6i 



in contact with flat surfaces. The adhesive face of the egg is 

 soft, the other part is hard. 



Specimens without dorsal tubercles have been named Pty- 

 chozoon homalocephahim var. lionotum by Annandale. 



2. Ptychozoon horsfieldi (Gray). 



Pteropleura horsfieldii, Gray, Phil. Mag. (3) II 1827, p. 56. 

 Ptychozoon homalocephalum^ part., Boulenger, Cat. Liz. I 1885, p. 190. 

 Ptychozoon horsfieldii, F. Miiller, Verb. Ges. Basel X 1892, p. 209 pi. IV. 

 Ptychozoon horsfieldii. Flower, Proc. Zool. Soc. London 1896, p. 868. 

 Ptychozoon horsfieldii, v. Lidth de Jeude, Notes Leiden Mus. XXV 1905, p. 189. 



Head oviform, snout longer than the distance from the eye 

 to the ear-opening; forehead concave; ear-opening triangular. 

 Head with small equal granules. Rostral large, quadrangular; 

 nostril bordered by the rostral, the first labial and three nasals; 

 the upper pair of nasals separated by a larger scale; above 

 the labials two other large scales on each side. Eleven upper 

 and as many lower labials; mental small, triangular; four chin- 

 shields on each side, inner forming a long suture with its 

 fellow. Body depressed, with small granules above, no tuber- 

 cles; a broad membrane on the sides. Throat granular; ventral 

 scales larger, cycloid, imbricate. Male with 7 12 praeanal 

 pores in an angular series, separated by 8 scales from 9 14 

 femoral pores on each side. Tail depressed, annulate, the sides 

 bordered by a series of dermal lobes, the tip not ending in 

 a broad flap; the lobes directed somewhat obliquely; upper 

 caudal scales granular, lower transversely enlarged. Limbs 

 depressed; digits strong, entirely webbed; the fore limbs bor- 

 dered by a broad dermal expansion, the hind limbs on the 

 posterior side of the femur and on both of the tibia. 



Brown above with broad, lighter cross bands, edged with a 

 dark wavy line; a broad dark streak from the eye to the 

 shoulder, sometimes broken up into round spots. Tail with 

 dark and light bands. Lower parts yellowish, uniform or spot- 

 ted with brown. Length of head and body 80 mm.; tail 75 mm. 



Habitat: Borneo (Nanga Raun!, Sarawak!, Mt. Dulit!). 

 Penang (1900 feet); Singapore; Burma; Loo-Choo Islands. 



