228. BOTJLBNGEBINA. 357 



internasals two thirds the length of the prsefrontals ; frontal once 

 and a half to once and two thirds as long as broad, a little broader 

 than the supraocular, as long as or a little longer than its distance 

 from the end of the snout, shorter than the parietals ; nasal 

 in contact with the single praeooular ; two postooulars ; temporals 

 2 + 2; six upper labials, third and fourth entering the eye; three 

 lower labials in contact with the anterior chin-shields, which 

 are shorter than the posterior. Scales finely striated, in 15 rows. 

 Ventrals 120-128; anal entire; suboaudals 52-60. Dark olive 

 above; some of the sutures between the upper labials black; a 

 black occipital blotch in the young; yellowish or greyish oUve 

 beneath, the ventrals black at the base. 



Total length 460 millim. ; tail 95. 



South-west Australia. 



a. 5 (V. 123; 0. 55). Swan River. Haslar Collection. 1 



b. d (V- 124 ; 0. 60). Swan River. j 

 c-e-dCV. 125; 0.58), S.Australia. y-flvnea ) 



2 (V. 128; 0.52), & I ^ •^'^ ■■' 



hgr. (V.120; 0.52). I 



/. cJ (V. 125 ; 0. 58). S. Australia. Dr. Fleming FP.]. 



g. Skull of e. 



228. BOULENGERINA. 



Boulengerina, Dollo, Bull. Mus. Belg. iv. 1886, p. 159 ; Boulenn. 

 Proc. Zool. Soe. 1895, p. 866. 



Maxillary bone extending forwards as far as the palatine, with 

 a pair of large grooved poison-fangs followed by three or four small 

 teeth ; mandibular teeth, anterior longest. Head not distinct from 

 neck ; eye small, with round pupil ; nostril between two nasals ; 

 no loreal. Body cylindrical ; scales smooth, without pits, in 21 

 rows ; ventrals rounded. Tail moderate ; subcaudals in two rows. 



Central Africa. 



1. Boulengerina stormsi. 



Boulengerina stormsi, Dollo, Bull, Mus. Belg. iv. 1886, p. 160, fin-. ; 

 Boideng. Proe. Zool. Soc. 1895, p. 866, pi. xlviii. 



Eostral nearly as deep as broad, the portion visible from above 

 measuring half its distance from the frontal ; internasals shorter 

 and a little broader than the prsefrontals, extensively in contact 

 with the praeocular; frontal small, slightly longer than broad, as 

 broad as the supraocular, as long as its distance from the rostral, 

 slightly more than half the length of the parietals ; posterior nasal 

 in contact with the single praeocular ; two postooulars ; temporals 

 1 -|-2 ; seven upper labials, third and fourth entering the eye, fourth, 

 fifth, and sixth in contact with the lower postocular, third and sixth 

 deepest ; four lower labials in contact with the anterior chin-shields, 

 which are much longer than the posterior. Scales in 21 rows. 

 Ventrals 193 ; anal entire ; subcaudals 67. Brown above ; four 



