THE LIZARDS OF THE GENUS TACHYDROMUS. 211] 
shields and the median collar-plate, anterior granular and smooth, posterior enlarged, 
imbricate, smooth or faintly keeled, and merging gradually into the collar, which is 
composed of 8 to 11 rounded or obtusely pointed plates, the median smooth, the 
outer feebly keeled. 
Dorsal plates obtusely pointed or rounded behind, in 6 longitudinal series, with 1 
or 2 smaller plates on the median line, or in 8 series in front and 6 behind; sides 
with one upper and 3 or 4 lower series of keeled scales and a median granular area. 
Ventral plates in 8 longitudinal and 22 to 28 transverse series, the outer pointed and 
feebly keeled, the others smooth, broader than long and shaped as in Lacerta vivipara 
30 to 40 plates and scales round the middle of the body. Preanal plate large, 
smooth, entire (males) or longitudinally divided or semidivided (females), bordered 
by one semicircle of small plates. 
Upper surface of limbs with rhombic keeled scales, much smaller than the 
dorsals. 3 femoral pores on each side.' Subdigital lamellz single or partly single 
and partly divided, 19 to 23 under the fourth toe. 
Caudal scales strongly keeled, pointed or shortly mucronate, in somewhat longer 
and shorter whorls alternately, the fourth or fifth of which contains 16 to 20 scales. . 
The scaling of the regenerated tail similar to that of Lacerta vivipara. 
Brown or olive-grey above, uniform or with irregular dark brown spots ; sides with 
a broad dark brown or black band, the upper border of which may show a series of 
indentations ; a dark streak on the canthus rostralis ; usually a more or less distinct 
light, dark-edged streak from the lower eyelid to the shoulder, passing through the 
lower part of the ear-opening, sometimes continued as a series of spots to the base of 
the hind limb. Lower parts yellowish or greenish white. 
Measurements, in millimetres. Wee 2 en A 
From end of snout to vent... =, te 4 55 53 66 65 
Poh Sdn Se ., fore limb ee =e Be 20 I9 — 21 
ead: bs Ss Efe in as: 1673) Gt ae) ay 
Width of head a: a As ae F. sy Ge) 
Depth of head a aie se ae : 6 6— 9 
Fore limb Bt ays ek a ae Ig I9 20 20 
Hind limb Sn of Se a We es O27 eae, 
BOOt eae. 32 Be Be be Lt 12 14 — 14 
Tail Fe 5e 2s a 17 — — — 
I. 3, Chabarovka. 2. 3, Seoul. 3. 9, Kasakewicha (type). 4. 9, Chabarovka. 
Particulars of specimens exanuned.” 
I 2 $6° Lise Babe Osenge ea wi) 
~, Chabarovka, Ussuri + = SSM ey eos 20m On 22™ 31820 
5A 5 5 ee i 54 35 Fim Or 2 yrae TON 22) Bes 2 
Oi, rr 35 ia on O54 OnmE OME OE 2 On OMm2 Aue ohn23 
> bs 3 USP 33h Ota OR tO. 3) 922 
3, Seoul, Corea a Be Ns One Seon 24 On 2h ay (28 
 , Corea oe aie Sid SOmSOm mon On 22) TON 22) 73) 
| ow 
Xo! 
=== = —= T 
! A female from Chabarovka shows an ill-defined fourth pore on the right side. 
2 In addition to these I have examined the type, a female from Kasakewicha, on the Amoor, preserved in the 
Berlin Museum 
