Cope.] 86 [July 20, 
the heel reaching to the tympanum. Two rather small tarsal tubercles, 
no tarsal fold. Soles rough, the palmation measuring the middles of the 
shorter toes. The tongue is small and narrow ; the ostia are a little smaller 
than the choane. 
Length of head and body, .054; of head, to posterior line of tympana, 
013 ; width of head at do. .018 ; length of hind leg, .071 ; of hind foot, .035. 
The color is a light or dark deer brown, with a light vertebral band 
(rarely absent). On each side of the latter are large brown spots with nar- 
row pale borders. A dark band extends from the orbit to the middle of the 
side, and above it a broad pale band extends to the groin ; inferior surfaces, 
uniform light yellow. 
This species differs from the B. argillaceus in its strong cranial crests, 
projecting muzzle, and large paratoid glands; in the last two characters, 
and in the narrow frent, from the B. sternosignatus. 
West Tehuantepec, Sumichrast. 
HynA SPILOMMA Cope. 
Fingers free ; vomerine teeth in transverse series behind line of poste- 
rior nares ; skin thickened above ; tympanum two-fifths eye ; frontal bones 
osseous in front ; eye spotted with yellow. 
This species is remarkable for the ossification of the anterior portion of 
the fronto-parietal bones, which are in contact on the middle line near to 
the ethmoid bone. Posteriorly they are separated, leaving a fontanelle, 
which represents the posterior portion of the usual one. The species in 
this respect approximates the genus Scytopis. 
The head is broad, and the muzzle very short; the canthus are obso- 
lete. and the nostrils a little nearer the end of the muzzle than the orbit. 
The tongue is wide and entire, and the choane small. The palettes are 
nearly as large as the tympanic disc, and, the toes are quite short, and only 
about half webbed. The heel of the extended limb only reaches the pos- 
terior portion of the orbit. 
The superior and lateral integument is thickened and studded on the 
back with rather large, obtuse, warts. The length of head and body is, 
.038 ; of head including tympana, .011; width of head at do., .014; length 
of hind leg, .052; of hind foot, .023. 
The color in these specimens is a light purplish brown, without varia- 
tions, excepting in one instance. In this one the darker dorsal region is 
separated from the sides by a broad blackish band which extends from 
above the tympanum to the groin on each side. The iris is colored in a 
manner which I do not find in any other species. The pupil appears 
cruciform, and the interspaces are golden, with a black spot in the outer 
margin. 
This species belongs to the series without webs between the fingers. 
Among these-it is distinguished by the posterior position of the vomerine 
teeth, moderate tympanum, etc. 
From Cosamaloapam Vera Cruz, from Francis Sumichrast. 
