36 
ZOOLOGY OF THE VOYAGE OF THE BEAGLE, 
Borboroc(etes Grayii. Mihi. 
Plate XVII. — Fig. 2. 
Dentihus palatinis in fasciculis subcontiguis paiild obliquis, pone nares posteriores 
positis ; palmis non tuber ciilatis. 
Habitat, Valdivia. 
This species considerably resembles the former in most of its characters. 
The palatine teeth, however, form at once a certain and tangible distinction, and 
there are some minor points in which they differ, sufficient at a glance to deter- 
mine them. The head in the present animal is broader than it is long; in the 
former the breadth is only equal to its length. The palms are in this species 
without conspicuous tubercles ; in the other there are two, although very small. 
In colour it differs much from the former. The general colour is a rich 
fuscous brown, rather paler beneath ; the flanks, the throat and belly, and the 
whole of the thighs and legs, with various white markings, those of the throat 
and belly being the smallest. This species was found in the forest, in Valdivia. 
Genus — PLEURODEMA. Tschudi. 
I have thought it right to follow Tschudi in separating from the genus 
Cystignathus of Wagler, such species as have large and conspicuous lumbar 
glands, particularly as they all agree in possessing a much more bufonine aspect 
than the others. The discovery of three new species, all agreeing in these 
characters with Pleurodema JBibronii of Tschudi, increases the importance of the 
grounds upon which this separation is made. 
Pleurodema Darwinii. Mihi. 
Plate XVII.— Fig. 3. 
Dentibus palatinis paucis, minimis ; lingua subcordatd, vix emarginatd ; glandidis 
lumborwn magnis, rotimdis, convexis ; digitis posticis ad basin tantimi membrand 
connexis ; dorso sparsim tuberculato-glaiiduloso ; supra pallidh viresceus, maculis 
fusco-olivaceis. 
Habitat, Maldonado. 
