40 MR. E. G. BOULE.NOEK ON 



young are beautifully sti'iped with dai"k brown or black, some 

 specimens may even be descril:)ed as black above with 5 or 6 light 

 longitudinal streaks. Traces of this striation may persist in some 

 males, but usually disappears entirely, the back being uniform 

 brownish or dull green, with small blackish spots or vermicular 

 lines on the sides. The figui'es annexed to this description will 

 give an idea of the gorgeous colours assumed by the adult male 

 during the breeding-season, making it one of the most beautiful 

 of the European Lizards. The top of the head is of a reddish 

 brown, sharply contrasting with the gTeen colour of the nape, 

 which gradually chaiiges to olive or brown on the postei'ior part 

 of the body ; the sides of the head and body and the lowei- pa.rts 

 are of a bright vermilion-oi'ange, relieved bya patch of azure-blue 

 in the axillary region and a broad band of the same colour occupying 

 the outer row of ventral shields and extending a, little way tip on 

 the scaly part of the side. The female is of a reddish brown, 

 with two broad blackish bands along each side, the outer proceeding 

 from the eye, bordered above and below by a narrow whitish 

 strea,k and separated by a third light strea.k which in some 

 specimens is pale yellow, in others pale green ; a small round 

 blue spot is present above the axil ; the hind limbs bear round 

 light spots edged with blackish ; the lower parts are white or 

 pale yellow, often tinged with rosy or lilac on the sides. 



Bel'itionships. 



Lacerta peloponnesiaca is most nearty related to L. tanHca. a.nd 

 with it fills the gap between the massive Lizards like L. agilis 

 and L. viridis and the forms that cluster round L. vitivalis. In its 

 thick, convex skull and its well-developed pterygoid teeth, as well 

 a,s in its temporal scutellation, it agrees with the former group, 

 which I 'regard as the most gener-alized, whilst in its scaling and 

 especially in its non-serrated collar it agrees very closely with the 

 typical L. mic^'alis, from which some authors have held it to be 

 probably derived. 



EXPLANATION OF PLATE L 

 harerta pelopnnnesiara, male and female, natural size. 



4 R-einark.'' on Two Species of Fishes of the Genus Gnbius, 

 from Observations made at Roscoff. By Et>ward G. 



BOULENGER *. 



f^Received Ootolier 30, If) 10: Read November 15, 191(.).] 



Prof. F. Guitel, in his well-known paper on the breeding- 

 habits of Wohiiis mmu.tns'^, remarks that tl"io doscriptions of this 



* {'oniniuiii(.-Hted by (j. X. BurLUNOicn. F.R.S., V.P.Z.S. 

 t Arch. Zool. Exp.'ft-t (ivn. x. 1R,Q2, p. \m. 



