HERPETOLOGY OF THE GRAND DUCHY OF BADEN. 17 



adults are of the bright green colour, — var. concolor, Duges,— 

 common, it appears, with German specimens from other localities, 

 though I have found this form scarce on the Kaiserstuhl. Both 

 the young and adult females often exhibit traces of the bilineata, 

 Daud. 



The immigration of this species into the country has evidently 

 taken place by way of the Jura and Bale, and its present sporadic 

 distribution throughout South Germany can be ascribed to its 

 well-known sensibility to cold and damp, and has not resulted from 

 a supposed predilection for any particular soil. The Kaiserstuhl 

 is covered to a large extent with the alluvial Loess, and I have 

 been informed of the occurrence of L. viridis on tracts of this 

 and loamy ground in other districts ; but it appears highly 

 probable that the Sand Lizard, which thrives exceptionally well 

 on this soil, has been the cause of these statements. Prof. 

 Leydig observed that L. agilis preferred the Keuper to the 

 Muschelkalk, and in the Northern Palatinate the Wall Lizard is 

 often conspicuous by its absence on metamorphic rocks, while 

 abundant everywhere on the red sandstone ; still, in spite of this 

 and other negative evidence, I should hesitate in imputing any 

 importance to this factor in the case of L. viridis. 



Its distribution in other parts of Germany is now pretty 



accurately determined. It is found chiefly along the Rhine (at 



Bingen, Rudesheim, St. Goar, Loreley, &c), and its western 



tributaries, the Nahe and Moselle ; as also on the Danube near 



the point where it enters Austria. In the Haardt mountains 



of the Bavarian Palatinate, where an excellent authority (Dr. 



Noll) reports its occurrence, I have failed to detect any traces, 



nor have I been more successful in the course of my excursions 



into other parts of that country, and must certainly agree with 



Medicus* as to its extreme rarity there. Through the kindness 



60 of Mr. Basserman, of Deidesheim, I received a fine male punctata 



^ from that locality, which settles the question formerly raised 



as to its occurrence at this — again apparently isolated — point. 



^ He informs me that it is found in some numbers at two places 



near the town,— the " Konigsbacher Wald" and the "Wald- 



berg." 



Several writers testify to the existence of this species near 



* ■ Thiere der Rheinpfalz,' 1867. 

 ZOOLOGIST. — JAN. 1891. C 



