16 Stejneger New Opisthoglyph Snake from Formosa. 



Boiga kraepelini, new species. 



Type. No. 1565, Naturhist. Museum, Hamburg; Kelung, Formosa; 

 Dr. Warburg, collector. 



Diagnosis. Anterior palatine teeth enlarged; diameter of eye equals 

 its distance from anterior border of nostril; upper preocular extending 

 to upper surface of head but separated widely from frontal; scales in 21 

 rows, median row scarcely enlarged; ventrals 232-245; anal double; 

 caudals 142-143 pairs; posterior chin-shields much shorter than the an 

 terior; temporals 4-5, scale-like, irregular. 



Habitat. Formosa. 



Description of type specimen. About 11 solid maxillary teeth, sub- 

 equal, slightly separated from grooved fangs which are not much en 

 larged; head very distinct from neck; eye large, equaling its distance 

 from anterior border of nostril, with vertically elliptical pupil; rostral 

 wider than high, barely visible from above; internasals much broader 

 than long, much shorter than prefontals; frontal as long as broad, as 

 long as its distance from rostral and as the interparietal suture; nasals 

 large, posterior concave; loreal higher than long; 2 preoculars, the 

 upper one reaching the upper surface of the head, but separated widely 

 from frontal; 2 postoculars; temporals 4 -f- 5, scale-like, irregular; 9 

 supralabials of which the third, fourth and fifth enter the eye; 5 (on 

 one side 6) lower labials in contact with anterior chin-shields which are 

 much larger than the posterior pair; body compressed, about twice as 

 high as wide; scales in 21 oblique rows, smooth, with apical pits, the 

 vertebral row scarcely enlarged, the scales pointed behind; ventrals, 245, 

 flat underneath, obtusely angulate laterally; anal double; subcaudals, 

 142 pairs. Color brownish gray, with about 57 darker cross-bars com 

 posed of blackedged scales from neck to anus, then cross-bars extending 

 on the sides to about 4 scale rows from the ventrals; only faint indica 

 tions of alternating lateral spots; top of head uniform brown; underside 

 pale with a median area more grayish and laterally bordered by an irreg 

 ular dusky line following the ventral angle. 



Description of specimen No. 1569, Hamburg Mus. The color descrip 

 tion of this specimen which was also collected by Dr. Warburg near 

 South Cape, Formosa; is as follows: Ground color paler and more gray 

 ish than the type (No. 1565) with better defined crossbands which 

 alternate with a row of lateral spots approximately covering the 

 third, fourth and fifth rows from the ventrals; the ventral median area 

 darker and better defined; head with a median dark line on internasal 

 and prefrontal sutures and middle of frontal, reappearing on the anterior 

 part of upper neck as a median elliptical, brown spot; a similar brown 

 ish band from posterior half of supraoculars posteriorly to side of neck 

 where it joins another originating on the upper part of the rostral and 

 running obliquely through nostril and eye over posterior supralabials to 

 side of neck; between these lines a pale gray band with whitish edges; 

 supralabials also pale, more or less marked with dusky and with a dusky 

 spot on the suture below the centre of the eye. 



