1913.] NATURAL SCIENCES OF PHILADELPHIA. 155 



Type, No. 18,069, A. N. S. P. Bucay, province of Guayas, western 

 Ecuador. July, 1911. S. N. Rhoads. 



Nos. 18,068, 18,070 and 18,064, paratypes, same data. Length 

 16 to 22 mm. All the specimens were found under stones, bark and 

 leaves, in woods. 



This species is apparently related to Bufo cceruleosiictus Giinther,^ 

 but differs in the color-markings. This is hardly due to age, as 

 Giinther gives the upper parts of the body as uniform brownish- 

 black and the lower parts dirty gray-brown. Upper eyelids, sides 

 of trunk and extremities all show small smooth bluish tubercles. 

 His example was 3 inches 6 lines. Boulenger's figure' would show 

 that Giinther's toad cannot be identical. 



Bufo glaberrimus Giinther'' differs in the smooth skin and a rose- 

 colored spot in the groin, the general color being brownish-black. 



Bufo hcematiticus Cope^ has a different coloration, especially a pale 

 spot anterior and beneath the eye. A poor specimen in the collection 

 from Coban (Cope) is not fit for comparison. Cope names var. 

 lachrymans,^ probably only a color form. Its length is 1 inch 6 lines- 



The present species shows some variation in its color markings, 

 and in some examples but few dark spots are present on the back. 

 The latter is also variable as to roughness on its fore part above. 

 {Ccerulea, blue; ocellus, ring; with reference to the color markings 

 on the back.) 

 Bufo chanchanensis sp. nov. PI. V. lower figure. 



Body moderately depressed, width about equal to that of head. 

 Head without bony ridges, though broad and depressed, not con- 

 stricted from rest of body. Snout a little depressed, contour as seen 

 from above obtusely triangular, slightly more than right angle. 

 Eye large, equal to snout in length. Mouth large, rictus extending 

 trifle beyond eye. Lips thin, firm, and jaw edges trenchant. No 

 teeth. Tongue large, free for last * at least, hind edge rounded. 

 Internal nares large. External nares well separated, falling almost 

 in outer fourth of antero-interorbital width. Interorbital depressed, 

 very slightly concave, width little less than twice that of upper 

 eyelid. Lores smooth. No tympanum. Parotids large, slightly 

 separated from eyes, each equals twice length of eye. Along upper 



1 Proc. Zool. Soc, London, 1859, p. 415. Western Ecuador. 



2 Cat. Bafr. Sal. Brit. Mus., 1882, p. 291, PL 21, fig. 1. 



3 Proc. Zool. Soc, London, 1868, p. 483, PI. 37, fig. 2. Bogota. 



4 Proc. Acad. Nat. Sci. Phila., 1862, p. 158. Truando region, Colombia. 

 5L. c. 



