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Show 890 MR. STANLEY S. FLOWER ON THE [Nov. 14, irregular dark brown vertical bars. Belly buff and transparent, showing the coil of the intestines. Iris golden, with black cross marks. Size. Largest specimen measured in total length 34*25 m m . ; length of body 11*25 m m . ; width of body 7*75 m m . ; length of tail 23 m m . * depth of tail 5*5 m m . The recently transformed young measure from 9*5 to 11 m m . from snout to vent. The smallest frog which had the yellow vertebral line developed measured 13 m m . from snout to vent. 8. RANA PLICATELLA Stol. Rana plicatella, Stol. J. A. S. B. 1873, p. 116, pl. 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 m e 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 secondary sexual characteristics, m y 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 choanal and runniug 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 m m . in height; iu 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 interorbital 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 |