22 L. a. ANDERSSON, SOME NEW SPECIES OF SNAKES. 



Urotheca lateristriga (Berth.). 



A specimen, obtained in 1833 from Columbia, difFers from 

 the typical form of this species in the ärran gement of the shields 

 of the head. The loreal shield is considerably deeper than long, 

 on one side divided into two snperposed smaller loreals. Prse- 

 and postocnlars typical, on one side a little subocular. Posterior 

 temporals 2 (instead of 1) and the single normal elongate an- 

 terior teraporal is divided into two or three smaller shields. 

 Upper labials on one side eight with the fourth and fifth ente- 

 ring the eye, on the other side nine with the fourth, fifth, and 

 sixth entering the eye. Five lower labials in contact with the 

 anterior chin-shields. By the posterior temporals and by five 

 lower labials entering the anterior chin-shields the specimen 

 seems to be allied to the other Columbian species of this 

 genus, Urotheca eurysona (Cope), with which it also agrees 

 in having only 126 ventral shields. Subcaudals are only 68, 

 but the tail is mutilated. In colour the specimen is a ty- 

 pical Urotheca lateristriya and seems thus to be an interme- 

 diate form between the both Columbian species of the genus 

 Urotheca, wherefore I think it ought to be mentioned. 



Contia aestiva (L.). 



In the Cat. of Snakes Boulcnger states the scale-rows of 

 this snake to be 15. Of the ten specimens, however, there 

 are preserved in the R. Museum, no less than nine have 17 

 rows of scales on the anterior half of the body, only one has 

 15. On the posterior part the rows are 15, viz. 13. 



Oxyrhopus cloelia (Daud). 



In the Catalogue of Snakes, part III, p. 110, London 

 1896, BoiiLENGER states a new species of the genus Oxyrhojms, 

 O. maculatus, from Uruguay, said to be different from the 

 farther north Oxyrhopus cloelia, by having 51 instead of 64 

 — 93 pairs of subcaudals, narrower frontal shield and light 

 spöts on the dark ground colour above. The Royal Museum 

 received in 1891 from Uruguay by the engineer Mr. A. E. 



