146 NELLY DE ROOY. REPTILES. 



Rain Island 1909, 1 spec. 

 Lorentz River 1909, 1 spec. 

 Went Mts. 1909, 1 spec. 

 Helhvig Mts. 1909, 3 spec. 



Common ail over New Guinea; besides occurring in Waigeu, Ternate, Buru, Aru and 

 Fergusson Islands. 



36. Lygosoma tropidolepis BIgr. 



Boulenger, Transact. Zool. Soc. XX 1914, p. 260, pi. 29 rïg. 4. 

 de Roov, Indo-Austr. Rept. I 1915, p. 258. 



Bivak Island 1912, 5 spec. 

 Kloof Camp 1912, 4 spec. 

 Beaufort River 191 2, 1 spec. 



Section Emoa. Snout moderate, obtusely pointed; lower eyelid with a transparent disk; 

 ear-opening round, a little larger than the palpebral disk, with small lobules anteriorly or ail 

 round. Nostril between three shields, a nasal, a postnasal and a supranasal; frontonasal much 

 more broad than long, broadly in contact with the rostral, narrowly with the frontal; latter 

 a little longer than the frontoparietal, in contact with the two anterior supraoculars; four 

 supraoculars; seven or eight supraciliaries; frontoparietal single and fused with the inter- 

 parietal ; parietals in contact behind the latter; a pair of nuchals and one or two pair of 

 temporals; four or five labials before the large subocular. Body with 34 or 36 scales round 

 the middle, dorsals and laterals with two to five, generally three, strong, sharp keels ; dorsal 

 scales largest, latéral smallest; the distance between the tip of the snout and the fore limb 

 is contained one time to one time and one fourth in that between axilla and groin ; prae- 

 anals not enlarged. Tail one time and two thirds the length of head and body. Limbs strong, 

 the hind limb reaches the axilla or the shoulder; digits long, compressed at the end; fourth 

 toe with 34 — 40 smooth lamellae below. 



Dark brown above, iridescent, with small black spots; sometimes an indistinct light 

 dorso-lateral streak; sides with whitish, black-edged spots; labials each with a small, dark, 

 vertical stripe. Lower parts greenish-whitc. The largest spécimen in this collection measures 

 70 + 117 mm. 



Only known from Dutch South New Guinea: Mimika, Stekwa, Utakwa and Lorentz rivers. 



37- Lygosoma pallidiceps (de Vis). 



de Vis, Proc. Linn. Soc. N. S. Wales (2) Y 1890, p. 497. 

 de Rooy, Indo-Austr. Rept. I 1915, p. 259. 



Kloof Camp 1912, 4 spec. 



Four spécimens of Lygosoma could be identified as L. pallidiceps (de Vis), a species 

 which was known from the St. Joseph River, British New Guinea. 



Section Emoa. Snout pyramidal, slightly depressed ; lower eyelid with a transparent 

 disk; ear-opening oval, larger than the palpebral disk, with two or three small lobules ante- 

 riorly. Nostril between three small shields, a nasal, a postnasal and a supranasal; frontonasal 

 more broad than long, broadly in contact with the rostral, narrowly with the frontal; latter 



