125 



REPTILIA: SAURIA: ANGUIDAE 'A ^ ^ GERRHONOTUS 



GERRHONOTUS Wiegmann 



1828 Gerrhonotus Wiegmann, Isis von Oken, 21: 379- Type-species: Gerrhonotus tessellatus Wiegmann. 

 I83O Pteroqastenes Peale and Green, Jour. Acad. Nat. Sc i . Phila., 6: 234. Type-species: 



Pteroqastenes ventral is Peale and Green. 

 1838 El gar i a Gray, Ann. Mag. Nat. Hist., (l) 1: 35O. Type-species: Cordylus ( Gerrhonotus ) 



mult icar inatus Blainville. 

 I838 Bar i s ia Gray, Ann. Mag. Nat. Hist., (l) 1: 3')0. Type-species: Gerrhonotus imbr icatus Wiegmann. 

 1843 Trachypelt is Fitzinger, Syst. Rept.: 21. Type-species: Gerrhonotus mult icar i natus Blainville. 

 1843 Tropi doqerrhon Fitzinger, Syst. Rept.: 21. Type-species: Gerrhonotus rud icoll is Wiegmann. 



1845 Pteroqasterus Gray (emendation of Pteroqastenes Peale and Green), Cat. Liz. Brit. Mus.: 53- 



1846 Tropi dcqerrhum Agassiz (corrected spelling of Trop i doqerrhon Fitzinger), Nomenclátor Zoológica 



Index Universalis: 2O3. 

 I878 Mesasp is Cope, Proc. Amer. Phil. Soc, I7: 96- Type-species: Gerrhonotus morelet i i Bocourt. 



Distribution: Central Texas throughout Mexico and Central America to Panama. 



Content: Twenty species, of which only two are found within limits of this work. 



Comment: Gerrhonotus modestus (Cope) was supposedly from Guatemala, but it is known only 

 from Mexico. 



Key to the species Clave de especies 



1. Prefrontals usually absent; 18-20 longi- 1. Prefrontales usualmente ausente; 18-20 filas 



tudinal dorsal scale rows morelet i i longitudinales de escamas dorsales morelet i i 



Prefrontals usually present; 14-16 longi- Prefrontales usualmente presentes; 14-16 filas 



tudinal dorsal scale rows mont icolus longitudinales de escamas dorsales — mont icolus 



GERRHONOTUS MONTICOLüS Cope 



I877 Gerrhonotus mont icolus Cope, Proc. Amer. Phil. Soc, I7: 97- Type-locality: Pico Blanco, 



Costa Rica. 

 1907 Gerrhonotus alfaroi Stejneger. Proc. U. S. Nat. Mus., 32: 5O5. Type-locality: Santa María 



de Dota, Costa Rica, 2000 m. 

 1956 Barisia mont icola — Taylor, Univ. Kansas Sc i . Bull., 38: 208, figs. 54-5$. 



Distribution: Costa Rica to Chiriqui, Panama. 



GERRHONOTUS MORELET I I Bocourt 



I87I Gerrhonotus moreletii Bocourt, Bull. Nouv. Arch. Mus. Hist. Nat. Paris, J: 102. Type-locality: 

 Peten and pine forests of Alta Verapaz, Guatemala. 



Distribution; Guatemala to Mexico. 



Content: Five subspecies, one ( temporalis Hartweg and Tihen) extral im i tal. 



Key to the subspecies Clave de subespecies 



1. Upper and lower postnasal in contact 2 1. Posnasales superiores e inferiores en 



contacto 2 



Upper postnasal separated from lower by 

 contact between loreal and nasal — raf ael i Posnasales superiores separados de los 



inferiores por contacto entre loreal y 



2. Lowest primary temporal usually in contact nasal raf ael 1 



with two lower secondaries; prefrontals 



usually present; posterior loreal normally 2. Temporal primaria más baja, frecuentemente 



in contact with supralabials 3 en contacto con las dos más bajas secund- 



Lowest primary temporal usually contacts arias; prefrontales usualmente presentes; 



only lowest secondary temporal; prefron- loreal posterior normalmente en contacto 



tais usually absent; posterior loreal con supralab iales 3 



usually not in contact with supralabials — Temporal primaria más baja, frecuentemente 

 salvadorensis en contacto con sólo la más baja secund- 

 aria; prefrontales usualmente ausentes; 

 loreal posterior normalmente no contacta 

 con supralab iales sal vadorens i s 



