126 [June, 



sikerj white streaks, one along the fohl reaehing to one-third, one along the outer 

 half of the cell, the cosia verj narrowly white throughout ; costal cilia white, apical 

 cilia with a short black streak running through them, beneath which they are 

 silvery white, changing to brownish grey along the uorsuni. ]£xp. al. 7^8 tiitn. 

 JUiidwings very pale brownish grey ; cilia still ])aler. Abdomen silvery, with a 

 greyish tinge. Lpijs white. 



Ti,pe, S (9G528) ; ? (9G9G8). Mus. Wlsiii. 



Hah.: ALGERIA— Biskrn, 14-26.111.1903 (TT/sw^.) ; 27-;3L.ni. 

 1895 {Eaton); II:imin;im-cs-Siilaliin, 3-23.IV.1901 {Wlsm.). Six- 

 teen s[)ec'iiiieiJ.s. 



This pretty little speeies, which i.s perh:i[)s most nearly allied to 

 albicosta, Dp., though quite distinct, seems to he somewhat widely 

 distrihuted, hut occurs only in patches. It evidently takes shelter in 

 various plants^ hut 1 have found it only hy smoking the almost hare 

 ground near the diy Oueds. 



3715 : 1. — COLEOPHORA EUl'RETA, sp. n. 

 Antennae white; with a short aborted basal tuft. I'u/pi, Head and Thorax 

 white. Forcwlngs pale bronzy brown, a narrow silvery white streak running along 

 the costa anil including the costal cilia to the apex ; a rather broader silvery white 

 streak from the base, following the upper edge of llie fold and running through the 

 cilia below the apex, but not actually touching the dorsum, slightly attenuated from 

 near the end of the fold outward ; a shorter white streak from the base follows the 

 dorsum to nearly half the wing-length ; cilia very pale brownish ochreous. Exp. 

 a/. 13 — 14 mm. }Iindwiii(js rosy grey ; cilia very pale brownish ochreous. Abdo- 

 men yellowish. Lei/s white. 



%'f', S (9G52G). Mus. Wlsm. 



Hab. : ALGERIA-Riskra, 21.11I-11.IV.1903. Four speci- 

 mens. 



A slender, distinctly marked specieis in whi(di the silver streaks 

 are clearly defined hy the gradually widening l);i,n(l of the ])ale 

 brownish ground-colour, which becomes slightly attenuated to the 

 apex on th(> outer fourth of the wing, the lower band of tlie same 

 colour gradually narrowing to the dorsuui from near the base. 



It is allied to Jielianfhcincl/a, Mill. (3G89), and hiUnccUa, U -S. 

 (3715), but the median silvery strenk is uniformly wider than in my 

 S[)ecimens of those species, and the dark ground-colour is very deci- 

 dedly paler than in either of them. It is of the size of heJianthc- 

 mella, therefoi'e somewhat larger than hilineella, but I am not aware 

 that these species have ever been critically compared. I have bred 

 the former from Cistus monspeliensis, and Milliere recorded it from 

 Helianthemiim tuhiTaria, neither of wln'ch plants occur at Biskra. 



