1878.] from tlie Ilimahiyns and Burma. 129 



junctum ; nasale haud hipartitum. Squamw corporis in tredecim serichus 

 longitudinalibus, Icdves, ventrales ad latera angulatce, subcaudales hiseriatim 

 ordinatcd. 



Ulupe dayisoni, sp. nov. 



TJ. scutis prcefrontalihus cum postfrontalihus long itudine fere cequalihus, 

 verticali medioeri, occipitalihus dupio onajorihus ; loreali longo ad oculum 

 attingente ; prceoculari alio nullo, postoculari unico ; supralahialihus 7, 

 tertio quartoque infraorhitalihus ; ventralibus 265, anali integro ; sub- 

 caudalibus 108 ; superne nigra, albo-transfasciata, annulis antice latioribus 

 atque mag is distantibus, subtus alhida. 



Hob. in provincia Tenasserim Burmanise, haud pro cul ab urbe Tavoy. 



Description. Body, slender, compressed. Head a little broader than 

 the neck, short, dej^ressed. Piipil elliptical, vertical. Shields o£ head 

 regular, nostril in a single shield ; loreal and prseocular united. Scales of 

 body smooth, in 13 rows. Ventrals 265, strongly angulate at the sides, 

 anal undivided, subcaudals in 108 pairs. Maxillary teeth few in number, 

 a space behind the anterior tooth, followed by three or four teeth close 

 together, the two anterior rather the longest ; mandibular teeth small. 



Head shields. — Eostral much broader than high, scarcely extending 

 to the upper surface of the head. Anterior frontals as long and nearly as 

 broad as the posterior, the anterior edges of the former meeting at a slight 

 angle directed backwards, and each anterior edge being about equal to the 

 suture between the two shields. Vertical of moderate size, about half of 

 an occipital, the sides convex, curving gently towards each other at first, 

 more rapidly behind. Occipitals rounded behind. Nostril small, rather 

 nearer to the anterior than to the posterior extremity of the nasal shield, 

 which is much longer than high-, and has only one shield, of about the 

 same shape, and apparently consisting of the loreal and prseocular united, 

 between it and the eye. No other prsBocular is present ; one postocular ; 

 the superciliary descends on the side of the head before and behind the 

 eye. Upper labials 7, the 3rd and 4th forming the lower edge of the 

 orbit ; temporals 1 + 2. 



Colour in spirit, above black with white cross-bands, each about a third 

 of the width of the intervening dark space, becoming broader on the sides ; 

 lower parts white ; so the colour may be described as white with large 

 black spots above. The white rings and black interspaces are broadest 

 near the head and become much narrower behind, and still narrower on the 

 tail, but the proportion of the two colours remains the same. On the single 

 specimen collected there are 36 white rings on the body, 26 on tlie tail, 

 the last being terminal. The white sides and lower parts, on tlie hinder 

 part of the body and the tail, are spotted and mottled with dusky. Head, 



