298 Mr. W. Schaus on 



mixed black and ochraceous buff, becoming paler towards 

 the shoulders. Sides of neck distinctly ochraceous buflF, 

 contrasted both with the colour of the shoulders and that of 

 the throat, the latter being greyish white slightly tinged 

 with huffy. Underside of body huffy white. Limbs and tail 

 except at base brownish black. 



Skull. In size similar to that of A. fusca, Miller, from 

 Kundur and Bintang, but with much narrower brain-case 

 and zygoma, as well as broader rostrum. 



Dimensions of flat skin (original no. 88 ; paratype) : — 



Head and body 590 mm, ; tail 485. 



Skull (of type) : basilar length 91 ; condylo-basilar 

 length 96 ; greatest breadth 52*1; mastoid breadth 36*5; 

 nasals 21*2 X 9*2 ; intertemporal constriction 13 ; width of 

 brain-case 33'5 ; palatilar length 50 ; palate, greatest breadth 

 (including teeth) 3r8, least breadth (between canines and 

 incisors) 10'4; breadth of rostrum across roots of canines 18*5 ; 

 foramina incisiva 4< ; front of jj^ to back of m^ (alv.) 28*8 ; 

 ^;4, length on outer edge5'7, breadth 5*1, greatest diameter 6'1. 



Type. Old ? (skull). Zoological Museum, Munich. 

 Original no, 4. Collected by Dr. B. Hagen on June 3rd, 

 1905. 



Tijpe locality. Simpang, Banka. 



Specimens examined. 3 skins without skuUs ; 1 skull (old 

 female ; type). 



This Arctogalidia appears to be most nearly related to 

 A. major from Malacca : it may be distinguished by its 

 smaller size and lighter coloration ; the sides of the neck, 

 though in general style very much as in that species, are also 

 a little paler. From A. fusca this new form differs especially 

 in its more huffy colour. A. minor, from Billiton, on account 

 of its much inferior size, needs no special comparison with 

 A. bancana. 



The skull of A. hancana is recognized at once by the com- 

 paratively narrow zygoma. 



XXXII. — New Species o/' Erycinidse /yo»i Costa Rica. 

 By W. Schaus, F.Z.S. 



Mesosemia cacMana^ sp. n. 



^ . Body above fuscous, underneath whitish. Wings 

 bright metallic blue. Fore wings : a round black spot afc 

 end of cell ; a curved tine black postmedial line, not extcn ling 



