General characters the same; snout rounded; poison-fangs followed, after a wide interspace, by 6 small grooved teeth; anterior mandibular teeth strongly developed (fig. 43). Head and eyes small; pupils round or vertically subelliptic; nostrils pierced between 2 nasal shields. Body cylindrical; scales smooth, in 17 rows; tail short; subcaudals in 2 rows. _G. tristis._--Ventral scales 165-179; subcaudals 38-52. Colour dark brown; occiput often yellowish, or pale reddish-brown; belly yellow. Total length, 900 millimetres; tail 125. _Habitat_: North-eastern Australia and South-eastern New Guinea. (c) =Pseudelaps.= Maxillaries extending forwards as far as the palatines, with a pair of large grooved poison-fangs, and, after a wide interval, 8-12 small grooved teeth. The anterior mandibular teeth are of large size, almost like fangs. Head hardly distinct from the neck; eyes small, with vertically elliptic pupils. Body cylindrical; scales smooth, in 15-17 rows. Tail moderate or short; subcaudal scales in 2 rows. (1) _P. muelleri._--Scales in 15 rows. Nasal shield divided, in contact with the præocular; 2 + 2 temporals; 139-176 ventral scales; 21-35 subcaudals. Colour brown, with a light vertebral line; a more or less distinct dark, light-edged streak on each side of the head, passing through the eye; belly yellowish or coral-red; uniform or spotted with black. Total length, 500 millimetres; tail 70. _Habitat_: Moluccas, New Guinea, New Britain. (2) _P. squamulosus_.--Scales in 15 rows. Nasal shield divided, in contact with the præocular; 1 + 2 temporals; 170-183 ventrals; 34-52 subcaudals. Colour brown, with a yellowish streak round the snout and through the eyes to the nape; belly whitish, with confluent black spots forming lines on each side. Total length, 375 millimetres; tail 55. _Habitat_: New South Wales. (3) _P. krefftii_ (fig. 44).--Nasal shield entire, in contact with the præocular; 1 + 2 temporals; 146-156 ventrals; 26-38 subcaudals. Colour dark brown, with a light longitudinal line on each scale; a yellowish cross-band on the occiput, connected with another yellow band which encircles the snout. Belly yellowish in front, black behind; subcaudals white, with a longitudinal black band running between them. [Illustration: FIG. 44.--_Pseudelaps krefftii._] [Illustration: FIG. 45.--_Pseudelaps harriettæ._] [Illustration: FIG. 46.--_Pseudelaps diadema._] Total length, 255 millimetres; tail 33. _Habitat_: Queensland. (4) _P. harriettæ_ (fig. 45).--Nasal shield entire, in contact with or narrowly separated from the præocular; 1 + 2 temporals; 176-193 ventrals; 29-35 subcaudals. Colour dark brown, with a light longitudinal line on each scale; a long yellow blotch on the nape, and, connected with this, a yellow ring round the snout; ventrals and subcaudals brown or black, edged with white. Total length, 415 millimetres; tail 45. _Habitat_: Queensland.