352 BRITISH LEPIDOPTERA. 



long oval, the others a round oval, two of which measure 2-75 mm. 

 in length and 2-2 mm. in width, whilst the third is 2-1 mm. long 

 and 1-75 mm. wide. The cocoons are lightly covered with loose 

 flossy silk, which is especially abundant about the ill-defined rim. 

 The upper part is regularly domed, but reaches to no great height, the 

 apex of the raised portion being towards the wider end. The empty 

 pupa-case protrudes from the broader end, is transparent and colour- 

 less, with the exception of some irregular grey patches (? scales) on 

 the venter of the thoracic area. [Described, July 13th, 1898, under a 

 two-thirds lens, from cocoons sent by Dr. Wood.] The cocoon is 

 oval, reddish-brown in colour, somewhat flattened and shiny (Frey). 

 Nolcken states that from about 50 cocoons, varying in colour between 

 brownish-yellow and brown, he bred, only one imago, probably because 

 they were kept too wet. 



FOOD-PLANT. Populus tremula. 



TIME OF APPEARANCE. The species is probably single brooded. 

 Fletcher, who added this species to the British list, found mines in 

 September, 1884, from which he bred imagines in June, 1885. Frey 

 found imagines in July and commencement of August, and larvae in 

 September and early October. Nolcken found larva? at Pichtendahl 

 from August 10th until the end of the month. 



LOCALITIES. HEREFORD : Tarrington (Wood). SUSSEX : Abbott's Wood 

 (Fletcher). 



DISTRIBUTION. Austria: nr. Vienna (Metzner). Denmark: Brede 

 (Bang-Haas). Germany : generally distributed (Heinemann and 

 Wocke), Alsace, Saverne (Peyerimhoff), Ratisbon (Herrich-Schaffer). 

 Netherlands : Wassenaar, Gravenhage (Snellen). Russia : Pichten- 

 dahl (Nolcken). Switzerland : nr. Zurich (Frey). 



NEPTICULA SUBBIMACULELLA, HaWOrth. 



SYNONYMY. Species : Subbimaculella, Haw., " Lep. Brit.," p. 583 (1828) : 

 Stphs., " Illus.," iv., p. 267 (1834) ; Wood, " Index," etc., fig. 1355, p. 196 (1839) ; 

 Sta.. " Cat. Tin.." p. 29 (1849) ; "Ins. Brit.," p. 300 (1854); " Nat. Hist. Tin.," i., 

 p. 258. pi. vii., fig. 3 (1855) ; " Man.." ii., p. 433 (1859) ; Frey, "Die Tineen," etc., 

 p. 379 (1856) ; " Linn. Ent.," xi., p. 397 (11357) ; Staud. and Wocke. " Cat.." p. 339 

 (1871) ; Mill., " Cat. Lep. Alp. Mar.," p. 373 (1875) ; Hein. and Wocke, " Schmett. 

 Deutsch.," p. 767 (1877) ; Sand, " Cat. Lep. Auv.,"p. 202(1879) ; Wallgrn., " Ent. 

 Tids.." ii., p. 131 (1881) ; Peyer.. "Cat. Lep. Als.." 2nd Ed., ii., p. 167 (1882); 

 Snellen, " De Vlinders," etc., p. 1002 (1882) ; Curo, "Bull. Soc. Ent. Ital.," xv., 



L09 (1883); Sorhagen, "Die Kleinschmett. Brandbg.,"p. 310 (1886). Cursoriella. 



1., " Linn. Ent.," Hi., p. 326 (1848) ; Sta. and Zell., " Trans. Ent. Soc. Lond.," 



Zell. 



v., p. 135 (1848) ; H.-Sch., " Sys. Bearb.," fig. 844 (1853), p. 356 (1855) ; Mann, 



" Wien. Ent. Monats.," 1857, pp. 173 et seq. 



ORIGINAL DESCRIPTION. Tinea suhbimaculella (The twin-spot Sable). 

 Alis atris maculis duabus marginalibus argenteis. Expansio alarum 

 2 lin. Caput fulvum. Alaa anticae atne, ipsa basi lente albicante ; 

 maculis duabus oblique oppositis fere confluentibus, argenteis ; una 

 medio marginis tenuioris, altera magis antica costali. Posticae nigro- 

 plumbere. Habitat : Imago Septis (Haworth, Lep. Bntannica, p. 583). 



IMAGO. Head orange-yellow. Anterior wings 6 mm. ; black; 

 whitish patch at the base, extending along the inner margin ; 

 triangular whitish spot in middle of costa, a larger spot beyond this on 

 inner margin ; cilia whitish. Posterior wings pale grey, with paler 

 cilia. 



EGG. The egg is laid on the upperside of an oak leaf, close to the 



