228 Miss J. B. Procter on a new 



were therefore put on one side, and the boy, Master John 

 Brandon-Jones, after whom I have named this new species, 

 went away without leaving his address. By roundabout 

 metljods this was at last ascertained, aid he has been able 

 to furnish me with complete data as to the locality in which 

 they were found by his great-uncle, Mr. Duckinford-Jones^ 

 who is a collector of Brazilian butterflies. He has also 

 presented both specimens to the Museum. 



The snakes belong to a new and very distinct genus of 

 the subfamily Colubrinte, for which I propose the name 

 Sordellina, in honour of Prof. Sordelli of Milan, for whose 

 beautiful work in the ' Iconographie Generale des Ophidieus' 

 all workers at snakes will ever be grateful. 



SORDELLINA, gCU. nOV. 



Maxilla short, with nine teeth increasing in size posteriorly, 

 followed after an interspace by two enlarged ones. Palatine 

 and pterygoid with about eighteen teeth*. Mandibular teeth 

 subequal, fourteen or more in number f. 



Fig. 1. 



Maxilla of Sorde'lina hrandon-jo7iesii, gen. et sp. n. 

 X 2. 



Head scarcely distinct from neck ; nasal shield semi- 

 divided ; eye very small with vertically subelliptic pu])il. 

 Body cylindrical; scales smooth, without apical pits, in 

 seventeen rows ; tail short, tapering to a sharp point. 

 Subcaudals in two rows. Anal divided. Hypapophyses 

 absent in the posterior vertebra?. 



Affinities. Allied to Urotheca, Bibr., from which it differs 

 in the form of the tail, which is very long and thick 

 throughout in Urotheca and short and tapering in Sordellina. 

 The eye of the former is also larger, and has a round 

 pupil. The dentition is similar. In the size of the eye 

 and general form and scutellation of the body Sordellina 

 resembles Hydrops, Wagl., to some extent. 



* Of wliicli nine are fixed and functional and tlie alternating nine not 

 fixed and not functional but accessory. 



t Of wliich but seven or so are fixed and functional. Apart from 

 these accessory teeth situated in tbe functional series, there is in each 

 case the usual complete reserve series hing prone within the guni-tiap 

 on the inner side of the maxillaiy and mandibular sets and the outer 

 side of the pterygoid and palatine. 



