124. HYPSIRHINA. 3 
Maxillary teeth 10 to 16, followed, after an interspace, by a pair 
of enlarged, grooved teeth; anterior mandibular teeth longest. 
Head small, not or but slightly distinct from neck; eye small, with 
round or yertically elliptic pupil; head-shields large; nasals in 
contact behind the rostral, semidivided, the cleft extending from 
the nostril to the first labial or the loreal; internasal single or 
divided ; loreal present. Body cylindrical; scales smooth, without 
pits, in 19 to 31l- rows; ventrals rounded. Tail moderate or short ; 
subcaudals in two rows. 
South-eastern Asia, Papuasia, Northern Queensland. 
Synopsis of the Species. 
I, Eye in contact with one, two, or three labials. 
A. Seales in 19 rows. 
Two internasals ; ventrals 173-175...... 1. indica, p. 4. 
Two internasals; ventrals 125-152...... 2. alternans, p. 4. 
A single internasal; ventrals 120-134 .. 3. plumbea, p. 5. 
B. Scales in 21 or 23 rows. 
‘1. Four or five lower labials (on each side) in contact with the 
anterior chin-shields ; only the fourth upper labial entering 
the eye. 
a. Loreal in contact with the internasal ; scales in 21 (rarely 
23) rows. 
Ventrals 120-128; subcaudals 54-66 .... 4. jagorii, p. 6. 
Ventrals 150-177; subcaudals 47-78 .... 5. enhydris, p. 6. 
b. Loreal not reaching the internasal. 
Scales in 21 rows; ventrals 158-163; sub- 
LGU © AIH gm es he ah tg tare RS: 8 6. bennetti, p. 8. 
Scales in 23 rows; ventrals 143-151; sub- 
Gamal 40-40 oo Seale Helse Sais 7. chinensis, p. 8. 
2. Three lower labials in contact with the anterior chin- 
shields. 
Fourth and fifth or fourth, fifth, and sixth 
labials entering the eye; ventrals 147-— 
ED Wai GALS.:1d Chan rapthes tt ately ate hyaieie dare i 8. macleayi, p. 9. 
Fifth or fifth and sixth labials entering the 
eye; ventrals 137-146 .............. 9. polylepis, p. 9. 
-C. Scales in 25 to 33 rows. 
1, A single internasal ; ventrals 125-130. 
Scales in 25 rows; internasal nearly as 
DRC MM TORE sc Wateewis vc ces casts 10. blanfordit, p. 10. 
Seales in 27 rows; internasal about twice 
Berend as LONG, 065). La bib). 6 vs oleidis vives 11. bocourti2, p. 10. 
B2 
