I'KACTUAL HINTS. 2H{J 



Restin(; hauit of Libythea celtis. — Tho under side of this l)utter- 

 t\\ is of ii ,L>i'een -brown tint with irrej^ular shades of yellowish. When 

 at rest the forewings are loAvered until the costa is on a level wilh the 

 costa of the hindwings, this agreement extending from the base to the 

 curved projection on the hindwings, which extends above the costa of 

 the forewings. The outer part of the foi-ewings extends Ix'vond the 

 hindwings, and the curve below the angular points of the former tits the 

 curve of the outer margin of the hindwings. The dark antennfc are 

 curved forwards and lowered until the tips just reach the surface on 

 which the insect is resting. The long palpi fill in the hollow between 

 the antenn* and complete the resemblance that they bear to the pedicel 

 of a leaf. The median nervure of the hindwing is dark brown, and 

 conspicuous to the end of the discoidal cell, its branches are also rather 

 dark. The inner margins of the wings jiist touch the surface on which 

 the insect rests. The resemblance of the whole to a dead leaf is most 

 striking and unmistakable. — J. W. Tutt. 



Cross uetween Clostera curtula and C. piura. — Large numbers 

 of l)oth these species were out in the same breeding-cage during the last 

 few days (c/c, July 20th-25th), and 1 find that in thire instances male 

 ' '. jiii/ra have paired with female ('. nirtiila ; the ova are brown in 

 colour as in ('. nirtiilu. Can anyone inform me whether this cross 

 will produce true ( '. ciirtida '? — L. W. Newman, Bexley. [This cross 

 WILL PRODUCE hybrid ]>i<ii'(( X nniida. In the Imcktcn- Horse for July 

 27th, p. 177, Dr. Standfuss notes the following hybrids in this genus : 

 l'i(li-a 3 X ciirtiila ? , curtula S X I'iiira J , nirtnla ^ x aitac/ioreta 

 5 , aiiacltiinia $ X nirtida $ , cJ (lu'i/ra x curtula) x $ {piura x 

 curtula), 3 [curtula x /u'l/ra) X ? (curtula X lu'i/ra), 3 (curtula X 

 anac/inrcta) X 2 anac/uircta, S (aiiac/iorcta x curtula) x 5 curtula, 

 whilst a male of the cross <? (curtula x (oiachorcta) x ? anac/iorcta, 

 was afterwards paired Avith a ? anacJuircta. — Ed.] 



Scent-tuft of Mamestra brassicae. — I have lately examined a 

 specimen of Mauicstra brassicae which seems to have a curious growth 

 on the right side of the thorax. I found it Hying about the house 

 last night. The first thing I noticed was a peculiar odour, Avhich 

 made me look at it, and by gaslight I thought it was mildewed, but 

 on examining it again this morning the structure appears to be some- 

 thing like two abnormal tufts of hair. A large tuft growing from the 

 thorax and a small one from the upper part of the abdomen. — F. W. 

 ])niD, Kosedale, 1G2, Dalhng Road, Hammersmith, \\. Auijust Ith, 

 1899. 



J^3RACTICAL HINTS. 



Field Work for September and October. 



13y J. W. TUTT, I'.K.S. 



1. — The isolated patches of (ialiuiu that grow on tlie shingle, in 

 our coast districts, often harbour large numbers of the larva' of Mai-m- 

 ijliissa stcllataruui in September. 



2. — In September the larvse of ( 'ocJditliau arellana {/iuuicudcs) are 

 to be obtained by beating the oaks in our soutliern woods. 



;-}, — In September Ividiiiuios tiliaria is often very abundant on gas- 

 lamps. It llies at dusk, and nornuilly rests on tlie trees, after dark, in 

 woods, i^c. 



