VL iss9."] PROCEEDINGS OF THE NATIONAL MUSEUM. 143 



One specimen, No. 15126, from Port Otway, Patagonia. Dr. L. A. 

 Lee. 



This species is the second of the genus Zachcmus, the typical one 

 being the Z. parvulus Girard from near Rio Janeiro. The Z. roseus is of 

 less robust form than the Z. parvulus, has no dermal folds on the back, 

 and the prefrontal bones are widely separated, and the vomerine teeth 

 are not in arched series. Zachwnus has a simple cartilaginous sternum, 

 and the terminal phalanges are simple. These characters, with the 

 complete frontoparietal bones, place it iu the group Ceratojihrydes, 

 where it forms the approach to the group Hylodes. 



8. Batrachyla leptopus Bell., Zoology of the Voyage of the Beagle, in, p. 43, pi. 



18, fig. 5. Hylodes leptopus Boulenger, Catal., Batr.-Sal. Brit. Mus., 1882, 

 p. 219. No. 15125. 



The genus Batrachyla may be now correctly defined for the first time. 

 It enters the group Hylodes of the family . Cystignathidw. That is, it 

 has the external metatarsals united, the terminal phalange with a 

 transverse terminal branch, and the sternum a simple cartilaginous 

 plate. A frontoparietal foutanelle, vomerine teeth, and Eustachian 

 tube. Toes free. 



This genus in its cranial foutanelle approaches nearer to Malachy- 

 lodes Cope (founded on a Mexican species) than to any other genus of 

 Cystignathidw. It differs from this form in the presence of vomerine 

 teeth. In its membraneous cranial roof it possesses a character of infe- 

 riority, as all the Batrachiau forms of Patagonia do in some respect or 

 other, as compared with their allies elsewhere. 



9. Leptodactylus ocellatus. 

 Buenos Ayres, Nos. 11889-94. 



10. Hydromedusa tectifera Cope. 

 Buenos Ayres, No. 15189. 



IV. Chili. 



11. Paludicola frenata sp. now 



Well developed inguinal glands. No tarsal tubercle ; metatarsal 

 tubercles two, both of conic form, the internal the larger. Toes free, 

 like the fingers without dermal lateral ridge or wing. Heel of ex- 

 tended hind leg reaching to posterior border of orbit. Skin with a few 

 small low tubercles. 



Muzzle obtuse, projecting a little beyond lip-border, narrowed above. 

 Nostril .nearer orbit than lip border. Tympanum hidden. Vomerine 

 teeth iu oblique fascicles between nares. Choame and ostia pharyngea 

 small. Tongue very slightly emarginate. First finger longer than 

 fourth, and much longer than the second, which consists of the meta- 

 carpal only. Third and, fifth toes subequal. Skin without definite 

 folds above or below. Posterior face of femur tubercular. 



