396 



In the region east of the Canal Zone two or possibly three 

 races are to be found. All are modern specimens. They come 

 from Cerro Azul near the Canal Zone (U. S. N. M. no. 54183-4, 

 54186-96, all young); Rio Jappe, Darien (U. S. N. M. no. 

 53964-5, young); Pirri Range, Darien (U. S. N. M. no. 50230-48, 

 all adult); Cana, Darien (U. S. N. M. no. 50168-75, 50226, 54230, 

 and 66316. The last is very young) ; Porto Obaldia, Darien (U. S. 

 N. M. no. 48594-5, adult); Mt. Sapo, Darien (M. C. Z. no. 8538, 

 type of Atelopus spurrelli certus Barbour and many paratypes). 



Of these, the specimens from Cerro Azul, Rio Jappe, Pirri 

 Range, and Cana, if due regard be paid to age changes, are the 

 same. The young have Hght bellies ^with a few small spots; 

 dorsally they are brown with the legs barred with light and a 

 couple of linear yellow marks or bands in the shape of inverted 

 U's or Vs. The adult has an immaculate light belly, and either a 

 uniform brown dorsum, or with tiny Hght dots, circles or semi- 

 circles. 



For this race I propose the name Atelopus varius glyphus, the 

 type of which is U. S. N. M. no. 50320 from Pirri Range, Darien. 



The Porto Obaldia specimens have the same markings as the 

 small young from Cana, but they are as large as Cana adults. 

 Possibly they should be considered a separate race, but since 

 only two specimens are known, I prefer to consider them glyphus 

 for the time being. 



The Mt. Sapo specimens, of which Barbour and Brooks took 

 nearly fifty, were brick red in life, with considerable spotting 

 below in males (females almost immaculate). Above the light 

 color was reduced to fine lines which surround rounded black 

 spots (larger in males than in females). 



Barbour says they have 'no marked structural differences from 

 varius' with which I agree entirely, having just carefully com- 

 pared some San Jose varius with a paratype of certus, but he 

 says 'it lacks the inherent quality of varius, which is variability.' 

 I cannot agree that varius at San Jose, or even over a wide 

 range in Costa Rica is any more variable than is certus on Mt. 

 Sapo. I have seen true varius from some nineteen localities, 

 and all were alike, save for the occasional bluish gray ground 

 color, which seemed to crop up in several localities. Also, the 

 specimens and figures of maculatum and dumerilii collected over 



