394 ME. G. A. BOULENGEK ON THE VARIETIES OF 



Var. SERPA. 



Lacerta serpa Rafinesque, Caratt. ale. n. Gen. Anim. p. 8 (1810) . 



Lacerta sicula Rafin. 1. c. 



Lacerta olivacea Rafin. 1. c. 



Lacerta puccina Rafin. 1. c. 



Podarcis muralis albiventris et siculus Bonap. Icon. Faun. Ital., Anf. (1836) . 



Lacerta muralis ccerulea Eimer, Verh. phys.-med. Ges. Wiirzb. iii. 1872, Sitzb. p. ix, and Zool. 



Stud. Capri, ii. p. 5, pi. i. (1874). 

 Lacerta muralis neapolitana Bedriaga, Enst. d. Farb. b, d. Eidechs. p. 15 (1874). 

 Lacerta far a glionensis Bedriaga, op. cit. p. 16, pi. — ., and Die Faraglione-Eideehse (1876). 

 Lacerta muralis, vars. striata, elegans, modesta, maculata Eimer, Zool. Stud. Capri, ii. p. 24, pi. ii. 

 Lacerta muralis, var. viridiucellata Bedriaga, Arch. f. Nat. 1877, p. 113. 

 Lacerta muralis neapolitana, part., Bedriaga, Arch. f. Nat. 1878, p. 285, Bull. Soc. Zool. France, 



1879, p. 202, Arch. f. Nat. 1879, p. 274, and Abh. Senck. Ges. xiv. 1886, p. 204. 

 Lacerta muralis, vars. faraglionensis, latastii, viridiocellata Bedriaga, Bull. Soc. Zool. France, 1879, 



pp. 207, 209, 211, pi. ix. fig. 4. 

 Podarcis muralis, vars. albiventris, sicula, dnderleini, maculata, viridiocellata, faraglionensis De Betta, 



Atti 1st. Ven. (5) v. 1879, pp. 389-393. 

 Lacerta muralis maculato-striata, punctato-striata, punctato-fasciata, striato-maculata , maculata, 



reticulata (part.), modesta, concolor, elegans, coeruleo-coerulescens, ccerulescens monaconensis , 



ccerulescens gallensis Eimer, Arch. f. Nat. 1881, pp. 375-389, pis. xiii.-xv. 

 Lacerta serpa, part., Camerano, Mon. Saur. Ital. p. 56 (1885). 



Near Eome the var. serpa occurs in addition to the vars. nigriventris and campestris, 

 but further south the var. campestris is replaced by this very closely related form, 

 which reaches a larger size, and which in many respects differs little from the typical 

 L. miiralis, especially if compared with the southern var. nigriventris. As in the 

 latter, the head is generally more flattened, resembling less that of L. viridis, the 

 temporal scales are smaller, more granular, the collar has the edge even, or, if serrated, 

 less distinctly so than in var. campestris, the difference in size between the vertebral 

 scales and the dorso-laterals is less marked, the subdigital lamellae are usually fewer, 

 and the caudal scales are more truncate posteriorly, their posterior border rarely forming 

 a well-marked angle. But it is distinguished from the typical form and its vars. 

 hrueggemamii and nic/riventris by generally smaller scales, more numerous femoral 

 pores, and longer toes with more numerous lamellae under the fourth. 



The complete passage between L. muralis typica and the var. serpa, so far as scaling 

 is concerned, is well expressed by the following tabulation l : — 







1 





2 





3 





4. 



f 





Forma 



typica . . 



. . 42- 



-62 



29- 



-45 



19- 



-30 



13- 



-25 



22- 



-28 



Var. 



brueggemanni . 



. 51- 



-65 



35- 



-52 



92- 



-30 



17- 



-24 



24- 



-27 



Var. 



nigriventris . 



. 55- 



-71 



37- 



-51 



22- 



-29 



18- 



-23 



27- 



-31 



Var. 





. 58- 



-77 



35- 



-60 



25- 



-35 



19- 



-29 



28- 



-36 



1 1 AT T 









<Tk ~XT- 

















1 1. Number of scales across middle of body. 2. Number of transverse series of scales corresponding to 

 the length of the bead. 3. Number of scales along middle line of gular region. 4. Number of femoral 

 pores. 5. Number of lamellar scales under fourth toe. 



