Col. C. Swiniioe on Eastern Thterocera. 495 



lower molar with only four simple spaces, one in front of the 

 others, the anterior representing- the front triangle, the second 

 the normal second and third, and the third tiie normal fourth 

 and fifth triangles, here opposite and coalesced with each 

 other. Outer and inner re-entrant anodes about equally deep, 

 as they are in tlic second m dar, which has the usual Evotoniys 

 pattern. Last molar with its outer re-entrants much deeper 

 than usual, nearly as deep as the inner ones. 



Dimensions of the type (measured in the flesh by Mr. 

 Gordon Smith) : — 



Head and body 79 mm. ; tail 54 ; hind foot 17"5 ; ear 10. 



Skull : greatest length 24*3 ; basilar length 20*7 ; zygo- 

 matic breadth 14*6 ; nasals 7'2 X 3'3 ; interorbital breadth 3"9 ; 

 breadth of brain-case 10'3 ; height of brain-case from 

 basion 6*5 ; palate length 11 ; diastema 6'8 ; palatal fora- 

 mina 4*2 X 1'4 ; antero-posterior length of bulla3 5 ; length 

 of upper molar series (crowns) 5, of »i' I'G. 



Hah. Kobe, Hondo. Alt. 650 m. 



Type. Male. B.M. no. 5. 3. 3. 49. Collected 24th Feb- 

 ruary, 1904. One specimen only. 



" Under pine-trees, in bamboo-grass." — R. O. 8. 



This vole, representing a new subgenus, forms a most 

 interesting addition to the known fauna of Japan, and I have 

 much pleasure in connecting its donor^s name with it. 



LXIV. — Notes on Eastern Heterocer a, with Descriptions of new 

 Genera and Species. By Colonel Charles Swinhoe, M. A., 

 F.L.S., &c. 



Family Syntomidse. 

 Euchromia plagosa, nov. 



2 . Frons white, tegulai orange ; patagia and band at base 

 of abdomen greyish yellow, next segment black, the third 

 metallic blue with a white spot in the middle, the next 

 two orange, intersected by a black line, the last two black 

 Avith blue bands in them : fore wings with some metallic- 

 blue marks at the base, both wings with similar marks at the 

 ends of the cells; spots white, a short longitudinal mark 

 below the cell near the base, two spots in and below middle 

 of cell (the latter the larger), two between veins 3 and 5, and 

 one below vein 6 : hind wings with a short subcostal white 



