Waite and Longman — Descriptions of Snakes 



177 



The single specimen examined appears to be the third known ; the definite 

 locality recorded indicates that the species inhabits the country Ijordering the dry 

 interior regions. It was taken during an excursion of the Field Naturalists' 

 Section of the Royal Society of South Australia. 



As Boulenger (-) pointed out, this species is allied to Dcuisonia forrcsti and 

 P. frontalis. Longman ( ■' ) has also made reference to the variety propinqua De 

 \'is. 1 le examined seven specimens of D . frontalis in the Queensland Aluseum, and 

 remarking on the considerable variation in the juxtaposition or otherwise of the 

 nasal and jjreocular scales, finds it difticult to separate these forms from D. suta. 



DENISONIA MACULATA Steindachner. 



Hoploccpliuhis nidciilatiis Steind. Reise Novara, ly67, p. ."^1. Giinth. Journ. JNIus. 



(iodeff. xii, 1876. p. 46. 

 Pciiisonia ornata Krefft. Proc. Zool. .Soc, 1869, p. 321, and Snakes of Austr., 



186<), p. 82, pi. xi, fig. 4. 

 Dcnisoiiia inacnlata Rouleng. Cat. Snakes iii, 1896, p. 34L 

 ['late xx\"ii, fig. 1, and Text fig. Z5. 



Scales in 17 rows. X'entrals 134. Anal entire. Subcaudals single in 24 

 rows. 



FJL'. a. Head of Dcnisonia macnlata. 



Description. \'crtical diameter of the eye greater than its distance from the 

 mouth and aliont half its distance from the end of the snout. Pupil round. 

 Rostral almost twice as broad as deep and jtist visible from above. Internasals 

 shorter than the prefrontals, the last-named being as broad as long. Frontal once 

 and one-half times longer than broad and as long as its distance from the end of 

 the snout : much shorter than the large parietals. Nasal entire in our specimen 



(2) Br,ulen.ger: .\nn. Mag. Xat. Hist. Ci). xviii, lOOii, p. 441. 



(3) Longman: Mem. Queensl. Mus. I, 1912, p. 2.';. 



