130 Q i. BOI LENGER 



sc;uitil\ m trout, closely on the posterior third of the body and 

 on the tail. 



Total length 400 mill. ; tail 80. 



A single specimen from Missiones Mosetenes. 



32. Leplodira annulata, L. (2, 3, 7). 



33. Oxyrhopus 'petolarius, L. (1, 7). 



34. Oxyrhopus bitorqualus, Gthr. (2, 5, 7). 



35. Oxyrhopus subrnarginatuSj Ptrs. (2). 



Eye smaller than in 0. bitorqualus, only one third length of 

 snout; praeocular not reaching the frontal, which is nearly as 

 broad as long. Scales yellow at the base, black at the end; 

 ventrals and subcaudals bright yellow, edged with black; 

 end of snout and upper lip yellow ; crown brown ; occiput 

 black. 



A single specimen, with 200 ventrals and (id pairs of sub- 

 caudals. Total length 830 millim. ; tail 180. 



36. Oxyrhopus labialis, Jan. (4). 



37. Oxyrhopus elodia, Daud. (2). 



38. Philodryas olfe.rsii, Licht. (1, 5, 7). 



39. Erythrolamprus aesculapii, L. (1). 



40. Homalocranium melanocephalum, L. (2, o). 



41. Elaps balzani, sp. n. — Eye as long as its distance from 

 the mouth. Rostral broader than deep; frontal considerably 

 broader than the supraocular, slightly longer than broad, as 

 long as its distance from the end of the snout, shorter than the 

 parietals ; latter as long as their distance from the internasals; 

 one prae- and one postocular; temporals 1 + 1; seven upper 

 labials, third not longer than fourth, third, fourth, and fifth 

 entering the eye ; four lower labials in contact with the ante- 

 rior chin-shields, which are a little shorter than the posterior. 

 Scales in VÒ rows. Ventrals 198; anal divided; subcaudals ;>'.». 

 26 equidistant, equal black annuii on the body, separated bj 

 narrower interspaces coloured yellow (red?) with black tips to 

 the scales; a yellow band pound the back of the head, across 



the parietals and temples, and extending to the chin. 

 Total length (i.'iO millim. ; tail ."i;{. 



