THE LIZARDS OF THE GENUS TACHYDROMUS. 



233 



series of small scales anteriorly. Ventral plates in 6 longitudinal series, only the 

 outer keeled; 28 transverse series. Sides minutely granular. 42 plates and granules 

 round the middle of the body. Praeanal plate rather small, bordered by one semi- 

 circle of small smooth plates. 



Upper surface of limbs with rhombic keeled scales. 4 femoral pores on each 

 side. 1 23 lamellar scales under the fourth toe. 



Caudal scales strongly keeled and shortly mucronate, the whorls alternately a 

 little longer and shorter, the fourth containing iS scales. 



Olive-brown above, the dorso-lateral area (two rows of plates) lighter ; two 

 blackish streaks, formed of spots close together, along the middle of the back ; a 

 blackish lateral band, from the nostril, through the eye and involving the upper half 

 of the ear-opening, to the base of the tail, dotted with whitish on the body; repro- 

 duced tail reddish. Lower parts white. 



The specimen selected as the type is thus described by Van Denburgh :— 



c 'The colour above is greenish olive, becoming lighter yellowish olive on the 

 limbs and tail. The sides are dark olive brown. A light line, edged above with 

 dark brown, starts at the nostril, crosses the lower eyelid, the lower part of the ear- 

 opening, and fades away above the axilla. • The upper labials, dorsals, limbs and tail 

 are dotted or spotted with dark brown. The lower surfaces are greenish white, 

 tinged with orange on the tail." 



Measurements, in millimetres. 6 1 



60 



3) J? M ?) 



,, fore limb . . 





24 



Head 







17 



Width of head 







9 



Depth of head 







7 



Fore hnib. . 







23 



Hind limb 







32 



Foot 



. . 





17 



Habitat. This remarkable species was described from 13 specimens from Kan- 

 shirei and Taipeh, Formosa ; one of these is now preserved in the British Museum. 

 It has since been reported from Southern China, near Canton, by T. Vogt. 



Tachydromtis chinensis, T. Vogt, Sitzb. Ges. Nat. Fr. Berl. 1914, p. 98, is said to 

 be similar to P. knehnei, but there are only 3 pairs of chin-shields and the ventral 

 plates are obtusely keeled. 3 femoral pores on each side.— Northern parts of the 

 Province Kuangtung, Southern China. 



Apeltonotus, g. n. 



Head-shields normal. Nostril pierced between the nasal, a postnasal, and the 

 first upper labial. Lower eyelid scaly. Collar distinct. Dorsal scales small, hexago- 

 nal, subimbricate, keeled; ventral plates obtusely pointed, imbricate, of median 

 rows smooth or faintly keeled, of outer row strongly keeled. Digits compressed, with 



1 Of the 13 types and co-types, 8 have 4 pores, 4 have 5, and 1 has 4—5.-3 or 4 pores in specimens from Canton 

 according to Vogt. 



