277 



There is no allied species in Japan and Formosa, and this 

 species is somewhat similar to Tabanus puteus, Ricardo, from Ceylon 

 but quite different. 



Described from only one but quite perfect female from Mansuvv 

 (Koshum in South Formosa), collected by Mr. K. Miyake, on the first 

 of May, 1918. 



15. Tabanus okinawanus, Shir. (n. sp.) (PI. fig. 3 ; 

 PL XI, figs. 3 & 4). 



(Okinawa-0-Abu). 



Rather large brownish species with a long frontal callus on the 

 narrow brownish yellow frontal stripe, with the very small dorsal 

 hump of the narrow reddish yellow antennae, with three very fine but 

 rather well-defined brownish yellow-grey median stripes and a pair of 

 rather indistinct though broad greyish lateral stripes on the yellowish 

 brown thorax, with a narrow interrupted black median stripe and very 

 small yellowish grey haired median spots on the reddish brown dorsal 

 abdomen, with the blackish legs, and with the infuscate wings. 



Female. Head slightly broader than the thorax, moderately 

 arched behind. Frontal stripe brownish yellow, very narrow, gradually 

 contracting from the vertex to the lower end and about eight and a 

 half times as long as its narrowest part or wholly six times as long as 

 its broadest part, furnished with numerous very short rather erect 

 black pubescence which becomes conspicuously dense on the vertex 

 and behind that there is no special outstanding or over-lapping long 

 fringe ; frontal callus not touching the eye-margins, oblong with the 

 lower end roundish and with a long fine linear upper extension which 

 is more than twice the length of the callus proper. Frontal triangle 

 slightly elevated below, dusted with orange yellow, on the upper margin 

 there are two very small blackish spots at the sides, the median sulcus 



