Tachijdroma^. 



lol 



cauthus 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-opeuiug, sometimes continued as a series of spots 

 to the base of the hind limb. Lower parts yellowish or greenish white. 

 Measurements (in millimetres) : 



1. Length from snout to vent (in millimetres). 2. Scales and plates round 

 middle of body. 3. Longitudinal series of dorsal plates and scales. 4. Longi- 

 tudinal series of ventral plates, o. Transverse series of ventral plates. 6. Plates 

 in collar. 7. Gular scales in a straight median line. 8. Femoral pores on each 

 side. 9. Lamellar scales under fourth toe. 



Same explanation for the following tables. 



In addition to the above, I have examined the type, a female from 

 Kasakewicha, on the Amoor, preserved iu the Berlin Museum. 



Habitat. — South-Eastern Siberia, Manchuria, Corea. 



T. ainurensis is the most iftc«r/(t-like species of the genus, and its 

 agreement in many respects with L. vivipara is the more noteworthy 

 for the fact that the latter is the only species of Lacerta which extends 

 eastwards to the Pacific Ocean.* The agreement is not only in the 

 shape of the head, body and limbs, and the comparatirely short tail, 



* The easternmost specimens of that species show, on an average, a lower 

 number of femoi-al pores (5 to 11) than the western. 



