EEPTILES COLLECTED IN DUTCH NEW GUINEA. 257 



This species stands nearest to />. mgrolineatum Blgr. (Ann. & Mag. X. H. [6] xix. 

 1897, p. fi, pi. i. fig. 1 ), differing in the rather shorter body, the number of nuchal 

 shields (three pairs instead of six) and of scales round the body (24 instead of 28), and 

 the presence of a dark vertebral streak. 



17. LvGOSOMA UNDULATUM Petcrs & Doria. 



Mimika R. (B. O. U. Exped.).— Launch Camp, Setekwa R. (WoUaston Exped.). 



18. Lygosoma melanopogon D. & B. 



Mimika R. (B. O. U. Exped.}. — Canoe Camp, Setekwa R. (Wollaston Exped.). 



19. Lygosoma variegatum Peters. 



Mimika R. (B. O. U. Exped.). — Launch Camp and Canoe Camp, Setekwa R., and 

 Camp 111, Utakwa R., 2500 ft. (Wollaston Exped.). 



20. Lygosoma jobiense Meyer. 



Mimika R. (B. O. U. Exped.).— Canoe Camp, Setekwa R. (Wollaston Exped.). 



21. Lygosoma mimieanum, sp. n. (PI. XXIX. figs. 2, 2 a.) 



Section Parotosaurus * . Habit rather stout; the distance between the end of the 

 snout and the fore limb once and one-third the distance between axilla and groin. 

 Snout short, obtuse. Lower eyelid scaly. Nostril pierced in a single nasal ; a very 

 small triangular supranasal between the frontonasal, the nasal, and the postnasal, 

 which is single ; frontonasal broader than long, forming a concave suture with the 

 rostral and a convex suture with the prsefrontal, which is single (probably an individual 

 anomaly) ; frontal much narrowed posteriorly, as long as frontoparietals and inter- 

 parietal together, in contact with the first supraciliary and the first three supraoculars ; 

 seven supraoculars, first longest, seventh very small ; twelve supraciliaries, first largest; 

 frontoparietals and interparietal distinct, the former a little larger than the latter; 

 parietals forming a suture behind the interparietal ; three pairs of nuchals ; fifth, sixth, 

 and seventh upper labials below the eye. Ear-opening large, oval, smaller than the 

 eye-opening, the tympanum rather deeply sunk ; no auricular lobules. 40 smooth 

 scales round the middle of the body, dorsals largest, laterals smallest. A pair of 

 enlarged pracanals. The hind limb reaches the elbow of the adpressed fore limb. 

 Digits ratlier short, compressed ; 15 or IG lamella? under the fourth toe, mostly 

 obtusely keeled. Reddish brown above, with small brown spots forming numerous 



* ^om. n. for a Section coniipctiiig Uimdia and Otonatirus, and comprising L. annecletis Blgr. (Ann. Mus. 

 Geneva, [2j xviii. 1898, p. 098) and L. r/ranulatian Blgr. (P. Z. S. 19U3, ii. p. 126). 



2m 2 



