1900.] AST) BATRACF.IANS FROM BORNEO. 185 



Amblycephalus nuchalis. (Plate XVII. tigs. 1, 1 6.) 



Rostral as deep as broad ; internasals narrow, band-like, hardly 

 one-third the length of the prefrontals ; frontal once and two- 

 thirds as loug as broad, twice as long as its distance from the end 

 of the snout, once and a half as long as the parietals, which are 

 followed by a pair of nuchals ; prefrontal entering the eye ; loreal 

 as long as deep, not entering the eye ; two prseoculars, two post- 

 oculars, and a series of three narrow suboculars ; three superposed 

 anterior temporals ; eight upper labials, eighth very long : first 

 lower labial in contact with its fellow behind the symphysial ; 

 three pairs of large chin-shields, anterior a little broader than long. 

 Body strongly compressed ; scales in 15 rows, dorsals very feebly 

 keeled, the keel double on the enlarged vertebral series. Ventrals 

 195 ; anal entire ; subcaudals 105 ( <$ ). Pale buff, with narrow 

 brown transverse lines and scattered dark brown dots : a large 

 black blotch on the nape, sending forth on each side a linear 

 branch to the eye ; a black vertical line below the eye, another on 

 the temple. 



Total length 490 millim. ; tail 125. 



Matang. Type in the Sarawak Museum. 



Rhacophorus sheleordi. (Plate XVII. fig. 2.) 



Vomerine teeth in two long, nearly straight transverse series in 

 the middle between the moderately large choanse. Snout pointed, 

 as long as the diameter of the orbit ; nostril equally distant from 

 the orbit and the end of the snout : canthus rostralis strong ; 

 loreal region slightly concave : interorbital space broader than the 

 upper eyelid ; tympanum distinct, three-fifths the diameter of the 

 eye. Fingers webbed to the disks, which are considerably smaller 

 than the tympanum ; toes webbed to the disks, which are smaller 

 than those of the fingers ; subarticular and inner metatarsal 

 tubercles very small : no tarsal fold. The tibio-tarsal articulation 

 reaches between the eye and the nostril. Skin smooth above, 

 granulate on the belly. Purplish brown above ; a dark band 

 across the snout, another between the eyes, and three across the 

 back ; an X-shaped dark marking on the scapular region ; loreal 

 and temporal regions blackish ; a fine yellow line on each side of 

 the head from the tip of the snout along the canthus rostralis and 

 superciliary edge to above the tympanum ; sides of body yellowish, 

 with a blackish network; limbs with dark cross-bands; sides of 

 thighs blackish, closely speckled with white; web between toes 

 marbled with blackish ; lower parts colourless. Male with internal 

 vocal sacs. 



From snout 45 millim. 



Penrissen Mt. Type in the British Museum. 



This species is closely allied to It. fasciatus Blgr. 



Ixalus petersi. (Plate XVII. tig. 3.) 



Snout rounded or obtusely pointed, as long as the diameter of 

 the orbit ; canthus rostralis distinct; loreal region concave; nostril 

 a little nearer the end of the snout than flic eye: interorbital 



