1885.] MR. p. L. SCLATER ON A NEW TANAGER. 849 



Finally, as to the systematic position of Heterocephalus. It has 

 been placed by Riippell, Brandt, Alston, and others close to Rhizomys 

 among the Spalacinse ; but ray examination of these two specimens 

 proves unquestionably that it is a member of the other half of the 

 family, namely the Bathyerginx, and that it is really very closely 

 allied to Georychus, of which it may, in fact, be considered a sort of 

 degraded representative, specialized for an entirely subterranean life. 

 For such a life its hairless mole-shaped body, nearly suppressed 

 eyes, and bristle-clad feet admirably adapt it, while, on the other 

 hand, its deficiency both of protective covering and power of sight 

 would be fatal to it were it to venture above ground, where it would 

 be exposed to the fierce rays of an African sun, and to the attacks 

 of the host of enemies which by its underground life it is enabled to 

 escape. These deductions from the structural characters of Hetero- 

 cephalus are fully borne out by the interesting notes on its habits 

 contributed to the Society by Mr. Lort Phillips (supra, p. 611). 



EXPLANATION OF PLATE LIV. 



Fig. 1. Heterocephalus phillipsi ; female, natural size. 



2. Palate-ridges. 



3. Fore and hind feet, showing sole-pads and fringing bristles. Twice 



natural size. 



4. Skull. Twice natural size. 



5. Skull of H. glaber. Twice natural size. 



3. Characters o£ an apparently new Species of Tanager of 

 the Genus Calliste. By P. L. Sclater, M.A.j Ph.D., 

 F.R.S., Secretary to the Society. 



[Eeceived October 4, 1885.] 



In the series of skins acquired by the British Museum from the 

 Gould Collection is a single specimen of what, after careful exami- 

 nation, I cannot avoid referring to a new species of Calliste. This I 

 propose to dedicate to the great ornithologist to whom the type 

 formerly belonged, as 



Calliste gouldi, sp. nov. 



Supra lucide viridis, interscapulio nigro variegato ; fronte et loris 

 nigris ; pileo antico et regione oculari nitide cceruleis ; alis 

 caiidaque nigris lucido viridi marginatis ; tectricibus alarum 

 minoribus aurescente tinctis : subtus dare viridis, in veniris 

 lateribus ccerulescente lav at a ; mento nigro; macula magna 

 gulam mediam occupante carulescenti-nigra ; ventre imo medio 

 et crisso pallide fulvis ; subalaribus albis ; rostra nigro ; 

 pedibus pallide b runnels. Long, tola 4*8, alee 2'7, caudce 2'0. 



Hab. Brasilia Ivlerid. Or. 



Obs. Species G. thoracicce affinis, et colore corporis superioris fere 



