6o 



to the ear-opening, one time and a half the diameter of the orbit; 

 forehead concave; ear-opening large, roundish. A small lobe 

 on the side of the head, below the ear-opening, from the angle 

 of. the mouth to the neck, covered with large scales. Head 

 covered with small granular scales; rostral very large, quadrang- 

 ular; two pair of supranasals, the one next to the rostral 

 larger; nostril bordered by the rostral, the first labial, two 

 supranasals and two small scales. Ten to fifteen upper and ten 

 to twelve lower labials; mental small, triangular; three or four 

 small chin-shields on each side, inner long, forming a long 

 suture with its fellow. Body much depressed, covered with 

 small granular scales and enlarged tubercles. Throat covered 

 with small scales, belly with larger ones. Male with i8 — 28 

 praeanal pores in a curved line. Tail annulate, long, strongly 

 depressed, the sides bordered by a series of rounded dermal lobes, 



ending in a broad rounded flap; covered 

 above with small granular scales and 

 transverse series of pointed tubercles, 

 below, with imbricate scales. Limbs 

 strong, depressed; digits strong, web- 

 bed to the tips of the dilated parts (fig. 

 37); the fore limbs bordered on each 

 side, the hind limbs on the posterior 

 Fig. 37. Ptychozoon homa- gj^e of the femur and on both of the 



locephaluin (Crev.). Fore .-i • u u j j i 



y i., tibia by a broad dermal expansion. 



Greyish or reddish-brown above 

 with transverse undulated dark brown bands; a dark brown 

 streak from the eye to the first dorsal band. Lower parts 

 yellowish. Length of head and body 98 mm.; tail 92 mm. 



Habitat: Simalur!; Nias!; Mentawei Islands (Saibi!); En- 

 gano; Sumatra (Deli!, Langkat, Battak Highlands, 800 — 1000 

 M., Indragiri, Agam, Alahan Pandjang); Java (Gadok, Buiten- 

 zorg!, Preanger, Sukabumi!, Gunung Ungaran!, Willis Mts., 

 5000 feet, Tengger Mts., 1200 M.); Borneo (Barang, Pamabo 

 range, Mt. Dulit, Pankalan ampat, Kuching, Balingeau, Sara- 

 wak). — Malacca; Burma; Nicobars; Andamans?. 



Young specimens have the same coloration, tail with dark 

 brown cross bands. The female deposits two eggs at a time 

 which are 14 mm. in diameter. They are greyish-white, semi- 

 globular and attached to the bark of a tree (Urostigma rumphii) 

 with a flat basis. Two eggs are always found together (fig. 2. /), 



