1907.] MICROLEPIDOPTERA OF TENERIFE. 1015 



about the apex ; cilia brownish grey. Abdomen greyish fuscous, 

 richly spi-inkled with iridescent metallic scales. Legs brownish 

 grey, the tarsi faintly spotted with pale ochreous. 



Tiype 6 (99176); $ (99177) Mus. Wlsm. 



Rab. Tenerife : La Laguna, 23. V. 1907. Twenty-four 

 specimens. 



A single specimeia of this species would certainly be regarded 

 as a variety of v-Jiava Hw., but the evidence pointing to the 

 contrary is so strong that it must at least command attention. 

 Should it in future be decided, by someone more fully acquainted 

 with the larval history of both forms, that they are not con- 

 sistently different and separable, the name nesiotes will sink as a 

 varietal synonym. In geneiul appearance the new species is 

 rather more slender and elongate — the forewings longer in pro- 

 portion to their width. In markings it differs in the invariable 

 presence of a connecting bar along the cell, between the two pale 

 transverse fasciae : this arises from the angulate outer edge of 

 the first fascia, and is also more or less traceable on the basal side 

 of the fascia, where it is sometimes quite as conspicuous as 

 beyond it. In v-Jlava, the angle of the 1>- shaped fascia is often 

 produced outward, and is occasionally traceable as far as the 

 second, or outer, fascia, but among all the European and British 

 specimens that I have seen there have been none in which the 

 central pale longitudinal bar is produced inward to the base of 

 the wing. I brought home 28 specimens of v-flava, from various 

 localities in Tenerife, and have 5 received from Mr. Eaton : 

 I have also 5 specimens from Madeira. None of these possess 

 the characters of nesiotes, although many of them were selected 

 from a larger number of captures on account of some tendency to 

 variation : they cannot be separated from European specimens of 

 v-flava. Of nesiotes I have 24 specimens, all taken in one spot, 

 about ten yards square, in brushwood under a clump of fir-trees, 

 north of the road between La Laguna and Tacaronte, about two 

 or three miles from the former. In that spot they were flying 

 in hundreds : I netted twenty at a time, and could easily have 

 taken a thousand, or more, had I wished to do so. A search for 

 larvae proved that they must have been feeding between layers 

 of dead leaves on the ground : there were signs of web and frass, 

 and the moths were dislodged in plenty as the leaves were turned 

 over, but I was somewhat hurried and did not actually find any 

 larvae. The typical v-flava did not occur among them, nor could 

 I find it anywhere near the spot. 



75. (433) OPOGONA Z. 



153. (4277) Opogona panchalcella Stgr. 



Ojjogona panchalcella Stgr. Berl. Ent. Zts. XIY. 325 no. 110 

 (1870) ^ Chr. Hor. Soc. Ent. Ross. XII. 230 (1876)-; Stgr. 

 Hor. Soc. Ent. Ross. XV. 419 (1880)^: Stgr-Rbl. Oat. Lp. Pal. 

 II. 220 no. 4277 (1901) \ 



