REPTILES. 39 



Pleurodema bufoninum. Mihi. 



Plate XVII.— Fig. 5. 



Dentibus palatinis prominentibus, in fasciculis binis ovalibus, obliquis, dispositis ; 

 lingua subcordiformi, subeniarginata ; glandulis lumborum maximis, ellipticis, 

 planis ; digitis posticis dimidio fere palmatis, marginatis ; dorso glandulis parvis 

 instructo, fusco-griseo maculis, nigris, lined longitudinali pallida. 



Habitat, Port Desire, Patagonia. 



Description. — Head short. Muzzle rounded. Eyes prominent. Tongue thick, slightly heart- 

 shaped, scarcely notched on the posterior margin. Palatine teeth prominent, in two oval 

 groups, converging backwards. Tympanum rather small, perfectly round, conspicuous. Pa- 

 rotid glands distinct. Body thick and broad, with small glandular tubercles dispersed over 

 the surface, particularly at the anterior part. Lumbar glands extremely large, elliptic-ovate, 

 flat. Legs of moderate length, rather robust. Anterior toes separated, excepting at the base ; 

 a small tubercle under each joint, and several very small ones on the palm; hinder toes united 

 to about half their length, and bordered on each side to the extremity ; metatarsal tubercles 

 prominent ; soles of the hinder feet with many minute tubercles. 



Colour. — The upper surface of this species is of a brownish grey colour, sometimes greenish 

 brown or dark olive, and with numerous irregular spots of dark-brown or black. Thighs and 

 legs with fasciae of the same colour. Beneath yellowish white ; in some with numerous blackish 

 dots under the throat. 



DIMENSIONS. 



In. Lin. 



Length of the head and body 1 8 



of the anterior extremities 1 



of the posterior extremities 2 3 



Found by Mr. Darwin at Port Desire, in Patagonia, and high up the river 

 Santa Cruz — " probably," says Mr. Darwin, " the most southern limit for this 

 family." 



Genus— LEIUPERUS. Bibr. 



Leiuperus salarius. Mihi. 



Plate XVIII.— Fig. 1. 



Supra nigricans, lumbis maculis 3 vel 4 nigris, albo-marginatis. 



Description. — The head is short, the opening of the mouth small, the tongue rather thick, very 

 slightly emarginate behind, and with the posterior margin free. The eyes small ; the tym- 



