igii.] G. RiCARDO : The Oriental Tabanidae. 379 



the posterior cross-vein and the apical portion of the postical 

 vein. A female specimen from Anioy, China (Buddingh). V. d, 

 Wulp, Notes Leyden Museum, vii, p. 79. 



In Brit. Mus. coll a male and female from Tygosan, Chusan 

 Archipelago, 1892 (Walker) : and a series from Japan, 1909 

 (Dr. Myajima). 



A well-marked species easily distinguished by the four narrow 

 black stripes on the yellow abdomen and by the cross-band of 

 imng not reaching beyond the fifth longitudinal vein, the posterior 

 cross-vein and apical portion of the sixth longitudinal vein being 

 shaded with brown only, the centre of the discal cell is hyaline. 

 The face is covered with yellowish tomentum, the sides with shin- 

 ing testaceous tubercles, and the centre of face over the oral 

 opening is the same colour ; a transverse black shining spot is 

 present on the lower part of each cheek, not attaining the oral 

 opening. Forehead with greyish tomentum , darker at vertex, the 

 frontal callus convex, black and shining, not reaching the eyes. 

 Under side of abdomen often with medium black markings besides 

 being darker at the apex. Length of specimens 8-10 mm. 



Among the types kindly lent me by ]\Ir Verrall there is one 

 (? female) specimen with the head wanting, labelled as above and 

 from the Caucasus, but the specific name is crossed out and 

 " iranensis " scribbled underneath ; there is another female speci- 

 men only labelled " N. Persia." Bigot described one female as 

 C. mlokosicu'iczi, from N. Persia or Caucasus, and later two 

 females from N. Persia as C. iranensis ; apparently he concluded 

 finally that all were one species, which certainly seems likel}^ 

 judging from the descriptions : in this case the name mlokosiewiczi 

 would have priority ; it seems nearly related, if not identical, 

 with a species described by Wulp from Amoy, China, and named by 

 him C. striatus. On comparison of the two specimens of his species 

 in the British Museum collection with the Bigot specimens, the 

 only difference to be seen is the colour of the tubercle above the 

 antennae, which is nearly wholly' reddish in the specimen from 

 N. Persia, not shining black, as Wulp describes; they are exactly 

 similar in the wing ; the headless specimen has the colouring of 

 the abdomen more greyish than ochraceous, as in C striatus. 

 Considering the distance between the localities, it is perhaps pre- 

 ferable to keep the species apart for the present, placing, however, 

 the B'got species among those of the Oriental Kegion. Ricardo, 

 Ann. Mag. Nat. Hist. (7), ix, p. 378 (1902). 



There can now be little doubt that the two Bigot species are 

 the same as Wulp's species '' striattis,''' as in the series lately 

 received from Japan there is one female with the tubercle reddish 

 yellow. As the name striatus is preoccupied by a species .so named 

 by Osten Sacken from N. America in 1876, the sj^ecies must 

 henceforth be known as Chrysops n lokosiewiczi, and belongs to 

 ])oth the Palaearctic and Oriental Regions, ranging apjiarently 

 from cast to west of the Continent. 



