338 On Reptiles from Argentina. 



IG round the body, 30 from occiput to base of tail ; 8 femoral 

 pores on each side. Black above, with 10 yellowish-white 

 lines, corresponding to the series of scales ; lower parts 

 white; tail coral-red. 



From snout to vent 34 millim.; tail 50; head 7; fore 

 limb 8 ; hind limb 12. 



A single specimen from Cruz del Ejc. 



10. Glaucoma ungmrostris, sp. n. 



Snout prominent, hooked, with sharp horizontal edge ; 

 supraocular present ; rostral broad, truncate behind, ex- 

 tending to the level of the anterior borders of the eyes, which 

 are perfectly distinct; nasal completely divided info two; 

 ocular bordering the lip, between two labials. 14 scales 

 round the body. Diameter of body about 50 times in total 

 length, length of tail 26 times. ' Pale brown above, white 

 beneath. 



Total length 180 millim. 



A single specimen from Cruz del Eje. 



11. Boa occidentalis, Philippi. — Cruz del Eje. 



A male specimen, measuring 2070 millim. Called " Ampo- 

 lagua." The fat of this snake is used by the natives as 

 medicine. 



12. Liophis sagittifer, Jan. — Cruz del Eje. 



13. Lystrophis semicinctus, D. & B. — Cruz del Eje. 



14. Philodryas psammophideusj Gthr. — Cruz del Eje. 



15. Elaps Simonsiiy sp. n. 



Eye measuring f its distance from the mouth. Rostral 

 much broader than deep ; frontal as broad as the supraocular, 

 1^ as long as broad, as long as its distance from tlie end of 

 the snout, shorter than the parietals ; latter as long as their 

 distance from the internasals ; one priv- and two j)Ostoculars ; 

 temporals 1 -|- 1 ; 7 uj>per labials, third larger than fourth, 

 third and fourth entering the eye ; symphysial and 4 lower 

 labials in contact with the anterior chin-shields, which are 

 shorter than the posterior. Scales in 15 rows. Ventrals 

 230; anal divided; subcaudals 27. Tail ending very ob- 

 tusely. Body with 8 sets of 3 black an?mli, the annuli of 

 each set j-eparaled by narrow, yellow, black-spotted interspaces, 

 the spaces between the sets red, spotted with blacky and as 



