OTOCRYPTIS BIVITTATA. 127 



Note. — In the synopsis of the species of Dragons we have mentioned two other new forms, of which 

 we here subjoin short descriptions. 



Draco bimaculatus. — The hind Hmbs extend on to the axil of the fore limb, if laid forwards. Nostrils 

 directed outwards ; tympanum entirely scaleless. Dorsal scales smaller than the upper laliial shields, 

 distinctly keeled ; an interrupted row of larger rhombic scales along each side of the trunk, two scales 

 always being together; no tubercle above the orbit. Male with a distinct nuchal crest; gular sac 

 triangular, covered with minute scales. A large, round, deep-black spot behind each angle of the mouth ; 

 throat and base of the gular sac with short subreticulated blackish streaks. Wings greenish; above 

 beautifully reticulated with blackish, and with about thirteen narrow longitudinal stripes of white scales ; 

 below with blackish spots, confluent into bands. Philippine Islands. 



Draco rostratus. — This species has the snout less obtuse and somewhat more elongate than any of the 

 other Dragons. The hind limb extends to the axil of the fore limb, if laid forwards. Nostrils directed 

 outwards; tympanum scaly. The dorsal scales are as large as, or even larger than, the upper labial 

 shields, and keeled; a series of larger scales runs along each side of the trunk. Male with a very distinct 

 nuchal crest ; gular sac triangular, compressed, covered with very small scales. Throat and basal half of 

 the gular sac with brown dots ; wings with irregular narrow longitudinal stripes of white scales, and with 

 small, round brown spots ; the lower side of the wing immaculate. Probably from Borneo. 



OTOCRYPTIS, TFiegm. 



Tympanum hidden. Back and sides covered vvitli small scales, which are 

 regularly arranged ; a few large ones scattered over the sides. Male witli 

 a low nuchal crest and with a large gular sac ; no dorsal crest. Head 

 without any prominent spines or appendages. Limbs exceedingly long ; hind 

 limb longer than the body. Scales on the lower part of the tail not elongate. 



Only one species is known. 



OtOCRTPTIS BIVITTATA. 



Otocryptis bivittata, Wiegm. Ms, 1831, p. 291. 



Head tetrahedral, with a sharp canthus rostralis, and with the eyebrows somewhat raised ; 

 it is covered above with numerous keeled scales ; one of them, situated above the nasal shield, 

 is larger than the others ; the bony part of the interorbital space is concave and finely 

 granulated. Ten upper labial shields and as many lower labials. Occipital and nuchal 

 regions rough, but without prominent tubercles. Nostril small, round. Throat covered 

 with small keeled scales ; no fold in front of the shoulder or at the throat : male with a very 

 large gular appendage, extending backwards to the belly ; it can be folded up like a fan, 

 as in Sitana, but the scales with which it is covered are smaller and keeled. The female 

 and the young have no such appendage. 



