254 



BULI.ETIX 15 4, UXITED STATES XATIOXAL MUSEUM 



lions that are identical with or tendin<^ towards those found in 

 Ameiva ameiva anneiva. This bears sijLfnificance in view of the fact 

 that some of these characteristics are not found elsewhere in the 

 lemniscatus group and most of them do not appear in the remaining 

 forms of the genus Ciiemidophotus. 



That there are probabl}'' missing links between C nemklovliorus 

 muHnus niutnnus and Ameiva ameiva ameiva^ and hence between 



jainhevmae caeruleus 



I 



HYPERYTHRUS GROU? 



TESSELLATUS GROUP 



£er£ 



\tXXJlS 



ju Varvi ► sex'\vng-\W^ 



5EXLINEATUS CROUP 



DEPPIl GROUP 



oce lUter 



ANttsToai. Stock of /xl 



Not>TM AwtOlCAN GaoUP 





Tnur\T\us 



LEMHISCATUS GROUP 

 (South Amarica) 



Ancestoal Cngiaioopmoou* 

 Stock 



I'lGURE o7. — Diagram of the supposed relationships within the <iENUs Cne.mi- 

 DOPHORDS. Group names, places at the point of probable origin, are in 



CAPITAL letters AND SPECIFIC NAMES, PLACED ACCOBDINO TO THEIR MODERN 

 POSITION, ARE UNDERLINED. ARROWS INDICATE THE DIRECTION OF PHYLOGENETIO 

 DEVELOPMENTS 



the genus G nemido plwrus and the genus Ameiva^ is indicated by the 

 fact that murlnus presents a number of noticeable variations from 

 Ameiva ameiva ameiva^ such as a smaller maximum size, a higher 

 average number of femoral pores, a reduced lingual sheath, a heart- 

 shaped scaly portion of the tongue, and the development of anal 

 spurs. Although some of these modifications have been subsequently 



