REPTILIA. 275 



extends very far backwards. Acrochordus fasciatus SHAW, SCHL., Hydrus 

 granulates SCHN., Chersydrus fasciatus Cuv., R. Ani., id. ill., Kept. PL 

 36 bis, fig. i ; with white transverse bands, which on the back pass into 

 the brown fundamental colour; the tail is somewhat flattened laterally. 

 The eyes are very small; the nostrils lie more upwards; the upper jaw 

 extends beyond the lower with a round margin. This species, smaller than 

 the preceding, is met with at Java, Celebes, Sumatra and Timor. 



Xenodermus REINHARDT. Head distinct from trunk, cordate, 

 depressed, scutellate on snout and lips, elsewhere scaly. Abdo- 

 minal and subcaudal scutes undivided. Body furnished above with 

 minute appressed scales and with a triple longitudinal row of 

 larger scales, gibbous like tubercles. Lateral scales oval, con- 

 tiguous, not imbricate. 



Sp. Xenodermus javanicus REINHARDT, Danske Videnslc. SelsJcab. Math, og 

 Naturvid. Afhand. x. Tab. n. figs, i 8, DOM., BIBB. Erpetol. PL 63. 

 WIEGMANN, DUMERIL and BIBRON place this genus near A chrochordus, but 

 REINHARDT believes that there is no true affinity between them. I know 

 this genus only by the descriptions and figures of REINHARDT and 

 DUMERIL, and hence it is only with hesitation that I pronounce that this 

 genus might perhaps be placed in the following Family near Boa and 

 Python. 



Family XI. Pythonina. Spurs or rudiments of posterior 

 feet (two mobile hooks, one on each side, near the anus). Body 

 covered above with small scales, below with scutes. Subcaudal 

 scutes often entire. Teeth subulate, recurved in jaws and palate. 



Eryx DAUD. (excl. of some species), OPPEL, MERE. Head 

 small, covered with granulate scales, anteriorly with a large 

 rostral scute produced beyond the lower jaw and declivous towards 

 mouth. Maxillary teeth small ; intermaxillary bone edentulous. 

 Eyes small, surrounded by a circle of small scales ; pupil oblong, 

 vertical. Abdominal and subcaudal scutes narrow, in a single 

 row. Tail very short, conical or obtuse. Jugular groove short, 

 sometimes none. 



Sp. Eryxjaculus DAUD., DUM., Anguis jaculus L., HASSELQ., Boa turcica 

 OLIVIER, Voyage dans I'Empire Otkoman, &c. PL 16, fig. 2, Cuv., R. Ani., 

 &d. ill., Rept. PL 27, fig. i ; Greece, Tartary, Arabia, Egypt. Eryx conicus 

 DUM., Boa conica SCHN., Eryx bengalensis GUERIN, Iconogr., Rept. PL 20, 

 fig. I, RUSSELL Serp. I. PL 4, and two other species also from the eastern 

 hemisphere. Eryx Johnii RUSSELL, which is the largest of all, has 

 rhombo'idal scales raised in the middle, and in this somewhat resembles 

 Acrochordus. 



18-2 



