308 BRITISH LEPIDOPTERA. 



a liquid form (a difference which Nolcken considers may have been 

 engendered by a difference in the meteorological conditions at the time 

 the mines were formed). He concludes that his mines and those of 

 Heinemann belonged to the same species. 



Larva. — Length 2 lines. Pale whitish-amber in colour, with a 

 green dorsal vessel ; head very pale brown, with the mouth and two 

 lines receding from it darker (Stainton). Frey describes it as 

 " yellowish-green, with a pale brownish head, and 2^ '" in length." 

 Nolcken says " that it is pale yellow, with a green intestinal canal, 

 and a very pale brown head." Wood notes that it mines with the 

 venter uppermost. 



Cocoon. — The larva leaves the leaf to spin its cocoon, the latter 

 being oval, and blackish in colour (Stainton). Nolcken calls it 

 " blackish-brown." 



Food-plants. — Fragaria vesca and Potentilla fragariastrum (Frey), 

 Tormentilla (/ erecta) (Nolcken). 



Time of appearance. — The species is double-brooded, according to 

 Frey, appearing in May and again in July, from larvse that feed up in 

 August-September and in June respectively. Sang found mines on 

 October Srd-1'l'th, 1863, September 2nd, 1865, and August 10th, 

 1873, at Darlington. Threlfall notes plenty of larvre in wild straw- 

 berry on July 21st, 1876, at Grange, and he also bred imagines in 

 May, 1887, from larva? obtained at Grange, September 30th, 1886. 

 Frey says there is a sparse summer brood of larvae, and a more 

 abundant one in September and October. Nolcken found larva? from 

 September 2nd-October 3rd, at Pichtendahl, where Tormentilla grows 

 plentifully under shady bushes, in colonies varying much in age. He 

 noticed also some mines empty at the commencement of September, 

 which he considers may have been those of a summer brood. 



Localities. — Durham: Darlington (Sang). Hereford: Tarrington (Wood). 

 Kent: West Wickham (Stainton). Lancashire: Manchester (Boyd), Grange 

 (Threlfall). Sussex: Clapham Woods, Worthing (Fletcher). Westmorland: 

 Witherslack (Threlfall). Yorks : Scarborough (Wilkinson), Richmond (Sang). 



Distribution. — Germany : Brunswick, Wolfenbiittel (Heinemann), 

 Silesia (Heinemann and Wocke), Eatisbon (Stainton), Frankfort-on- 

 the-Main (Heyden), Freiburg (Reutti), Alsace, Soultzmatt, Equisheim 

 (Peyerimhoff), Friedland (Hering). Russia: Pichtendahl (Nolcken). 

 Switzerland : Zurich (Frey). 



nepticula angulifasciella, Stainton. 



Synonymy. — Species: Angulifasciella, Sta., " Cat.," p. 29 (1849); "Ins. Brit.," 

 p. 304(1854); "Nat. Hist. Tin.," L, p. 88, pi. i., fig. 3 (1855); "Man.," ii., p. 

 435 (1859) ; H.-Sch., " Sys. Bearb., ' v., p. 350 (1855) ; Frey, "Linn. Ent.," xi., p. 

 417 (1857) ; Hein., " Wien. Ent. Monats.," vi., p. 314 (1862) ; Hein. and Sta," Zool.," 

 xxi., pp. 8380-8381 (1863) ; Staud. and Wocke, " Cat.," p. 338 (1871) ; Hein. and 

 Wocke, " Schmett. Deutsch.," p. 758 (1877) ; Sand, " Cat. Lep. Auv.," pp. 201-202 

 (1879) ; Bang-Haas, " N. H. Tidsk.," xiii., p. 218 (1881) ; Peyer., " Cat. Lep. Als.," 

 2nd Ed., ii.. p. 165 (1882) ; Sorhagen, " Die Kleinschmett. Brandbg.," p. 308 (1886) ; 

 Walsm., "Ent. Mo. Mag.," xxvii., p. 152 (1891); Hering, " Stett. Ent. Zeit.," lii., p. 

 405 (1891) ; Meyrick, " Handbook," etc., p. 722 (1895). 



Original description. — Nepticula angulifasciella, n. sp. ? Argy- 

 ropeza, Z. var. a, 320. Smaller than argentipedella. Anterior wings 

 black, with two nearly opposite trigonal silvery spots a little beyond 

 the middle of the wing, sometimes united and forming an angulated 

 fascia ; head ferruginous (Stainton, Sys. Cat. of the Brit. Tin. and 



