26 Dr. A. Giinther on neiu Species of Snakes 



Yive upper labials, the third and fourth below the orbit; the 

 first pair of lower labials touch each other behind the mentale, 

 without forming a suture. No azygos shield between the chin- 

 shields. Ventrals 151 ; anal entire; subcaudals 16. Brownish 

 above, with eight brown longitudinal lines — two along the me- 

 dian line of the back (that is, one on each side of the vertebral 

 series of scales), a broader one along the meeting edges of the 

 fourth and fifth outer series of scales, one of the same width 

 along the meeting edges of the second and third series, and, 

 finally, one, very narrow, along the meeting edges of the two 

 outermost series. A broad brown collar on the neck, edged 

 with yellowish ; tail with two large black transverse spots. 

 Lower parts uniform yellowish. 

 Eight inches long. Borneo. 



Calamelaps, gen. nov. 



Body cylindrical, rather slender; tail short in the female, of 

 moderate length in the male. Two pairs of frontal shields ; 

 rostral rounded, moderate ; nasal single, its anterior portion 

 pierced by the nostrils ; loreal and anteorbital absent, the pos- 

 terior frontal forming a broad suture with the third labial; 

 postorbital minute or absent; the fifth labial forming a long 

 suture with the occipital ; six upper labials. Eye very small. 

 Scales smooth, without apical groove, in seventeen rows ; anal 

 bifid; subcaudals two-rowed. The posterior maxillary tooth 

 elongate and grooved. 



The type of this genus is Calamaria unicolor (Rnhrdt.), from 

 West Africa. 



Ahlahes {Enicognathus) jlaviceps. PI. VI. fig. B. 



Habit rather slender; head depressed, with very short snout. 

 Scales in seventeen rows, Loreal rather higher than long ; one 

 prseocular, just reaching the upper surface of the head; two 

 postoculars. The occipital extends downwards to the lower 

 postocular; temporals 2 + 2, the two anterior in contact with 

 the lower postocular. Eight upper labials, the third, fourth, 

 and fifth entering the orbit. Anterior chin-shields not longer, 

 but rather broader than the posterior, and in contact with four 

 lower labials. Ventrals 150; anal bifid; subcaudals 97. Maxil- 

 lary teeth small, numerous, closely set. Upper parts brownish 

 black, powdered with grey. A grey band commences on the 

 neck, runs along each side of the back, where it is three scales 

 broad, and disappears on the tail ; anteriorly it is edged with 

 black, in the middle accompanied with black spots along the 

 edges; posteriorly the black spots stand in regular intervals 

 within the band. Head and anterior part of the nape dark 



