L. G. ANDERSSON, SOME NEW SPECIES OF SNAKES. 



Ungalia brasiliensis. Spec. hov. 



Plate I, figure 1. 



Maxillary teetli 19, mandibular teeth abont eqiial in 

 number, in both jaws all solid, closely set, and decreasing in 

 size from tbe large anterior ones. Head depressed, small, 

 but at the base distinctly broader than the narrow neck. 

 Eye small, half the length of its distance to the tip of the 

 snoiit; pupil vertical. Rostral broader than deep, not visible 

 from above, with its upper margin bordered by a little pen- 

 tagonal shield, placed between the rostral, the nasals, and 

 the internasals. Two internasals, considerably broader than 

 long. Two pairs of preefrontals; the anterior pair much lar- 

 ger than the posterior and in contact with the third npper 

 labial shield. Both pairs considerably broader than long. 

 The nostril oblong, pieroed in the anterior part of a rather 

 elongate, semidivided nasal. No loreal. A single great 

 preeocular with its npper margin broadly in contact with the 

 posterior prsefrontal and separated from the nasal by the 

 anterior preefrontal. Frontal pentagonal, much broader than 

 the supraocnlar, V/a as long as broad, and as long as its 

 distance from the tip of the snont. Parietals small, much 

 smaller than the frontal. Two postoculars; temporals 2 + 3. 

 Upper labials 9 or 10; 4 — 6^^ or 4 — 7^^ entering the eye. Nine 

 lower labials; the chin with a longitudinal groove, which on 

 both sides is bordered by four small irregular scales; of these 

 the two anterior ones are in contact with the three anterior 

 lower labials, the two posterior being separated from the 

 labials by scales. Body short and compressed, the posterior 

 part much higher than the anterior. Scales in 21 rows, 

 smooth; the vertebral row enlarged. Ventral shields 178; 

 anal entire. The tail short, prehensile, and pointed; sub- 

 caudals 37, all single. 



The colour above brown with indistinct round dark spöts, 

 arranged in six rows; the head ligther than the body, with 

 a dark streak from the eye to the angle of the mouth, small 

 dark spöts on the frontal shield, and a dark angle-shaped 



