THE LIZARDS OF THE GENUS TACHYDROMUS. 



221 



through the lower part of the ear-opening, to the shoulder, sometimes continued on 

 the side of the body. A black streak on the hinder side of the thigh. Lower parts 

 yellowish or greenish white. 



Measurements, in millimetres. 

 From end of snout to vent 



,, „ ,, fore limb 



Head 



Width of head 

 Depth of head 

 Fore limb 

 Hind limb 

 Foot 

 Tail 



i. 2 , Taiwanfoo, type. 

 type of T. stejnegeri . 5. J 



2. J , C. Formosa, type. 3. ? 

 Punkiho. 6. 2 , Kanshirei. 



Particulars of specimens examined. 



I. 



2. 



3- 



4- 



5- 



6. 



41 



45 



44 



50 



45 



52 



16 



17 



17 



21 



18 



19 



10 



12 



10 



13 



11 



12 



6 



7 



6 



8 



7 



7 



5 



6 



5 



6 



6 



6 



14 



15 



15 



18 



16 



16 



20 



22 



21 



26 



23 



23 



11 



12 



10 



15 



13 



13 



.. 87 



— 



122 



165 



138 



140 



, C. Formosa, 



type 



4 



• c? 



, Taipeh, co- 



Taiwanfoo, type . . 

 Central Formosa, type 



I. 



2. 



3- 



4- 



5- 



6. 



7- 



8. 



9- 



41 



36 



8 



10 



32 



10 



23 



2 



24 



45 



35 



7 



8 



29 



12 



22 



2 



25 



46 



36 



7 



10 



30 



10 



24 



2 



24 



44 



37 



8 



10 



3i 



11 



28 



2 



24 



4i 



38 



7 



10 



30 



11 



29 



2 



24 



50 



34 



6 



8 



28 



11 



26 



1 



29 



47 



36 



7 



10 



29 



11 



26 



1 



26 



45 



35 



7 



10 



27 



11 



20 



1 



25 



32 



34 



7 



10 



22 



12 



25 



1 



25 



52 



33 



8 



10 



30 



10 



23 



1 



24 



44 



37 



8 



8 



30 



12 



25 



1 



24 



f , Taipeh, co-t3'pe of T. stejnegeri. 

 ,, Tainan, ,, 



, , Punkiho 



?, 



,, Kanshirei ' 

 ., Tamsui 



Table as on p. 212. 



Habitat. Formosa and Pascadores Islands. 



T. formosanus is very closely allied to T. septentrionalis , differing in the presence 

 of 6 series of large plates along the back instead of 4, and by the frequent presence 

 of 10 series of ventral plates instead of 8. The size is smaller and the green colour is 

 absent from the sides. I am convinced that Van Denburgh's proposal to separate 

 this species into two, one with normally two femoral pores (T. formosanus) , the other 

 with one (T. stejnegeri) is untenable, the general agreement being too great and the 

 supposed distinctive characters too slight and too inconstant to justify such a course. 



6. Tachydromus khasiensis, sp.n. 



Tachydromus sexlineatus, part., Bouleng. Cat. Liz. iii, p. 4 (1887), and Faun. Ind., Rept. ; p. 169 

 (1890) ; Giinth. Ann. and Mag. N.H. (6) i, 1888, p. 167. 



Body scarcely depressed. Head about if times as long as broad, its depth 

 equal to the distance between the centre of the eye and the tympanum, its length 



J This specimen was received from the Museum of the California Academy under the name of T. stejnegeri. Yet in 

 his description Van Denburgh refers all the specimens from Kanshurei to T. formosanus, thus showing the uncertainty 

 in distinguishing the two supposed species. The author rightly observed that unfortunately no one of the distinctive 

 characters is absolutely constant in all specimens. 



