December, 18S7.1 145 



(ictella, H.) occurs in South Germany and Switzerland, is also probably- 

 like Chaidiodus, double brooded. Heinemaun states that it appears 

 in June on into August, and that the larva feeds on Thesium montanum 

 in May. The imago of ictella is dull leaden-colour, with longitudinal 

 orange streaks ; the fringes without dividing lines. 



Genus 3, u^ohmia, St. — This genus, with that following {Heydenia) 

 are distinguished from the two preceding by the short, drooimig palpi ; 

 the insects comprised therein are single brooded, the larvae feeding in 

 autumn on the seeds of Umbelliferce. 



dentella, Zell., Isis, 1839, 204 ; F. R., 83, 3, p. 245 ; H.-S., v, 259 ; Frey, Tin., 177, 

 Lep., 381 ; Stn., I. B., 177, Man., 2, 365 ; Hein., 408 ; = subdentella, Stn., 

 Cat., 20 ; = atrella, Stph., 111., iv, 354 ; Wd., 1578. 



Fore-wing short, broad, stumpy ; deep brown-black, with a purplish tinge ; 

 tooth of scales at one-third from the base ; the inner margin slightly paler before 

 and beyond it. Fringes concolorous, dusted with darker scales near their base, and 

 with a single dividing line before their apex. Hind-wing dark fuscous. VI. 



Larva glossy, yellowish, with distinct spots, and alternate pale 

 and dark longitudinal lines : head dark brown. On seeds of Chcero- 

 phyllum temulentum. Living at first inside the separate seed-heads, 

 afterwards spinning the seed-heads together with a slight web, in 

 which the larva rests, eating out their contents. Very much like that 

 of. Chauliodus insecurellus. Full fed at the end of July and beginning 

 of August. Pupa on the ground in a slight web. 



The larvae were first found in this country two years ago by 

 Messrs. Fletcher and Digby near Arundel ; last year I found them 

 commonly all round Cambridge, always on the above-named plant ; 

 but it seems pretty certain, from notices kindly forwarded by Mr. 

 Stainton, that on the continent they feed on the seeds of other Um- 

 helUferce. Thus E. Hofrnann mentions Pimpinella saccifraga, as well 

 as Chcerophyllum, while both Sorhagen and Schmid have, it would 

 appear, found them on ^gopodium podagrm'ia. Heinemann says, 

 " Larva on seeds ; larva in August on Angelica sylvestrisy Fischer 

 von Roslcrstamm says that the images were taken by Herr Zeller at 

 Glogau, in cop., on flowers of Chcerophyllum bulbosum, towards sunset 

 in June. 



The imago is very sluggish, but may be beaten from hedge rows 

 into an umbrella, or taken at rest on the flowers of Umhelliferce ; but 

 the caught insect gives but a faint idea of the blackness of bred 

 examples. 



