)Vj 



18/2.] REPTILES AND AMPHIBIANS. 593 



different from those on the side of the pouch. Abdominal scales 

 small, very obtusely keeled. The middle of the upper arm sur- 

 rounded by about twenty-four longitudinal series of scales. Tym- 

 panum very distinct, but small, about one third of the size of the eye. 

 Throat apparently without spots. 

 Two adult specimens from Labuan. 



Tiaris Sophia. (Plate XXXVII. fig. C.) 



Tiaris bellii, Gray, Lizards, p. 239 (not D. & B.). 



Tiaris sophice, Gray, Lizards, p. 240. 



Tiaris petersii, Giinth. Zool. Reeord,-«-. p. 136. 



Dorsal crest continuous, high in the adult, disappearing on the 

 front part of the tail. Sides with irregularly scattered larger scales. 

 In the adult male the scales of the median line of the gular pouch 

 enlarged and provided with a strong keel, which terminates in a 

 prominent spine. Abdominal scales rather small, strongly keeled. 

 The middle of the upper arm surrounded by about twenty longitu- 

 dinal series of scales. Tympanum very distinct, smaller than the eye. 

 Throat without, or with rather indistinct, oblique blackish lines. 



Two adidt, two half-grown, and two young specimens from the 

 Philippine Islands. 



Tiaris tuberculatus. (Plate XXXVIII.) 



Agrees with Tiaris dilophus in habit, structure of the dorsal crest, 

 scattered larger scales on the sides, &c. But the scales generally 

 are considerably larger, especially on the tail, limbs, and gular pouch, 

 and provided with very faint keels only. The scales along the upper 

 edge of the tail form rather a serrature than a crest. A large round 

 conical scale below the tympanum, on the angle of the lower jaw. 



One adult specimen from the East-Indian archipelago. 



LoPHOCALOTES. 



This genus differs from Calotes in the structure of the crest, which is 

 interrupted on the neck, and formed by distant spines on the back. 



Lophocalotes interrtjptus. (Plate XXXVII. fig. A.) 



Head without spines ; but there is a larger scale, conically raised, 

 on each side of the neck, midway between the tympanum and com- 

 mencement of the nuchal crest. A series of three enlarged scutes 

 between the eye and tympanum. Dorsal crest moderately high, 

 composed of close-set lanceolate spines on the neck, interrupted 

 above the shoulder, and formed by about fourteen triangular spines 

 on the trunk, only every alternate median scale being modified into 

 a spine. No fold in front of the shoulder. Scales in the median 

 line of the throat much smaller than those on the sides. About 

 thirty-four series of scales round the middle of the body, those of 

 the belly much smaller than those on the sides. The keels of some 

 scales on the limbs terminate in prominent spines. Green, with 

 rather irregular yellowish markings, especially on the head. A yel- 



Proc. Zool. Soc— 1872, No. XXXVIII. 



