156 



REPULÍA: SAURIA: IGUANIDAE '^ "^ "^ LEIOSAURUS 



LEIOSAURUS Dumlril and Bibron 



1837 Le iosaurus Duméril and Bibron, Erp. Gen., 4: 241. Type-spec Íes: Leiosaurus Bell i i Dumlril and 



B Ibron. 

 1847 L iosaurus Agassiz (substitute name for Le iosaurus Duméril and Bibron), Nomenclátor Zoologici 



Index Universalis: 212. 

 1857 Aperopr i st i s Peracca, Bol. Mus. Zool. Anat. Comp. Univ. Torino, 12 (295)! 1. Type-species: 



Aperopr ist i s Paronae Peracca. 



Distribution: Argentina and presumably adjacent Brazil. 



Content: In most recent revision by Gallardo, Physis, 22, I56I, II3-II8, five species were 



included. Two of these have been transferred elsewhere, but two others have since been added, 

 leaving total at five. 



Key to the species Clave de especies 



1. Infradigital lamellae smooth or indistinctly 1. Lámelas inf rad ig I tales lisas o indistintamente 



keeled 2 qu i lia das 2 



Infradigital lamellae keeled 3 Lámelas inf rad ig i tales quilladas 3 



2. Venter with broken brown longitudinal lines; no 2. Vientre con líneas pardas quebradas; no hay 



black antehumeral collai bell i i collar negro prehumeral bell i i 



Venter light, without brown longitudinal lines; Vientre claro, sin líneas longitudinales 

 black antehumeral collar present hardens i s pardas; collar negro prehumeral presente- 



- bardens i s 



3. Dorsal scales homogeneous; ventrals smooth; no 3- Dorsales homogéneas; ventrales lisas; no hay 



dorsal or nuchal crests 4 cresta dorsal ni nucal 4 



Dorsal scales heterogeneous, with tubercular Escamas dorsales heterogéneas con escamas 



scales sometimes arranged in rows; ventrals tuberculadas a veces ordenadas en hileras; 



keeled; weak nuchal and dorsal crests of ventrales quilladas; con débiles crestas nucal 



pointed scales ' paronae y dorsal de escamas puntiagudas paronae 



4. Dorsal pattern of arrowhead-shaped dark spots — 4. Diseño dorsal de manchas oscuras con forma de 



catamarcens i s punta de flecha ca tamarcens i s 



Dorsal pattern of broad, transverse dark bands- Diseño dorsal de bandas transversales, anchas y 

 fase ia tus oscuras fase ia tus 



LEIOSAURUS BARDENSIS Gallardo 



1568 Le iosaurus bardens i s Gallardo, Neotropica, 14; 5> 'fig- Type-locality: Altos de Cochicó, 

 Cochicó, Puelén, La Pampa, Argentina. 



Distribution: Provincias de La Pampa and San Juan, Argentina. 



LEIOSAURUS BELL! I Duméril and Bibron 



I837 Le iosaurus Bell i i Duméril and Bibron, Erp. Gen., 4: 242. Type-locality: Mexico, in error. 

 1561 Leiosaurus belli i — Gallardo. Physis, 22: 114. 



Distribution: Santa Cruz, Chubut, Río Negro, Mendoza and Neuquén, Argentina. 



LEIOSAURUS CATAMARCENS IS (Koslowsky) 



1898 Liosaurus catamarcens i s Kns1nw<;ky, Rev. Mus. La Plata, 8: I69, pl. 1. Type-locality: Provincia 



de Catamarca, Argentina. 

 1561 Leiosaurus catamarcens is — Gallardo, Physis, 22: 114. 



Distribution: Western parts of Provincias Mendoza, San Juan, La Rioja and Catamarca, Argentina. 



LEIOSAURUS FASCIATUS D'Orbigny and Bibron 



1847 Leiosaurus fasciatus D'Orbigny and Bibron, Voyage dans L'Amerique Meridionale, 5 (l): 8, pl. 3, 

 figs. 5-7, Type-locality: Río Negro, Patagonia, Argentina. 



Distribution: Patagonia, Argentina. 



