(15) _D. nigrescens._--Scales in 15 rows; 170-200 ventrals; 30-46 subcaudals. Colour dark olive; head black; belly yellow. Total length, 545 millimetres; tail 75. _Habitat_: New South Wales and Queensland. (16) _D. nigrostriata._--Scales in 15 rows; 180-184 ventrals; 50-64 subcaudals. Colour yellow, streaked with black; head dark brown; upper lip and belly yellowish-white. Total length, 380 millimetres; tail 52. _Habitat_: Queensland. (17) _D. carpentariæ._--Scales in 15 rows; 166-183 ventrals; 31-43 subcaudals. Colour brown; upper lip and belly yellowish-white. Total length, 285 millimetres; tail 47. _Habitat_: Northern Queensland. (18) _D. pallidiceps._--Scales in 15 rows; 170-178 ventrals; 37-38 subcaudals. Colour dark olive-brown; head somewhat paler; belly yellowish. Total length, 590 millimetres; tail 80. _Habitat_: Northern Australia. (19) _D. melanura._--Scales in 15 or 17 rows; 165-171 ventrals; 38-48 subcaudals. Colour dark brown; head and sides usually reddish; belly yellow; tail black. Total length, 1,000 millimetres; tail 140. _Habitat_: Solomon Islands. (20) _D. par._--Scales in 16 rows; 164-166 ventrals; 40-49 subcaudals. Colour reddish-brown, in broad bands with white intervals; head blackish-brown; belly white; tail with red rings. Total length, 750 millimetres; tail 110. _Habitat_: Faro and Howla Islands, Bougainville Straits, Solomon Islands. (21) _D. woodfordii._--Scales in 17 rows; 166-172 ventrals; 41-45 subcaudal pairs. Colour brownish-white, with a reticulate pattern; head dark brown; belly white. Total length, 670 millimetres; tail 100. _Habitat_: New Georgia, Solomon Islands. (g) =Micropechis.= Maxillary bones extending forward as far as the palatines, with a pair of large grooved poison-fangs, followed by three small solid teeth; mandibular teeth longer in front. Head distinct from the neck; eyes very small, with round pupils; nostril between two nasal shields. Body cylindrical; scales smooth, in 15 or 17 rows. Tail short; subcaudals in 2 rows. (1) _M. ikaheka._--Scales in 15 rows; 180-223 ventrals; 39-55 subcaudals. Colour yellow and black, in irregular cross-bars; head and tail black above; belly yellow. Total length, 1,550 millimetres; tail 180. _Habitat_: New Guinea. (2) _M. elapoides._--Scales in 17 rows; 208 ventrals; 35 subcaudals. Colour cream, with 22 black bands, broader than the interspaces between them; snout and ocular region black. Total length, 750 millimetres; tail 75. _Habitat_: Florida Island, Solomon Group. (h) =Hoplocephalus.= Characters the same as in _Micropechis_. Scales in 21 rows; ventrals angulate and notched laterally. Tail moderate; subcaudals in a single row. (1) _H. bungaroides_ (Syn. _H. variegatus_. The Broad-headed Snake).--204-221 ventrals; 40-56 subcaudals. Colour black on the back, with yellow spots forming more or less regular cross-bands on the body; upper lip yellow, margined with black; belly blackish, yellow on the sides.