Poromera. 



121 



9. PORO.MERA. 



Poromera, Bouleng. Cat. Liz. iii, p. 6 (1887) ; Moc'iuard, Bull. Soc. 

 Philom. (8) ix, 1897, p. 6. 



Head-shields normal. Nostril pierced between the 

 nasal, two postnasals, and the tirst upper labial. Lowei" 

 eyelid scaly. Collar distinct. Back with large, plate- 

 like, subimbricate scales with strong keels forming con- 

 tiiuioiis lines, sides with small juxtaposed scales ; ventral 

 plates pointed, imbricate, keeled. Digits slightly com- 

 pressed, with tubercular lamellfe inferiorly. Femoral 

 poi'es forming a long series. Tail very long, cylindrical. 



West Africa. 



Apart from tlie numerous femoral pores, this genus repiroduees the 

 characters of Tachydromus, aud has probably been evolved in the 

 West out of Lacerta as the former has in the East ; but whereas there 

 is every reason to believe that Tachydromus is directly derived from 

 Lacerta, the direct ancestors of Poromera would probably fall under 

 the genera Alglroldea or BeJriiitjaiii, or l)oth, as expressed by the 

 following diagram : 



Plafyplacoptts 



W. Africa. 



Poromera. 



I 

 Bedriagaia. 



Taehydromus, Apeltonotus 



Ahjiroides 



Lacerta. 



1. POROMERA FORDII. 



Tachydromus fordii. Hallow. Proc. Ac. Philad. 18-57, p. 48. 



Poromera fordii, Bouleng. Cat. Liz. iii, p. 6 (1887) ; Giinth. Ann. 

 & Mag. N. H. ((>) .Kvii, 1896, p. iij-l ; Bouleng. Proc. Zool. Soc. 1900, 

 p. 449, pi. xxxi, fig. 1 . 



Poromera haugi, MocquurJ, Bull. Soc. Philom. (8) ix, 1897, p. 6. 



