90 



DIPSAS 



DIPSAS TEMPORALIS (Werner) 

 art iculata group 



1909 Lectognathus temporalis Werner, Mitt. Maturhist. Mus. Hamburg, 26: 241. Type-locality: 



Esmeraldas, Ecuador. 

 191^ Leptoqnathus spurrelli Boulenger, Proc. Zool. Soc. London, 1513- 1^3^' Type-locality: Condoto, 



Pefla Lisa, Choco, Colombia. 

 1960 Dipsas temporalis- — Peters, Misc. Publ. Mus. Zool. Univ. Mich., 114; 50- 



Distribution: Pacific coast of South America in Ecuador and Colombia; Atlantic coast of Panama. 



DIPSAS TENUISSIMA Taylor 

 art i culata group 



1554 Dipsas tenuissima Taylor, Univ. Kansas Sci. Bull., 26: 7/1. Type-locality: On Dominical Road in 



swamp , approximately I5 km WSW of San Isidro del General, Costa Rica. 

 1960 Dipsas tenuissima — Peters, Misc. Publ. Mus. Zool. Univ. Mich., 114: 52. 



Distribution: Panama and Costa Rica. 



DIPSAS VARIEGATA (Oumeril, Bibron and Dumeril) 

 var i eqata group 



I854 Leptoqnathus varieqatus Dumeril, Bibron and Dumeril, Erp. Gin., 7= ^77' Type-locality: Surinam. 

 1918 Dipsas varieqata — Gomes, Rev. Mus. Paulista, 10: 525- 



Distribution: Panama and northern South America. 



Content: Three subspecies, according to Peters, I96O, Misc. Pub. Mus. Zool. Univ. Mich., 114. 



Key to the subspecies 



1. Dorsum of head with dark-brown spot clearly 



defined on parietal and occipital region, 

 sutures of head scales outlined in brown-2 

 Dorsum of head unicolor light or with poor- 

 ly defined darker spots on parietals 



tr i n i tat is 



2. Dark-brown spots on head unite on frontals 



to form U-shaped mark, posterior tips of 



"U" often fused to first dorsal blotch 



n ichols i 



Dark-brown spots on head not fused on 

 frontal, do not extend to first dorsal 

 blotch varieqata 



Clave de subespecies 



Dorso de la cabeza con manchas pardo oscuras 

 claramente definidas sobre la region parie- 

 tal y occipital; suturas de escamas cefali- 

 cas lineadas en pardo 2 



Dorso de la cabeza unicolor en tostado 

 claro, con puntos oscuros pobremente 

 definidos sobre las parietales — tr i n i tat is 



Manchas pardo oscura dorso cefalicas 

 unidas, formando sobre la zona frontal, 

 una U, cuya parte posterior f recuentemente 



se fusiona a la primera mancha dorsal 



n icholsi 



Manchas pardo oscuras, dorso cefalicas no 

 unidas sobre la zona frontal y no exten- 



diendose hasta la primera mancha dorsal 



varieqata 



Dipsas varieqata varieqata (Dumeril, Bibron and Oumeril) 



1523 Leptoqnathus robusta L. Muller, Zool. Anz., 57' 155' Type-locality: East Ecuador. 

 I960 Dipsas varieqata varieqata — Peters, Misc. Publ. Mus. Zool. Univ. Mich., 114: I32. 



Distribution: Venezuela, Guianas, Ecuador, and Peru. 



Dipsas varieqata n ichols i (Ounn) 



1933 Sibynomorphus nicholsi Dunn, Copeia, 1933= 193' Type-locality: mid-basin of Chagres 



River and mouth of Pequeni River, Panama. 

 I960 Dipsas varieqata nicholsi — Peters, Misc. Publ. Mus. Zool. Univ. Mich., 114: I37. 



Distribution: Atlantic side of Panama to northwestern Ecuador. 



