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 18 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- s jd e o f the femur and on both of the 

 locephalum (Crev.). Fore ^ b fa ^ dermal ^ j on 



limb X 2. * * 



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. /), 



