217. DIEMENIA. 321 



? Elapooephalus {non Ounth.), Macleay, Proc. Linn. Soc. N. 8. W. 



ii. 1878, p. 221. 

 ? Elapocranium, Macleay, Proc. Linn. Soc. N. 8. W, ix. 1884, 



p. 560. 



Maxillary extending forwards as far as the palatine, with a pair 

 of large grooved poison-fangs followed, after an interspace, by 7 to 

 15 small grooved teeth ; anterior mandibular teeth strongly enlarged, 

 fang-like. Head slightly distinct from neck, with distinct canthus 

 rostralis ; eye moderate or large, with round pupil ; nasal entire or 

 divided ; frontal elongate ; no loreal. Body cylindrical ; scales 

 smooth, without pits, in 15 to 19 rows (more on the neck) ; belly 

 rounded. Tail moderate or long ; subeaudals all or most in two rows. 



Australia and New Guinea. 



Fig. 24. 



Maxillary and mandible of Siemenia psammophis. 



Synopsis of the Species. 



I. Scales in 15 rows ; rostral just visible from above, 



A. Anal divided. 



Eostral nearly as deep as broad ; inter- 

 nasals at least half as long as the 

 prgefrontals 1. psammophis, p. 322. 



Eostral a little broader than deep ; inter- 

 nasals more than half as long as the 

 prsBfrontals 2. torquata, p. 323, 



Eostral considerably broader than deep ; 

 internasals not more than half as long 

 as the prsefrontals 3. olivaeea, p. 323. 



B. Anal entire 4. ornaiiceps, p. 324, 



II. Scales in 17 or 19 rows. 



Portion of rostral visible from above 



measuring about half its distance from 



the frontal ; ventrals 154-165 5. modesta, p. 324. 



Portion of rostral visible from above 



measuring one half to two thirds its 



distance from the frontal; ventrals 



190-232 6. textilis, p. 325. 



Portion of rostral visible from above as 



as long as its distance from the frontal ; 



ventrals 184-224 . . , 7. nucTialis, p. 326, 



TGI. III. ^ 



