4 ZOOLOGY. 
nares. The openings for the tubes of eustachii are smaller and less conspicuous than the inner 
nares. The subgular air-bladders are very much developed. The anterior limbs, when 
stretched backwards alongside with the body, bring the tip of the inner finger close to the 
groin, beyond which, consequently, the other fingers extend. The fingers are slender, and 
their tips slightly swollen. The innermost is stoutish, and shorter than the second, which is 
shorter than the fourth—the third being the longest. The palm of the hand is provided with 
quite large tubercles ; that at the base of the inner finger is the largest of all. The first pha- 
langes are marked beneath by similar tubercles, though more regularly conical in their shape. 
The tubercles under the second phalanx of the third and fourth fingers are quite reduced. The 
posterior limbs are long and slender, measuring nearly two inches from their origin to the tip 
of the longest toe. The foot is narrow, and likewise slender, as well as the toes, which are 
free, there being but a rudimentary webbing to be observed between the three middle ones. 
The sole of the foot is smooth ; the inner metatarsal tubercle is rather small and conical, and 
the outermost still smaller and inconspicuous, Small tubercles exist under the articulation of 
the first and second phalanges, except under the inner toe. The second toe is shorter than the 
fifth, whilst the third is longer than the latter. The fourth is much the longest. The inferior 
surface of the thighs alone is granular or warty; the skin elsewhere is perfectly smooth, save 
minute pores which may be observed about the tympanum and on the sides of the back, where 
they constitute a narrow band, extending from the occiput to near the groins. The ground 
color is olivaceous or greenish yellow. The region between and behind the eyes exhibit traces 
of black markings which cannot be defined upon the specimen before us. There is a black, 
narrow vitta along the line of the canthus rostralis, terminating anteriorly by an expansion 
over the nostrils posteriorly ; the vitta when reaching the eye sends off a tapering branch along 
the inferior rim of the orbit, behind which the vitta reappears considerably broader, and pass- 
ing over the tympanum terminates above the insertion of the anterior limbs. From the upper 
and posterior part of the orbit, above the tympanum, originates a blackish stripe, which extends 
to the posterior extremity of the body, covering entirely the series of dorsal pores above alluded 
to. The bands from either side converge in their extension. The limbs above are barred with 
greyish black. The inferior surface of head, body, and limbs is of a uniform dull yellow hue. 
This species was obtained in the vicinity of Santiago, Chile. 
Plate XXXIV, fig. 8 represents the profile of Cystignathus taenvatus , of the size of life. 
fig. 9 is a view from below. 
fig. 10, inferior surface of the hand. 
fig. 11, inferior surface of the foot. 
Figs. 10 and 11 are slightly magnified. 
FAMILY OF HYLIDS. 
Genus PHYLLOBATES, Dum. & B. 
Gen. cHar. Snout protruding over the lower jaw; tongue free posteriorly upon a considera- 
ble portion of its length ; no teeth on the palate ; tympanum visible ; tubes of eustachii small ; 
fingers and toes slightly depressed, entirely free, dilated upon their extremity into a disk 
slightly convex below and above, the latter surface being provided upon its middle with a 
small groove. Protrusion of the first cuneiform bone very little developed ; transverse apo- 
physis of the sacral vertebrae not dilated. 
Syn. Phyllobates, Dum. & B. Erp. Gén. VIII, 1841, 637. 
Oxs. The shape of the snout reminds us of Elosia, but the latter is provided with palatine teeth. 
