168 ME. G. A. BOULENGEE ON THE 



Lacerta littoralis Lehrs, Zool. Anz. 1902, p. 230; Werner, Verb, zool.-bot. Ges. Wien, lii. 1902, 



pp. 382 & 381. 

 Lacerta littoralis, var. livadiaca Werner, Verb, zool.-bot. Ges. Wien, lii. 1902, p. 383. 

 Lacerta fiumana Werner, Bl. f. Aq.- u. Terr.-K. xvi. 1905, p. 65, and Wiss. Mitth. Bosn. Herzeg. x. 



1907, pp. 660 & 666; Kammerer, Arcb. f. Entwicklmech. xxix. 1910, p. 474, pi. xv. ; 



Klaptocz, Zool. Jahrb., Syst. xxix. 1910, p. 417. 

 Lacerta fiumana, var. imitans Werner, Mitth. Naturw. Ver. Univ. Wien, vi. 1908, p. 49. 



I will first give a description of the widely distributed form, from the Austrian 

 Littoral, Croatia, Dalmatia, Bosnia, Herzegovina, and Montenegro, and various islands 

 on the coast of Istria and Dalmatia, to which the above synonymy pertains, and then 

 refer to some insular forms which are evidently derived from it, and which have been 

 described as vars. lissana, melisellensis, and galvagnii. 



The typical var. fiumana which, in size and coloration, may be regarded as 

 connecting the var. cam^pestris with the forma tt/pica, is hardly to be distinguished 

 from the former, especially if compared with specimens from Piedmont, where the 

 var. campestris does not reach so large a size as on the East Coast of the Adriatic. It 

 is very easy to distinguish it from the var. serpa as occurring on the East Coast of the 

 Adriatic and on several of its islands, but when Italian examples of the var. campestris 

 are taken into consideration, the gaps between the two extremes disappear, and a 

 continuous series connecting the two is seen to exist. This variety is also very closely 

 related to L. taurica Pall., especially through the form described by Lehrs iis L.ionica, 

 as I have shown on a previous occasion *. Werner f has even hinted at the possible 

 specific identity of his L. fiimiana with L. taurica and X. ionica, as had been suggested 

 by Wiegmann J, who alluded to this lizard under the name of Podarcis merremii^iiz., 

 (non Merr.), a MS. name under which L. fiumana has often appeared in the past. 

 However, the constant presence of pterygoid teeth in L. taurica § is, in my opinion, 

 sufficient to retain that form as a species, which fills in the gap between the more 

 primitive group of L. agilis and L. viridis and L. muralis. 



The following description is almost a repetition of that of the var. campestris, and 

 it is to me often a matter of difficulty to distinguish small specimens of that form from 

 striated specimens of the ^?iX. fiumana. The number of scales across the body appears 

 to be the most important diagnostic character, although there is an overlap. 



Head small, its length of to 4j times in length to vent in males, 4^ to 4f times in 

 females ; either flat above, as usual in the typical form, or as convex as in var. cam- 

 festris, its depth equal to the distance between the anterior corner or the centre of the 

 eye and the anterior border of the tympanum, its width once and a half to once and 

 three-fourths in its length ; snout obtusely pointed, as long as or a little longer than 

 postocular part of head. 



* P. Z. S. 1907, p. 557. t Bl. f. Aq.- -u. Terr.-K. xvi. 1905, p. 74. J Arch. f. Naturg. 1837, ii. p. 222. 

 § I Lave not found these teeth in any specimens oi^&x. fiumana, anymore than in the typical form. They 

 are rarely present in the vars. campestris and serpa. 



