THE ENTOMOLOGIST S RECORD. 



Mr. Gardner's, or Mr. Mera's. I should arrange the forms thus : — Of 

 ab. palliila, five (two normal, three more reddish) ; ab. rnfescein, three 

 fine and a fourth approaching it ; ab. clarJd, three or four (none very 

 bright) ; ab. cio-tiHii, about ten, the black markings, on the whole, 

 strong) ; ab. nif/rescrjis, five (one or two very extreme, almost reaching 

 ab. nitira). One cripple, and three sacrificed in attempts at pairing, 

 have been included as rurtim, though the precise shade is not quite 

 certain. Both stigmata, as in all our material in this generation, are 

 always distinct. 



Comparison of second generation with the parent brood. — In 

 my summary of brood A {antra, pp. 220-221), I analysed the forms 

 thus : — ab. pallida, Tutt (.s^^^.s. lat.), -IS; ab. t/risea, Tutt [sens, lat.), Bl ; 

 ab. clarki, mihi, 37 ; ab. curthii, 'Hewm, ^nifonii/rescena, Tutt, 37; 

 ab. nyireacenH, Tutt, 19; total, 167. Broods C to G, roughly classified, 

 work out as follows : — ab. pallida, 24 (brood C, 10, broods D-G, 14) ; 

 ab. ip-isea, 14 (brood C, 12, broods D-G, 2) ; ab. (jnaeo-fusca, mihi, u. 

 ab.''-, 1 (brood C) ; ab. rnfeacens, 6 (brood C, 2, brood G, 4); ab. clarki, 

 34 (brood C, 17, broods D-G, 17) ; ab. curtiHii, &c., 48 (brood C, 23, 

 broods D-G, 25) ; ab. ni;irescens, 13 (brood C, 7, broods D-G, 6) ; 

 unclassified, being too worn— apparently cmtini or niyrescens, 5 

 (brood C) ; total, 145. To help the eye, the percentages may be 

 roughly tabulated : — 



Brood A. Broods C-G. 



(Generation 1). (Generation 2). 



ab. ptdlida . . . . . . . . 25-74 per cent. . . 16-55 per cent. 



nh. grisea 18-56 ,, .. 9-65 



aJo. (jrUeo-fuxca .. .. .. — .. -69 ,, 



ah. rtifesceiis .. .. .. .. — .. 4-14 ,, 



44-31 per cent. 



22-15 per cent. 



22-15 



11-37 



55-68 per cent. 



31-03 per cent. 



23-44 per cent. 

 33-10 



8-96 



3-45 



68-96 per cent. 



Total non-melanic . . 



ab. cldrki 



ab. curtidi 



ab. nigrfsceits . . 



unclassed (melanic) 



Total melanic 



Thus the percentage of melanic, or partially melanic, specimens has 

 advanced, although scarcely so much as might have been expected from 

 the selection of melanic parents; and it is observable that there are not 

 quite so many really blackish specimens as m the first, the increase being 

 more in the redder and intermediate ones; yet the discrepancy in this 

 particular is, perhaps, not so great as I have made it appear, for a 

 considerable number of examples of brood C might almost as appro- 

 priately have been placed with niprescens as with ciiriisH, and it would 

 practically vanish if we assume most of Mr. Bacot's worn specimens 

 in brood C to be true niijrescens. On the whole, the second generation 



* Ab. griseo-fusca, n. a.h. = conseqiia, Adkin {pro parte), nee Hb. Darker than 



ab. grisea, Tutt, forewings almost as in Entom., xxii., pi. vi., fig. D2 (ab. nigrescens, 

 Tutt, pro jxtrte), h'mdwings not infuscated. This form appears rerg occasionally 

 in the south of England, and is the darkest, so far as I yet know, which is here 

 obtainable. There is no suggestion of red in its coloration, and I am inclined to 

 agree with Mr. Adkin when he says of a similar, even if slightly more extreme, 

 form, that it is " traceable downwards through varying shades of greys to a very pale 

 grey type," whereas the true cttrtisii series is rather derived " through the reds " 

 from " a light red type " (R. Adkin, in Proc. Sth. Lond. Ent. Soc, 1890-91, p. 157). 



