Zoological Museums of Lund and Malmo. 171 



below the condyle. In //. modeslus, Gthr. (two specimens 

 in the collections), the lower surface is smooth (fig. l,b). 



In the ' Catalogue of Snakes ' Boulenger has laid stress 

 upon the presence or absence of hypapopiiyses on the posterior 

 dorsal vertebrae, and, so far as I know, he has continued 

 to do so. Among the snakes I have had an opportunity of 

 examining I have, however, found several specimens which 

 differ from species already described only by the presence or 

 absence of the hypa])opliyses in the posterior region of the 

 dorsal column. That these ought not to be regarded as 

 new species or genera is quite certain, and consequently the 

 hypapopiiyses are not of such great importance for classi- 

 fication as has been supposed. More extended examination 

 of other species and genera is required. 



Fi-. 1. 



^ 



b 



I 



^'erteljitt- in the posterior region of the dorsal column. 



a. IIelico2)s leopardimis, Schleg. 



b. 7nodcstus, Gthr. 



c. Tretanorhinus infermedius, sp. u. 



d. Chrysupcleu ornata, Shaw, type A. 



32. Tretanorhinus tntennedius, sp. n. (PI. XII. fig. 2 ) 



Without any hypapophyses on the posterior dorsal vertehrm 

 (text-fig. 1, c) . 



Nasals separated. Internasals small. Frontal much 

 shorter than the parietals. One loreal, about twice as long as 

 deep. Two prajoculars. Two postoculars. Temporals 

 1 + 2. Eight upper labials, fourth entering the eye. Five 

 lower labials in contact with the anterior chin-shields. Pos- 

 terior chin-shields separated from each other by scales. 

 Scales in 21 rows, striated, with short but strong keels. 

 Ventrals 142. Anal divided. Subcaudals 56. Dark brown 

 above, with a dorsal series of irregular black spots, sometimes 

 confluent. An indistinct yellow, dark-edged, lateral streak. 



