28 
material as exhibited this evening, but also by Guenee’s work; for, as 
the above synonymy shows, he did not even recognize them as co- 
specific, much less as varietally equivalent. 
The other new form may be known as ab. constricta, mihi, n. ab. 
— caesiata var., Barr., Lep. Brit., viii., p. 153, pi. cccxlviii., fig. lc, Id. 
Central fascia extremely narrowed, and more or less broken on the 
inner marginal half of the wing. This is, of course, the phase of 
“ recurrent variation in the Lcirentiidae ” discussed by me on pp. 153-5 
of my paper in the “ Entomologist ” (vol. xxxvii.), and I have followed 
Strand’s lead, as there alluded to (p. 155), by employing the name of 
constricta for it. 
It will be worth while, in view of the additions and corrections 
proposed above, to tabulate the named varieties and aberrations of 
Entephria caesiata, before concluding with some remarks on its geo¬ 
graphical variation in general and on the question of its American 
representatives. 
Entephria caesiata, Schiff. 
1. caesiata, Schiff., Lang, Hb. Blueish-grey, with well-defined dark 
central band enclosing a pale area on costa. 
2. ab. infrequentata, Haw. Inclining to cinereous, with the fuscous 
band as in the type. This may be used, after Guenee, for the some¬ 
what paler forms which are fairly frequent in Britain, though it is 
really almost synonymous with the type form. 
3. ab. annosata, Zett. Central band entire, i.e., not enclosing a 
pale area on the costa. 
4. ab. (var. ?) glaciata (Keferstein M.S.) Germ, —gelata Gn. Darker 
(brown or more fuscous) than the type, generally weakly marked, and 
not brightly glossy. In spite of the variability of the species in Iceland, 
I believe this description applies to a very great majority of the 
specimens from that country, and that it ought to be regarded as “ var.” 
rather than “ab.” 
5. ab. prospicuata, mihi =gelata var. A, Gn.—gelata, Stgr. Ground 
colour whitish, central band dark. 
6. ab. nigricans, mihi = caesiata var. A, Gn. =glaciata, Stgr. More 
or less uniform blackish or deep fuscous, darker and more glossy than 
ab. (var. ?) glaciata Germ. 
7. ab. constricta, mihi. Central fascia much narrowed and more 
or less broken ( vide supra). 
8. var. impallescens, Christ. (Caucasus). Smaller and narrower 
than the type, wings whitish, densely sprinkled with fuscous, wavy 
transverse lines indistinct. 
9. var. norvegica, Strand (Norway). Smaller than the type, wings 
much more uniform in their tone, the prevailing colour grey. 
?10. var. (?) inventaraia, Grote (California). Said to differ in the 
contour of the central fascia; perhaps a distinct species (vide supra). 
In the British Islands, Entephria caesiata is subject to a good deal 
of variation, though all the examples known to me would have to be 
catalogued under Nos. 1, 2, 3, 6 and 7 of the above-enumerated forms, 
unless, perhaps, some of the Shetland specimens are true glaciata. 
Most of the forms could probably be obtained in almost any locality 
where the species occurs at all full} 7 , provided sufficient material were 
collected. Certainly my friend Mr. Arthur Horne, of Aberdeen, got 
