28l 



I. Tribolonotus novae-guineae (Schleg.). 



Zonurus novae-guineae^ Schlegel, Tijdsch. Nat. Gesch. I'hys. 1 1834, p. 218. 

 Tribolonotus novae-gtdneae, Boulenger, Cat. Liz. Ill 1887, p. 365 (s. syn.). 



Head strongly separated from neck, with a straight posterior 

 border ending in six points. Eyelids scaly; tympanum as large 

 as the eye-opening, superficial. Shields of head strongly striated; 

 rostral small; four supraoculars; two pair of parietals, hind 

 pair largest and forming a suture behind the interparietal. 

 Six uoper labials, first very small, second long, third and 

 fourth bordering the orbit; five lower labials, first longest; 

 mental very small, followed by a large postmental; five chin- 

 shields on each side, gradually decreasing in size; first pair 

 as long as the postmental. Body slender, covered on the back, 

 from the neck to the sacrum with 11 transverse rows of large, 

 bony shields, each series composed of four spinose shields, the 

 outmost sharp and strongly curved. Between the shields the 

 body is covered with small, soft, keeled scales. Flanks with 

 small scales and scattered, larger trihedral tubercles. Throat 

 and belly covered with strongly keeled, imbricate scales. Prae- 

 anal scales strongly enlarged. Tail somewhat compressed, as 

 long as head and body, covered above with large spinose 

 shields, the spines pointing upwards, alternating with rows of 

 small keeled scales; below with transverse rows of strongly 

 keeled, imbricate scales. Limbs strong, the hind limb nearly 

 reaches the axilla; the fore limb covered with rather large, 

 strongly keeled scales, the hind limb with spinose scales; digits 

 roundish, short, with smooth lamellae below, those of the 

 basal part thicker. 



Dark brown above, banded with lighter; lower parts yellowish. 

 Length of head and body 80 mm.; tail 82 mm. 



Habitat: New Guinea (Fak Fak, Passim, Lobo, Andai, 

 Haas, Wendesi!, Ingsiim river!, Humboldt Bay!, Mosso, Ger- 

 maniabucht, Bukaua, Bongu, Astrolabe Bay!, Friedrich- 

 Wilhelmshafen, Torricelli Mts., Etna Bay!, Mimika river); 

 Valise Island. 



2. Tribolonotus gracilis de Rooy. 



Tribolonotus gracilis^ de Rooy, Nova Guinea Zool. V 1909, p. 381. 

 Tribolonotus novae-guineae^ Vogt, Sitz. ber. Ges. Naturf. Fr. Berlin I9ii,p. 415. 



Head as in the preceding species; first pair of chin-shields 



