420 R. OSTEN SACKEN 



C. insularis Schin. Novara, 199 is a closely resembling species. 



Hellomyia ferruginea DoL, 2^^ Bijdr. 26, is probably the same 

 as ferruginea, although some points of the description do not 

 agree. 



ChrysopiSa vacillans Wk. J. Proc. Linn. Soc. Ill, 89! (Aru 



Isl.^')- 

 One 9; Aru Islands, Wokan, 1873 (Beccari). 



The description is bad, nevertheless the identification proba- 

 ble. The type in the Br. Mus. is in poor condition, but seems 

 to be the same species. 



Two (/■ (Dorei Hum, N. Guinea, Febr. 1875, Beccari) are 

 larger; the occiput is silvery white (Chr. vacillans has on the 

 occiput two silvery-white spots, on velvet-black ground, imme- 

 diately behind the vertex ; the lower portion of the occiput alone 

 is white, which color extends upwards along the posterior orbit 

 of the eye) ; the abdomen in reddish, except a brown crossband 

 on the second segment and a brown tip; the second posterior 

 cell is expanded (encroaching upon the first) and in the expan- 

 sion there is an oblong hyaline .spot, which is beautifully opa- 

 lescent, as well as the other hyaline parts of the wing. It is 

 not impossilile that this is simply the other sex of vacillans; 

 in the Br. Mus. I did not find any specimen which resembled 

 these males. 



Tlie shortness of the 3*^ posterior cell , in comparison to the 

 second and the opalescence of the hyaline portions of the wing, 

 are the most striking characters of the above mentioned c/" and 

 V specimens, whether they belong to the same species or not. 

 Walker describes two other species C. guttipennnis and sty lata, 

 of the same group. If they are really different, it will be inte- 

 resting to ascertain whether the above described expansion of 

 the second posterior cell is a sexual or a specific character ? I 

 have not examined these species in detail. 



Chrysoplla lupina n. sp. 9. Body yellowish-tawny, head black ; 

 wmgs with an interrupted brown crossband, which is connected 



