a right angle. Lower jaw with two 

 fang-like bony prominences in front. Head very large ; snout 

 bluntly pointed ; canthus rostralis distinct, rounded ; loreal region 

 slightly concave ; occiput swollen at the sides, interorbital region 

 convex, the swelling produced posteriorly and ending in a knob- 

 shaped prominence 1*5 ram. in height; in life this feature is very 

 prominent and at once attracts the attention. Nostrils lateral, 

 somewhat directed upwards, rather nearer the end of the snout 

 than the eye, their distance apart is slightly greater than the inter- 

 orbital space. The breadth across the gape is much greater than 

 the distance from angle of mouth to end of snout. Eye prominent. 

 The interorbital space is much greater than the width of the upper 



