{yi the Collection of the British Museum. 417 



One specimen, 10 inches long, was obtained by Mr. Theobald 

 on the Arrakan Hills. 



Simotes cruentatus. 



Scales in seventeen rows. One prge- and two postoculars ; 

 loreal rather longer than deep ; eight upper labials, the fourth 

 and fifth entering the orbit; temporals 1 + 2; ventrals 165- 

 167 ; anal bifid ; subcaudals 33-37. 



Head and neck with the markings usual in the species of 

 this genus rather indistinct. Body brownish olive, with four 

 very indistinct darker lines ; abdomen white, with square black 

 spots ; anal shield white ; the three or fom- first subcaudal 

 shields black, the others red ; generally another black spot at 

 some distance from the end of the tail. 



We have received several examples, under the name given 

 above, from Mr. Theobald, who discovered this snake in Pegu. 

 The largest of the specimens is 15 inches long ; one female 

 example, 13 inches long, has five ova in the oviduct, each 

 ovum being 9 lines long. 



Simotes Theohaldi. 



Scales in seventeen rows. One pras- and two postoculars ; 

 loreal much longer than high ; eight upper labials, the fom'th 

 and fifth entering the orbit ; temporals 1 + 2 + 3 ; ventrals 

 177 ; anal bifid ; subcaudals 34. 



Head and neck with the markings usual in the species of 

 this genus ; upper parts of the body brown, with a light ver- 

 tical line commencing from the occiput and longitudinally 

 dividing the black nuchal spot ; another light line on each 

 side of the back, along the fifth outer series of scales. Back 

 crossed by numerous very narrow reticulated black streaks ; 

 the outer two series of scales light olive-coloured ; abdomen 

 with square black spots ; subcaudals uniform white. 



This species is allied to Simotes cruentatus, but differs from 

 it in the coloration and form of the loreal shield. We have 

 received one example, 16 inches long, from Mr. Theobald, 

 who discovered it in Pegu. 



Ahlabes histrigatiis. 

 Closely allied to the species of the group Enicognathus. 

 Scales in seventeen rows ; loreal square ; one prseocular, reach- 

 ing to the upper sm-face of the head ; two postoculars ; the 

 occipital extends downwards to the lower postocular ; one 

 temporal in front, in contact with the lower postocular only ; 

 two posterior temporals ; upper labials ten, the fom'th, fifth, 

 and sixth entering the orbit; ventrals 192; anal bifid; sub- 

 caudals 82. 



