! November, 1 



126 



bark, short lengths of stems, &c. ; it is very slightly curved, and of 

 nearly equal diameter throughout, in shape not unlike the cases made 

 by StenopTiylax. The case from which the insect was bred had the 

 one end closed with a little heap of sand (in nature, vegetable fragments, 

 irregularly drawn together, are made use of) ; the other end was 

 closed with a membranous network. 



McLachlan (Mon. Rev. Tr. Eur. Fauna, Sup., pt. II, p. xxviii) 

 describes the case of A. Thedeni from Lake Ladoga as almost entirely 

 composed of stony fragments. He says, however (l. c, p. xxvi), that 

 A. coenosus is an aberrant species of the genus in which it is at present 

 placed. It is very probable, at the same time, that the materials em- 

 ployed by A. coenosus may vary according to the conditions in which 

 the larva is placed. 



Carluke, N. B. : Octoher 1st, 1884. 



NOTES ON BRITISH TORTRICES. 

 BY CHAS. G. BAEEETT. 

 {Continued from p. 63). 

 In response to my request (cf. Ent. Mo. Mag., xix, 136), speci- 



I; 



mens of the original reputed Scottish JRetinia duplana were kindly 

 sent to me by the Eev. H. Burney and Mr. J. B. Hodgkinson. These 

 were certainly B. turionella, but smaller and darker than those taken 

 in the South of England. Mr. A. H. Jones has now allowed me to 

 examine two of his specimens taken in the middle of June among . 

 young Scotch Fir at Hannoch. These interesting specimens help verj' 

 much to explain the insertion and long maintainance of the name oi 

 Retinia duplana as a British species. They are exceedingly dark ir 

 fore- and AiV2c?-wings, much darker than any English turionella that . 

 have seen, not more than half the size of the latter, and the f ulvou- 

 patch is almost confined to the apical space. Nevertheless, they agrei 

 in form and markings most accurately with turionella, and I have m 

 hesitation in saying that I believe them, and all other supposed Britisl 

 duplana, to be truly turionella. The bright orange colour of the heat 

 and collar is very persistent 



The genuine duplana from Germany is a very glossy mottl 



species, with rather more elongated fore-wings and a grey head anlT 



thorax. ; I , 



Pembroke : Septemher 19th, 1884. ' tof 



