136 VARIETIES OF 



posticae pallidiores" (< Lepidoptera Britannica,' p. 121). This is a 

 rather common form. I have it from Hereford, Clevedon, Epping&c. 



y. var. pallida, mihi. This name I would apply to all those speci- 

 mens which have a whitish or pale greyish-white ground colour. 

 Among such specimens we find the following sub-varieties. (1). 

 Anterior wings whitish or whitish-grey, with no distinct transverse 

 lines, central shade and stigmata rather indistinct, and no black spots 

 on the inside of the subterminal line = sub-var. immaculata-pallida. 

 (2). Anterior wings whitish or whitish-grey, the transverse lines and 

 stigmata generally rather indistinct, one pair of small black dots on 

 the inside of the centre of the subterminal line = sub-var. bimaculatua- 

 pallida. (3). Anterior wings white or whitish-grey, with the trans- 

 verse lines, central shade and stigmata generally distinct, and two, 

 three, or more pairs of small black spots on the inside of the subterminal 

 line '= sub-var. geminatus-pallida. This latter is the true geminatus of 

 Haworth, who writes : " Bombyx. Alis griseo-cinereis, subnebulosis, 

 strigaque postica e punctis tribus geminatis." " Exemplar solitarium 

 tantum vidi. Duobus prascedentibus valde affinis at minus nebulosus : 

 cilia immaculata : thorax cinereo-griseus : striga postica in alis anticis, 

 ex maculis duabus seu tribus geminatis, una harum ad cost-am sub- 

 simplex " (' Lepidoptera Britannica,' p. 121). 



8. var. grisea, mihi. This differs from var. pallida in being of a 

 darker grey ground colour, and generally much more powdered with 

 dark scales. Among the specimens having this ground colour we 

 find: (1). Specimens with the transverse lines, central shade and 

 stigmata indistinct, and with no black spots on the inside of the sub- 

 terminal line = sub-var. immaculata- grisea. (2). With the transverse 

 lines, central shade and stigmata more or less indistinct, but with one 

 pair of spots on the centre of the subterminal line = sub-var. bimacu- 

 latus-grisea. (3). With the transverse lines, central shade and stigmata 

 more or less distinct, and two, three, or more pairs of small black dots 

 on the inner edge of the subterminal line = sub-var. geminatus-grisea. 



e. var. rufa t mihi. This variety has a deep reddish-brown ground 

 colour, and is thus darker than the more ochreous type and vars. im- 

 maculata and bimaculatus. Like vars. pallida and grisea, this has a 

 sub-var. immaculata-rufa, without black spots on the inside of the 

 subterminal line, sub-var. bimaculatus-rufa with one pair in the centre 

 of this line, and sub-var. geminatus-rufa with two, three, or more pairs 

 of such black dots. 



. var. striata, mihi. The most remarkable development that I 

 have seen in this species, consists of two black longitudinal lines, one run- 

 ning along the sub-costal nervure between the abbreviated and 

 complete basal lines, the other along the median nervure, from the 

 abbreviated basal line (at the origin of the former line), till it joins 

 the dark spot filling up the lower part of the reniform. This speci- 

 men also has a small black quadrate spot between the orbicular and 

 the reniform, the orbicular itself being indistinguishable, beside which, 

 the transverse lines are well marked. It is altogether a very strange 

 specimen. 



Tceniocampa, Gn., instabilis, Fab. (tncerta, Hufn.). 



In looking over a drawer full of this variable species, for which I 

 am chiefly indebted to Dr. Chapman of Hereford, and to a lesser extent 

 to Mr. Finlay of Morpeth, and various Darlington and Nottingham 



