On new South- American Reptiles. Ill 



orbital part of head ; interocular width 3 times the diameter 

 of eye and twice the distance between the nostrils; maxillary 

 barbel extending a little beyond the base of pectoral. Skin 

 of head and anterior part of body covered with small 

 tubercles. Dorsal I 6 ; spine not serrated, \ the length of 

 head ; length of adipose fin l-^- in its distance from the dorsal. 

 Anal 12. Pectoral as long as the head, nearly reaching the 

 ventral, its spine | as long, and with 8 or U strong serra- 

 tions on the inner edge. Caudal deeply notched. Caudal 

 jieduncle 2^ as long as deep. Olivaceous ; two broad dark 

 brownish transverse bands, one below the dorsal, the other 

 below tiie adipose fin ; dorsal with an intramarginal series of 

 dark spots ; anal and pectorals with similar but less distinct 

 spots; small dark spots on the caudal. 



Hah. Tunting. 



A single specimen, Go mm. in total length. 



This is the first Chinese species of the genus Glypto- 

 sterjium to be described. Of the Indian species with \vhich 

 1 have compared it, it is nearest to G. botia, Ham. Buch. 



EXPLANATION OF PLATE IV. 



jFk/. 1. Gymnostomiis kreijenberyii. 

 Fig. 2. Gobio ivolterstovffi. 

 Fig. 3. Glyptosterman sinetise. 



XVI. — Descriptions of new South-American Reptiles. 

 J3y (i. A. BouLENGER, F.R.S. 



Lepidohlephavis p>eracca^. 



Upper parts and throat covered with uniform very small 

 granules, smallest on the back of the head and on the throat, 

 largest on the sr.out*; lower parts and tail covered with 

 large, imbricate, cycloid, smooth scales (18 across the middle 

 of the body). Rostral and symphysial shields large, the 

 former with short median cleft above, the latter with two 

 clefts behind ; four upper and three lower labials, first very 

 large. Upper eyelid and limbs as in L. festo', Peracca. 

 Dark brown above, paler brown beneath, blackish on the 

 upper part of the sides ; a whitish streak on each side, from 

 the eye to the base of the tail, where it unites with its fellow; 

 upper surface of head with dark symmetrical markings. 



* In L. festcp, of wliich one of the types has been entrusted to me for 

 comparison by Count Peracca, the largest granules are on the back. The 

 specnnen from Cliimbo, N.W. Ecuador (Coll. Rosenberg), in the British 

 Museum, di libra in having the dorsal granules unequal in size 



