220 BRITISH LEPIDOPTERA. 



cording to Stain ton), which also has a greenish larva, appears very late, 

 forms at first a slender mine, with a thick frass-line, but is soon 

 changed to a somewhat long blotch, in which the excrement lies about 

 in a rather scattered and irregular manner (Nolcken). 



LAEVA. The larva is green, and may be found in oak-leaves 

 in July, and again in September and October (Heinemann). 



COCOON* The cocoons average 2'1 mm. long, and 1/75 mm. wide. 

 They are of a bright reddish-brown (almost orange-brown) colour, 

 almost oval in outline, one end being rather narrowed. There is a 

 distinct outer rim projecting all round the edge, whilst the central 

 portion is considerably raised. The cocoon proper forms a closely 

 woven structure, with a moderately smooth surface ; investing this 

 there is a very slight loose web of white flossy silk. The superficial 

 resemblance (except for its smoothness) to a peach-stone is marked. 

 [Described under a two-thirds lens on June 14th, 1898, from cocoons 

 sent by Dr. Wood.] 



FOOD-PLANTS. Qitercus robur and Q. pedunculata. 



TIME OF APPEARANCE. Bred June 7th-16th, 1879, from mines 

 collected at Madingley and Sandy, in November, 1878, the latter date 

 being late, and many mines untenanted (Warren). The same 

 observer bred many specimens between May 23rd and 29th, 1882. 

 Stainton found larvae abundant on September 26th, 1865, at Wilhelms- 

 bad, and Nolcken, from August until the commencement of October, at 

 Pichtendahl. Sorhagen reports it as double-brooded in Silesia, the 

 imagines appearing in May and late July, from larva? that feed up in 

 October and early July respectively. 



LOCALITIES. BEDS: Sandy (Warren). CAMBRIDGE: Madingley (Warren), 

 Cambridge (Farren). HEREFORD : Tarrington (Wood). KENT : West Wickham 

 Wood (Sang). LINCOLNSHIRE : nr. Alford (Fletcher). SUFFOLK : Tuddenham 

 (Warren). 



DISTRIBUTION. France : Mont Dore (Sand). Germany: northern 

 and western Germany (Wocke), Brunswick, Hanover and Silesia 

 (Heinemann), Wilhelmsbad, nr. Frankfort-on-the-Main (Stainton), 

 Hamburg (Sorhagen), Alt Damm, Friedland, etc. (Hering), Alsace 

 (Peyerimhoff). Russia : Pichtendahl (Nolcken). Switzerland : Zurich 

 (Frey). 



NEPTICULA NYLANDRIELLA, TengstrOlll. 



SYNONYMY. Species: Nylandriella,Tengstr., " Bidrag," etc., p. 152 (1847); 

 H.-Sch., " Sys. Bearb.," v., p. 359 (1855), fig. 927 (1854) ; Frey, " Linn. Ent.." xi., p. 

 445 (1857) ; Hein., " Wien. Monats.," 1862. p. 259 ; Hein. and Sta., " Zool.," 1863, 

 p. 8359 ; Staud. and Wocke, " Cat.," p. 336 (1871) ; Wallengren, " Bihang Vet.-Ak. 

 Hancll.," Hi., p. 80 (1875); "Ent. Tids.," ii., p. 126(1881); Sorhagen. "Die 

 Klein schmett. Brandbg.," p. 344 (1886) ; Griffith, " Ent. Mo. Mag.." xxii., p. 65 

 (1885) ; Warren, " Ibid.," p. 131 (1885) : Meyrick, " Handbook," etc.. 716 (1895). 



ORIGINAL DESCRIPTION. Xepticula nylamiriclla, Zell. (in litt.). 

 Minima tota aeneo-cinerea nitida, capillis lutescentibus. Long, alae 

 ant. vix If mm. Simillima precedent! (concolordla), at duplo minor. 

 Allman vid Helsingfors i borjan af Juni pa Hiigg och Bjork. (Teng- 

 strom, Bidrag till Finland* Fjanl- Fauna, p. 152). 



NOTES ON ORIGINAL DESCRIPTION, ETC. Frey remarks that the figure 

 in H.-Schaffer represents an insect entirely leaden-coloured, with 

 ochreous-yellow head, and asks : " May it not be a much wasted 

 specimen?" Warren, commenting on the above, writes (E.M.M., 

 xxii., p. 132), that the preceding species referred to by Tengstrom is 



