1380 .] 
109 
The stereotyped description of these antennse is : “ whitish, an- 
nulated with fuscous but the peculiarity is, that these fuscous 
annulations are occasionally confluent, and form fuscous patches, one 
of these is about the middle of the antennae, and there are three more 
towards the tip. A similar character may be noticed in the antennae 
of P. annulatella , and a modification of it in the antennae of P. por- 
rectella , for in this species there is no fuscous blotch in the middle of 
the antennae, but only the three towards the tip. 
Now, the peculiarity of the antennae of these Spitzbergen speci- 
mens, for which Professor Zeller has proposed the name of PJutella 
polaris , is that the antennae are entirely pale fuscous, with only faintly 
paler annulations, and this character appears perfectly constant in all 
the seven specimens I have before me, not a vestige of the dark 
patches in the antennae is to be seen. 
Professor Zeller’s remarks, dated May 29tli, 1874, are as follows : 
— “ The two you send me as PJutella cruciferarum appear to me very 
“ remarkable. They are of the size of the largest P. cruciferarum ; 
“ their antennae are pale brown, paler annulated, very different in 
“ appearance from those of any true P. cruciferarum. Head and 
“ thorax (except the shoulders) pale griseous. 
“ The anterior-wings have the dorsal vitta pale griseous, obsoletely 
“dentate interiorly, and rudely marked with black dorsal spots, and 
“ the cilia unicolorous pale griseous. The posterior- wings are broader 
“ towards the end than in P. cruciferarum , and, consequently, more 
“ suddenly pointed. If your other specimens agree in these parti- 
“ culars with the two now before me, they must certainly be a good 
“ new species, for which I should propose the name of Plutella polaris, 
“ with the following diagnosis : — 
“ Antennis fuscescentibus obsolete dilutius annul atis , capite thoracisque 
“ medio fuscescenti-g risers ; alls ant. cinereo-fuscis, vitta 'dorsali ochraceo-grisea 
“ ante medium obsolete sinuata, in margine grosse nigro-punctata, ciliis uni- 
“ color ibus ochraceo-griseis ; alls post, breviter acuminatis.” 
I would add that the anterior-wings seem to me decidedly broader 
than in the normal P. cruciferarum. All the seven specimens show 
distinctly the dorsal spots noticed by Zeller. 
The Rev. A. E. Eaton captured these specimens July 21st and 
24th, 1873, at Wide Bay, Spitzbergen. 
Mountsfield, Lewisham : 
September 12th, 1880. 
