NOTES ON COLLECTING. 107 



11, — The imagines of Ciiiiuddjiliora /-/J^'^.s are best found about April 

 loth upon the trunks of oak, generally from one to four feet up the tree ; 

 they aredifticult to see being of the same colour as the bark (j\Iawson). 



12. — About the last week in IMarch the larvje, pupic and imagines of 

 Sulcnobia incniisjH'ciiclla occur abundantly on palings and old elm trunks 

 on Clapham Common (Coverdale) and elscAvhere. 



13. — -In April the thistle stems should be worked for the pupa* of 

 Kphipiiiphora pfiidiiana. 



14. — In April the roots of mugwort should be collected for P^ji/tippi- 

 phora foeneana, and those of yarroW for Dicroyliaiiipha pcticciella. 



15. — In April the larvie of Psi/r/miilcs rcrlinclla are to be found under 

 fronds of ferns in lanes near Alkham; also the larvte of Stiijinonuta 

 h' plant liana in stems of wild cabbage, and the larviB of J)oii(ilasia 

 onvrofitowella in dried stems of Kchiniii at St. Margaret's Bay (Elisha). 



16. — In April the plants of Stcllaria holostca give plenty of almost 

 full-fed larvH' of Ciiboplutra sdlitaiirUa (Machin). 



17.^ — If the birch bushes were systematically woi'ked in April many 

 rare species of the sun-loving genus Kriorrania would doubtless be 

 found to have a more general distribution than is at present supposed. 

 They Hy gently above the bushes in the sun and are very easily 

 captured. 



18. — Adela ciiprdla usually appears about the end of April flying 

 vigorously round the sallow catkins during sunshine. 



19. — At the end of March the stems of Lnzida canijicstris bearing 

 brown leaves should be pulled up for larva:' of (ilyphiptcn/.v fusron'ri- 

 dclla. 



20. — Plum blossom should be worked (as well as sallows) for the 

 early emerging moths at dusk in April. 



21. — I find that, as a rule, evenings following fine or showery days 

 with a west or south wind, and some sort of moisture on the grass, 

 either rain or dew, and no, or at least a very young, moon, are good for 

 moths if the wind be not too strong; whereas a dry night, or when the 

 Avind is north or east is usually bad (Key worth). 



22. — To rear larvfe iise wide-mouthed glass bottles (such as those 

 in which the anchovies of the Compagnie de la Mediterranee are sold) 

 about 6^in. high, and 3^in. diameter ; at the bottom place baked 

 sand — damp enough for larviT" but not so as to cause mould ; on this 

 spread baked moss and plant the food in the damp sand ; lids should be 

 constructed of wire rings (ordinary fencing-wire) covered with muslin, 

 itc, and made so as to lit easily over the mouth of the jar (Wilson). 



N.B. — Some hundreds of similar hints have been published in 

 the preceding volumes. 



I^OTES ON COLLECTING, Etc. 



Lepidoptkra in thk FPtENSHAjr DisTiucT. — Oil the whole, 1900 proved 

 to be a late and bad season, scarcely anything at sugar, and light a 

 failure ; in the case of KitcJicUa jacohaeac, this was most surprising, 

 for though the insect was very common, not a single individual came 

 through my " moth trap " windows, whereas last year they were a per- 

 fect pest. The same applies to Spilosinna iiwntJiastri, the latter, however, 

 I think was scarce, as I could not detect imagines outside. 1 fancy the 

 periodical failure of this species, as with many others, is due entirely 



