LYGOSOMA EMIGRANS. 125 



12. Li/gosoma emigrnns nov. spec. 



I class this species iu the group Hinxdia next to Lygo- 

 soma tenue Gray, to which species it shows a very striking 

 resemblance as to the pholidosis of the head , but from 

 which it widely differs with regard to the development of 

 its limbs and its sleuderness. Our new species is so slender 

 and has such short limbs, that at first I hesitated whether 

 to class it under the group Hinulia or under Homolepida , 

 in which latter case it proved to be very nearly related 

 to Lygosoma taprobanense Kelaart. 



The following description in the way of Boulenger's 

 Catalogue will show its affinity with L. tenue. 



Habit slender, the distance between the end of the snout 

 and the forelimb is contained about P/4 in the distance 

 betweeu axilla and groin. Snoub moderately obtuse. Lower 

 eyelid scaly. Nostril pierced in a single nasal , no supra- 

 nasal ; frontonasal much broader than long, forming a su- 

 ture with the rostral and with the frontal. Frontal as long 

 or a little shorter than the frontoparietals and the inter- 

 parietal together , in contact with the two anterior supra- 

 oculars , four supraoculars , seven or eight supraciliaries ; 

 frontoparietals and interparietal distinct, subequal or latter 

 shortest; parietals forming a suture behind the interpa- 

 rietal , two enlarged shields on each side bordering the pa- 

 rietals , a smaller one in the middle behind the suture 

 between the parietals. A part of the fourth upper labial 

 and the fifth and sixth upper labial below the eye. Ear- 

 opening round without auricular lobes , smaller than the 

 eye-opening. 26 rows of smooth scales round the middle 

 of the body , dorsal scales largest. A pair of large prae- 

 anals. Length of the hind limb half as long as the dis- 

 tance between axilla and groin , length of the forelimb a 

 little less than a third of that distance. Fourth toe the 

 longest with 20 smooth subdigital lamellae. 



On the back a brown colour with black spots , a dark 

 brown band above the earopening through the eye mostly 

 bordered above by a white line ; sides dark brown spotted 



Notes from the Leyden Museum , Vol. XVI. 



