On neto Batrachians from the Ancles. 185 



M'Intosh. 1874. Traus. Zool. Soc. vol. ix. part vii. "Ou British 



Annelida." 

 . 1885. ' Challenger ' Reports, Zoology, vol. xii. " Annelida 



PolvchfBta." 

 . 1900. 'Monograph of British Annelida.— Part 11. Polyclifeta.' 



l\av Society. 

 Norm AX." 1890. " Ann, k Mag. Nat. Hist., JNlay 1890. 

 DE Q.UATREFAGKS. ISGo. ' Histoire des Anueles,' vol. i. 

 Saks, G. O. 1873, Nyt Mag. f. Naturv. xix. " Bidrag til Kuusdab 



om Christianiafjordens Fauna. — III. Annelida.'' (From MSS, of 



M. Sars.) 

 St. Joseph. 1888. Anuales des Sciences Naturelles, ser, vii. t. 5. 

 TuEKL. 1879. " Anneiides Polychetes des Mer.s de la Nouvelle- 



Zerable,'' Svenska Vet.-Akad. Ilandl., Band xvi. No. 3. Stockholm, 

 Trautzsch. 1880. Archiv f. Naturg. 55. " Ziir Kenntnis der Poly- 



noiden von Spitzbergen." 

 Tkeadwell. 1903. Bulletin of the U.S. Fish Commission, vol. xxiii. 



part 3. " PulychiBtous Annelids of the Hawaiian Islands." 



EXPI.ANATION OF PLATE VI. 



Firj. 1. Head oi Eunoa fritoni, M'Intosh. Enlarged. 



Fi(j. 2. Tip of dorsal bristle of Evanie impar, Johust., var. Zeiss obj. D, 



oc. 2. 

 Fifi. 3. Mid dorsal bristle of Eueranta villosa, Mgrn. Zeiss obj. D, oc. 2, 

 Fig. 4. Superior ventral bristle of ditto. Zeiss obj. D, oc. 2. 

 Fig. 5. Inferior ventral bristle of ditto. Zeiss obj. F, oc. 2. 



XIX. — Descriptions of neio Batrachians from the Andes 

 of South America., preserved in the British Museum. &y 

 G. A. BOULENGEE, F.R.S. 



(Published by permission of the Trustees of the British Museum.) 



Ht^la melanopleura. 



Tongue ciiculav, entire and slightly free behind. Vomerine 

 teeth in two groups or short transverse series between the 

 rather large choanse. Head moderate, broader than long ; 

 snout short, rounded, as long as the orbit ; canthus rostralis 

 obtuse, loreal region oblique, concave ; nostril equally distant 

 from the eye and from tlie tip of the snout ; interorbital 

 space as broad as the upper eyelid; tympanum distinct, two- 

 thirds the diameter of the eye. Fingers one-fourth webbed, 

 disks smaller tiian the tympanum ; male with a projecting 

 rudiment of poUex ; toes three-fourtlis webbed ; suburticular 

 tubercles moderately prominent; a feeble tarsal fold. The 

 tibio-tarsal articulation reaches between the eye and the tip 



