230 CTSTIGNATHID^. 



IV. No lumbar gland ; no tarsal tubercle. 

 A. Skin of the back with large flat warts. 



Interorbital space as broad as the upper 



ej-elid ; toes united at the base by a 



slight web 11. marmoraia, p. 235. 



Interorbital space as broad as the upper 



eyelid ; no trace of membrane between 



the toes 12. verrucosa, p. 236. 



Interorbital space very narrow 13. sarjittifera, p. 236. 



B. Two glandular lines forming an 



X-shaped figure on the back 14. falcipes, p. 236. 



C. Skin smooth, or with a few very small granules on the back. 



Habit slender 15. nitida, p. 237. 



Habit stout 16. mcvicanci, p. 237. 



1. Paludicola bufonia. 



Leiupenis salarius, GiintJi. Cat. p. 22. 



Pleuiodema bufonium, Giinth. I. c. p. 31. 

 rieiirodema bufoniiun, liel/, Zool. JBeac/k, Sept. p. 39, pi. 17. f. .5. 

 Leiupenis salarius, Bell, I. c p. R9, pi." 18. f. 1. 



Lower surface of foot. 



Tongue subcircular, indistinctly nicked behind. Vomerine teeth 

 in two small oblique groups between the choanas. Snout rounded, 

 as long as the orbital diameter ; nostril equally distant from the eye 

 and the tip of the snout ; interorbital space as broad as the upper 

 eyelid ; tympanum indistinct. Fingers short, depressed, first ex- 

 tending slightly beyond second ; toes short, nearly half webbed, the 

 membrane extending as a fringe to their tips ; subarticular tubercles 

 small; two strong, oval, compressed, metatarsal tubercles. The hind 

 limb being carried forwards along the body, the tibio-tarsal articula- 

 tion readies the tympanum. Skin with very small warts above ; a 

 very large lumbar gland, at least as long as the head, depressed, 

 elliptical ; another subcircular gland on the shoulder. Olive above, 

 with small darker spots ; lumbar glands of the coloiir of the back, 

 with large irregular brown spots ; limbs cross-barred ; sometimes a 

 light vertebral stripe. 



Patagonia. 



a,b. 5: . Port Desire. C. Darwin, Esq. [P.]. (Types.) 



c. Yg. Port Desire. C. Darwin, Esq. [P.]. (Type of 



Leiuperus salarius.) 



