HLCCULATIUX. -^Dl 



Of the eleven Ik'itish s])eeies, the first ten are so closely allied, 

 and the gradation of species so imperceptible, that they do not 

 admit of a tabular arrangement ; the eleventh, cridatella, is dis- 

 tinguished by its unicolorous anterior wings. (Another unicolor- 

 ous species occurs on the continent.) 



1. aurimaculella, Sta. Cat. p. 28 (18t9). Alls auticis dilute 

 griseo-d'neis, niaculis duabus costal, duabus dorsi {prima basini versus 

 per plicam j^rodnctti) albido-litleis ; capillis saturate purpureis. Exp. al. 

 4 1in. 



Head deep purple. Face bronzy. Antenna? fuscous ; basal joiut 

 Avhitish-yellow. Anterior wings pale greyish-bronze, with two yellowish- 

 white spots on the costa and two on the inner margin ; tlie tirst costal 

 spot is placed a little before, the second a little beyond the middle of 

 the wing; the dorsal spots are anterior to the costal spots, and the first 

 one does not touch the inner margin, and is continued along the fold to- 

 wards the base of the wing ; none of these spots are sharj)ly margined ; 

 cilia greyish. Posterior wings grey, with paler cilia. 



Not common ; occurs on the downs beyond Croydon, and near 

 Bristol, appearing in May and August. It has been thought to 

 frequent Varices. 



2. cidarella (Tischer), Zcll. Isis, 3 839, p. 216 ; Sta. Alis anticis 

 pnrpurascente-brunneis, maculis duabus costa?, duabus dorsi albidis, 

 suboppositis ; Ci\\n\\\iferrugineis. Exp. al. 4 lin. 



Head ferruginous. Face yellowish. Antennre fuscous ; basal joint 

 yellowish. Anterior wings purplish-brown, with two whitish spots on 

 the costa, and two on the inner margin; the first costal spot is a little 

 before the middle, the second is half-way between that and the apex ; the 

 dorsal spots are nearer the base of the wing than the costal spots ; cilia 

 brownish. Posterior wings grey, with paler cilia. 



Appears in June, but hitherto rarely met with; it appears to 

 frequent alders. 



3. UlmeUa (Mann), Zell. L. E. iii. 288 (181-8); ^i^.—Sircomella, 

 Sta. — cucHlipenneUa, var. h. Haw. — erythrodactyla, W. V. ? Alis an- 

 ticis ochreis, maculis quatuor costjc obli(|uis fuscis, secunda abbreviata, 

 maculis duabus dorsi fuscis, priore obsoleta, secunda media ovata dis- 

 tinctiore ; capillis /w/yw. Exp. al. Z\ lin. 



WdiiiX fulvous. Face pale yellowish. Antenna; fuscous ; basal joint 

 pale yellowish. Anterior wings yellowish-ochreous, with four fuscous 

 spots on the costa obliquely placed, and two on the inner margin ; the 

 tirst costal spot begins at the base of the wing and terminates in the 

 fold, the second is very small, reaching oidy a very little way from the 

 costa, the third is broad and distinct, extending sometimes to tlie anal 

 angle, the fourth is in the apex of the wing; between the two last is a 

 small black spot on the disc ; the first dorsal spot is near the base of 

 the wing and is rather indistinct, the second lies beyond the middle, is 



