219. DENISONIA. 337 



its distance from the end of the snout, shorter than the parietals ; 

 nasal entire, in contact with the single prseocular ; two postooulars ; 

 temporals 2 + 2 (rarely 2 + 3), lower anterior wedged in between 

 the fifth and sixth upper labials and sometimes nearly reaching 

 the mouth ; six upper labials, third and fourth entering the eye ; 

 three (rarely four) lower labials in contact with the anterior chin- 

 shields, which are shorter than the posterior. Scales distinctly 

 striated, in 15 rows. Ventrals 136-151; anal entire; subcaudals 

 39-57. Brown or olive above, with or without black edges to the 

 scales ; a black streak on each side of the head, passing through 

 the eye ; a yellow streak on the upper lip, below the black streak ; 

 salmon-red to dark olive-grey beneath, speckled with darker, 

 exceptionally with a few black spots ; end of tail salmon-red. 



Total length 410 millim. ; tail 80. 



Southern Australia and Tasmania. 



A. No coUar. {H. coronoides, Gthr. ; A. Idbidlis, Jan.) 



a-h, c, d-e, f-i. S (V. 151, Tasmania. R. Gunn, Esq. [P.]. 



142, 142, 140, 148, 144; 



0. 45, 60, 49, 53, 57, 45), 



& hgr. (V. 144, 143, 141 ; 



C. 49, 49, 54). 

 k-l. 9 (V. 147, 143 ; 0. 54, Tasmania. A. J. Smith, Esq. 



42). [P.]. 



m. <S (V. 148 ; 0. 56). Tasmania. Zoological Society.' 



n. 5 (V. 147 ; 0. 48). Swan R. 



0. ? (V. 141 ; 0. 41). Australia. Lord Derby [P.]. 



p-q. 5 (V. 144, 147 ; 0. 46, Australasia. Lords of the Admir- 



47). alty [P.]. 



B. A yellow nuchal collar. {H. mastersii, Erefft ; A, rhodogaster, 



Jan ; H. oollaris, Macleay.) 



a. S (V. 140; 0.39). Flinders Range, G. KrefFt, Esq. [P.J. (One 

 S. Australia. of the types of H. mastersii.) 



4. Denisonia muelleri. 



Hoplocephalus muelleri, Fischer, Jahrh. Wiss. Anst. Hamb. ii. 

 1885, p. 109. 



Eostral little broader than deep, visible from above ; internasals 

 half as long as the prsefrontals ; frontal twice as long as broad ; 

 nasal entire, in contact with the single praeooular ; two postoculars ; 

 temporals 2+2, lower anterior large and wedged in between the 

 fifth and sixth labials ; six upper labials, third and fourth entering 

 the eye ; anterior chin-shields nearly as long as the posterior. 

 Scales in 17 rows. Veutrals lib; anal entire; subcaudals 38. 

 Grey-brown above ; lips and chin with yellow spots, which extend 

 on the sides of the neck ; grey beneath, with four or five longi- 

 tudinal series of elongate blackish spots. 



Total length 292 millim. ; tail 52. 



Queensland. 



VOL. III. z 



