251 



Dr. A. B. Meyer [C. 

 Dr. A. B. Meyer [C. 

 A. Everett, Mac^. [C.' 

 II.M.8. 'Cliallen-er."' 

 II.M.S. ' Challenger.' 



■"c^ 



Leyden Museum. 

 II. 0. Forbes, JCsq. [0.]. 

 G. L. King, J'^sq. [P.]. 

 II.M.S. ' ChaUenger.' 

 liev. (I. lirown [C.]. 

 II.B. Guppy,E3q.[P.]. 



35. Lygosonia olivaceiim. 



Dasia olivacea, (rraij, Cat. p. 108. 

 Tiliqua grisea, Gray, I. c. p. 110. 

 Dasia olivacea, (rnu/, Ann. N. H. ii. 1838, p. o31. 

 Euprepes ernestii, IJuin. t.y Bibr. v. p. G9(j j Cantor, Cat. Mai, Rept. 

 p. 47. 



olivaceus, Giinth. Rept. Brit. Ind. p. 80, pi. x. fig. D ; Theoh, 



Cat. Rept. Brit. Ind. p. 51. 



(Tiliqua) semicinctus, Peters, Mon. Berl. Ac. 1867, p. 21. 



Tiliqua ohvacea, Stoliczka, Joura. As. Soc. Beny. xxxix. 1870, p. 172. 



Habit lacertiform ; tlie distance between the end of the snout and 

 the fore limb is contained once and one fifth to once and a halt' in the 

 distance between axilla and groin. Snout rather elongate, obtusely 

 acuminate, much depressed. Lower eyelid scaly. Nostril pierced 

 in the middle of a small nasal ; a supranasal, rarely in contact with 

 its fellow ; frontonasal broader than long, usually in contact with 

 the rostral, and frequently also with the frontal ; latter as long as 

 or a little longer than the frontoparietals and parietals together, in 

 contact with the first and second, or first, second, and third supra- 

 oculars ; four supraoculars, subequal in length ; seven or eight 

 supraciliaries, first largest ; frontoparietals and interparietal distinct, 

 latter as large as or a little smaller than former, and entirely sepa- 

 rating the parietals ; a pair of nuchals ; four labials anterior to the 

 subocular. Ear-opening very small. 28 or 3U scales round the 

 middle of the body ; the dorsals and laterals with three to nine mor-j 

 or less strong keels ; nuchal scales smooth or indistinctly keeled ; 

 dorsals a little larger than ventrals. Prasanals not enlarged. The 

 adpressed limbs feebly overlap, the hind limb never reaching beyond 

 the wrist. Digits moderately elongate, with strong sharp claws, 

 the basal phalanges cyclotetragonal, the distal strongly compressed ; 

 subdigital lameUas smooth, 17 to 20 under the fourth toe. Tail 

 about once and one third the length of head and body. Young with 

 transverse dark brown bands separated by narrow pale olive inter- 

 spaces. Adult olive or olive-brown above, with more or less regular 

 transverse series of pale, dark-edged spots or traces of dark cross 

 bands; a more or less distinct pale dorso-lateral band on the 



