1830.] 109 



The stereotyped description of these antennae 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 Plutella 

 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 29th, 1874, are as follows : 

 — " The two g you send me as Plutella 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 annulatis, capite thoracisque 

 " medio fuscescenti-griseis ; alis ant. cinereo-fuseis, vitta dorsali ochraceo-grisea 

 " ante medium obsolete sinuata, in margine grosse nigro-punctata, ciliis uni- 

 " coloribus ochraceo-griseis ; alis post, breviter acuminatis." 



I would add that the anterior-wings seem to me decidedly broader 

 than in the normal P. cruciferarum. AH 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 IZth, 1880. 



