132 [November, 



Then follows a more detailed description in German, the principal 

 points of which are : — 



Head and face paler than in N. viscerella, light ochreous-yellow : the rather 

 conspicuous eye-caps also appear lighter yellow, approaching rather to whitish : 

 base of antennas blackish : palpi whitish. Thorax deep olive-brown, with metallic 

 lustre. Abdomen blackish : legs grey-brown ; hinder tarsi slightly lighter. The 

 fore-wings, which are rather broad, have the same ground-colour as the thorax, and 

 may easily be distinguished from viscerella by their lustre, possessing as they do a 

 much finer scaling. 



Towards the apex they shine with a very bright purple gloss. # * # 



Larva green, reminding one of that of viscerella ; as also does the mine, which 

 is often very serpentine. The cocoon, on the contrary, is nearly round, flattened 

 and smooth, in colovir deep reddish-brown. 



On page 445, there are recorded, under the head of "Addenda," 

 "two insufficiently described and ill-known species," viz., iV5/?«^f/r/eZZ«, 

 Tgstr., and suhnitidella, Z. : that is, species with which Professor Frey 

 w^as personally unacquainted. 



Of Nylandriella, the description hy Tengstrom himself runs as 

 follows: — 



" Nylandriella, Zett. {in litt.). — Minima tota £eneo-cinerea nitida, capillis 

 lutescentihiis. Long. al. ant. vix If millim. Simillima prcecedetiti, at duplo 

 minor." Frey adds : " Near Helsingfors, in June ;" and says, " The figure in H.-S. 

 represents an insect entirely leaden-coloured with ochreous-yellow head. May it 

 not be a much-wasted specimen ?" 



The preceding species in Tengstrom is recorded in a note as 

 concoloreUa, NyL, which is given in Staudinger and Wocke's Catalogue 

 as a distinct species (2956), Bucc. concoloreUa, Tg^tv.^'bwt which there 

 can be little doubt from the description as given by Frey from 

 Tengstrom, is identical with the well-known Bucc. cristatella (2957). 



Now^, the first thing that struck me when I saw Mr. Griffith's 

 Neptlculcr from Sutherlandshire was their great resemblance to small 

 cristatella ; and the figure of Nylandriella in H.-S. represents them 

 admirably. There is not a trace of purple towards the apex, and the 

 insects are certainly not wasted. The only aiicuparice I have seen 

 were six specimens which were sent me by Mr. Threlfall, of Preston : 

 of these five correspond well wdth Prey's description of auciiparicB, 

 and the sixth is manifestly identical wdth Mr. Griffith's insects. Mr. 

 Threlfall tells me that he breeds two forms of the insect, w^hich 

 different forms he has hitherto attributed to difference in sex. I can- 

 not but think that there are two species confounded. It must be 

 remembered that Prey's description was made from a single bred ? . 



Since wanting the above, I have had an opportunity of looking 

 over Mr. Stainton's aucupariw and Nylandriella, and I am glad to say 



