94 



Lygosoma (Liolepisma) atrogulare, sp. nov. 



Habit lacertiform and rather robust : the distance between the 

 end of the snout and the fore limb is contained from once and one- 

 sixth to once and one-third in male (1), and from once and one- 

 third to once and one-half in female (1) specimens, in the distance 

 between the axilla and groin. Snout of moderate length, obtuse. 

 Lower eyelid with an undivided transparent disc. Nostril pierced 

 in a nasal which is sometimes divided at its postero-superior angle, 

 sometimes with a deep groove posteriorly : nosupranasals : fronto- 

 nasal much broader than long, hexagonal, forming a broad truncate 

 suture with the rostral and a truncate or rounded one with the 

 frontal ; prefrontals of moderate size, sometimes forming a suture 

 with the second upper labial : frontal pentagonal or hexagonal, 

 aVjruptly truncate or concave in front, truncate or angular behind, 

 shorter than the frontoparietal, and in contact with the two 

 anterior supraoculars : four supraoculars, the two middle ones 

 the largest and laterally expanded : seven or eight supraciliaries,* 

 the first and the fourth the largest : frontoparietal single, followed 

 by a small interparietal : parietals forming a short median suture 

 behind the interparietal : a jDair of enlarged nuchals and a pair of 

 temporals bordering the parietals ; fourth and tifth, or fifth and 

 sixth, upper labials below the eye, the anterior the larger, the 

 posterior separated fr-om the eyelid by a series of small scales. 

 Ear-opening round, about twice the sizeof the transparent palpebral 

 disc, bordered all round by acute lobules, of which the middle one 

 anteriorly is much the largest. Thirty-six to thirty-eight scales 

 round the middle of the body, the dorsals quinque- the laterals 

 tri-carinate, the ridges being much more marked in young specimens: 

 lateral scales smaller than the dorsals or ventrals : marginal pre- 

 anal scales but slightly enlarged : the median series of scales on 

 the tail both above and below transversely dilated. The hind 

 limb when stretched forward reaches to the axilla or shoulder : 

 fingers four, toes five : subdigital lamelhe twenty-nine to thirty- 

 four under the fourth toe. Tail from two-thirds to four-fifths 

 longer than the head and body. Colojs — Head and body dark 

 brown, the latter occasionally with some of the scales black edged; 

 upper surface of the tail lighter brown, every third or fourth scale 

 of the upper median dilated series with a broad black anterior 

 and white posterior margin, forming together conspicuous double 

 crossbands ; lower half of the sides and under surface of tail pale 

 blue 5 upper surface of limbs similar to the back, lower surface 

 salmon color : under surface and sides of the head and the throat 

 black with a strong metallic bluish gloss in the males (?), yellowish- 

 white with a light blue gloss in the females(?), the labials and 



• In one example there are only six supraciliaries, the fourth being 

 greatly enlarged, and formed by its fusion with the fifth and sixth. 



