228 HAUSTELLATA. LEPIDOPTERA. 



depressed imbricated scales : eyes moderate, globose : thorax ovate, not 

 crested; wings entire, deflexed during repose; anterior long and slender, 

 with short cilia, the disc dark, with yellow spots or fasciae ; posterior small, 

 with ample cilia : body slender, and with a tuft at the apex in the males ; 

 longer and obtusely-conical in the females. 



The singular structure of the antennae of the insects in this genus 

 sufficiently indicates their distinction from any others of the family, 

 the base being ajiparently very thick, arising from the scales and 

 pubescence with which that part is clothed, and the apex slender ; in 

 addition both species have a pale ring nearly at the tip, occupying five 

 or six articulations. 



Sp. 1. Oliviella. Alis anticis atro-aureis macula triangulari baseos fasciCtque 

 paulo ante medium flavis. (Exp. Alar. 6 — S lin.) 



Ti. Oliviella. Fahricius.—Da. Oliviella. Steph. Catal. ii. 199. No. 7242. 



Anterior wings deep black, with a golden gloss, arising from minute golden 

 atoms scattered throughout, especially towards the apex; at the base 

 within is a conspicuous, well-defined, triangular yellow spot, and a little 

 before the middle is a straight transverse fascia of a similar hue, not touching 

 the costa, and expanded on the inner margin ; behind both the spot and 

 fascia is an obsolete silvery streak : posterior wings dark purple : head 

 black, with a silvery hue ; palpi yellow : thorax black, with a yellow streak 

 on the tippets : antennae black, with a broad white ring towards the apex. 



Slightly variable, the brownish spot and central fascia on the anterior wings 

 being more or less extensive. 



Common on palings and in hedges in June and July within the 

 metropolitan district, especially near Hertford. 



Sp. 2. sulphurella. Alis anticis fusco-aureis, strig-is duabus, plus minus distinctis, 

 baseos, Tnaculaque margine interiore postica sulphureis : posticisjlavis apice 

 Jusco. (Exp. Alar. 6§ — 8 lin.) 



Ti. sulphurellq. Fabricius. — Da. sulphurella. Steph. Catal. ii. 299. No. 7243. 

 (Ec. sulphurella. Curtis, v. ix. pi. 408. 



Anterior wings brown, sprinkled with minute golden atoms ; near the outer 

 edge of the costa is a faint longitudinal yellow streak, and another less 

 distinct towards the inner edge ; near the posterior angle is a triangular 

 yellow spot; cilia black: the female has the two longitudinal streaks more 

 extended, the inner one reaching to the middle of the wing, and on the costa 

 towards the apex, opposite to the spot on the inner edge, is another yellow- 

 ish spot : posterior wings in both sexes pale yellow, with the apex dusky : 

 head and thorax coppery-black, the latter with a faint yellow stripe on the 

 tippets : palpi and sides of the head yellowish : antennae blue-black, with a 

 white ring towards the apex. 



