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Show 1903.] ON NEW REPTILES FROM BRITISH NEW GUINEA. 125 The discovery in New Guinea of a fish of the genus Ilhiac-ichthys Blgr. (Platyptera C. & V.), a type of Gobiidae so admirably adapted to life in mountain tor-rents, is a very interesting addition to our knowledge. The type of the genus, R. aspro, C. k V., which differs from R. novce-guinece in the larger eye situated much nearer to the gill-opening than to the end of the snout, inhabits Bantam, Celebes, and Luzon *, whilst a doubtful species, R. sinensis Blkr., is founded on a Chinese drawing described as " dubice exactitudinis." EXPLANATION OF PLATE XI. Rhiaeielithys nova-guinea, with upper and lower views of head and anterior part of body, reduced f nat. size. 3. Descriptions of new Reptiles from British New Guinea. By G. A. BOULENGER, F.R.S., V.P.Z.S. [Received May 13,1903.] (Plates XII. & XHI.t) LYGOSOMA MILNENSE. (Plate XII. fig. 1.) Section Hinulia. Head large, especially in the male, body short; the distance between the end of the snout and the fore limb is contained once to once and one third in the distance between axilla and groin. Snout short, obtuse. Lower eyelid scaly. Nostril pierced in a single nasal; no supranasal; a single anterior loreal; rostral forming a very long, curved suture with the frontonasal, which is nearly twice as broad as long; prefrontals forming a median suture; frontal much narrowed posteriorly, longer than frontoparietals and interparietals together, in contact with the three first supraoculars ; five supraoculars, first longest; 10 or 11 supraciliaries, first largest; frontoparietals and interparietal distinct, nearly equal in length; parietals forming a suture behind the interparietal; nuchals absent or reduced to one pair; third, fourth, and fifth labials below the eye. Ear-opening oval, nearly as large as the eye-opening; no auricular lobules. Scales smooth, dorsals largest, 30 or 32 round the middle of the body. Praaanals slightly enlarged. The hind limb reaches the shoulder, or between the shoulder and the ear. Digits rather elongate, slightly compressed; subdigital lamellae smooth, 35 to 37 under the fourth toe. Tail once and a half to once and two-thirds the length of head and body. Coloration very variable. Upper parts uniform brown, or with a light, dark-edged dorso-lateral streak joining its fellow on the base of * I have not been able to find on any map the locality " Wanderer Bay " given by Giinther, Cat. Fish. iii. p. 138. f For explanation of the Plates, see p. 129. |