165 

 LEPO SOMA 



LEPOSOMA GUIANENSE Ruibal 



1552 Leposoma quianense Ruibal, Bull. Mus. Comp. Zool., 106: 485, figs. 1-2. Type-locality: Dunoon, 

 Demerara River, Guyana. 



Distribution: Guyana and French Guiana. 



LEPOSOMA PARIETALE (Cope) 



1885 MIonyx parietalis Cope, Proc. Amer. Phil. See, 23: 56. Type-locality: Pebas, Peru. 

 1952 Leposoma parietale — Ruibal, Bull. Mus. Comp. Zool., 106: 452. 



Distribution: Amazonian region of Colombia, Ecuador and Peru. 

 LEPOSOMA PERCARINATUM (Müller) 



1523 Hylosaurus percarinatus Müller, Zool. Anz., 57' 1*6. Type-locality: Peixeboi, Estado do Para, 

 Brazil. 



1923 Leposoma taeniata Noble, Zoológica, 3= 3^3- Type-locality: Kartabo, British Guiana. 



1925 Hylosaurus mueller i Mertens, Senckenberg iana, 7: ](>• Type-locality: Inirida River, southern 



Venezuela. 

 1931 Leposoma percarinatum — Burt and Burt, Bull. Amer. Mus. Nat. Hist., 6I: 349. 

 1952 Leposoma percarinatum — Ruibal, Bull. Mus. Comp. Zool., 106: 49O. 



Distribution: Northeastern South America, in Guyana, Venezuela and Brazil. 



LEPOSOMA RUGICEPS (Cope) 



1869 LoxoDholis ruqiceps Cope. Proc. Acad. Nat. Sc i . Phila., 1868: 3O5. Type-locality: RTo 

 Magdalena, Colombia. 



1880 Leposoma dispar Peters, Monats. Akad. Wiss. Berlin, 1880: 21/, pi. 3O9, fig. 2-2c. Type- 

 locality: Caceres, Cauca, Colombia. 



1952 Leposoma ruqiceps — Ruibal, Bull. Mus. Comp. Zool., 106: 487. 



Distribution; Colombia north and east of Andes; Panama. 

 LEPOSOMA SCINCOIDES Spix 



1825 Leposoma scincoides Spix. Spec. Nov. Lacert. Bras.: 24, pi. 27, fig. 2. Type-locality: Banks of 



Rio Amazon, Braz i 1. 

 1962 Leposoma sci nco i des — Ruibal, Bull. Mus. Comp. Zool., 106: 48$. 



Distribution: Northern and central Brazil. 



LEPOSOMA SOUTH! Ruthven and Gaige 



1924 Leposoma south i Ruthven and Gaige, Occ. Pap. Mus. Zool. Univ. Mich., 147: 1. Type-locality: 



Progreso, Chiriqui Province, Panama. 



Distribution: Panama to Costa Rica. 



Content: Two subspecies. 



Key to the subspecies Clave de subespecies 



1. Seven dorsal scale rows; guiar scales 1. Siete filas de escamas dorsales; escamas 



smaller and more numerous; third chin guiares pequeñas y numerosas; tercer 



shield single; 26 scales around middle escudo mental único; 26 escamas al medio 



of body; femoral pores 7-7 south i del cuerpo; poros femorales 7-7 southi 



Five dorsal scale rows; guiar scales larger Cinco filas de escamas dorsales; escamas 

 and fewer in number (2-4 rows); third chin guiares mayores en numero bajo (2-4 filas): 

 shield replaced by two scales; scales tercer escudo mental reemplazado por dos 



around middle of body fewer than 26; escamas; escamas al medio del cuerpo menos 



femoral pores 4-4 - orientalis ¿g 26; poros femorales 4-4 orientalis 



