NEPTICULA TILIS:. 217 



beschattefcen Stellen " (Die Tineen, etc., p. 376). It mines with the 

 dorsum uppermost. 



COCOON. The cocoons (4) examined average 2 mm. in length and 

 1'75 mm. in width, and are spun on the under surface of the leaves 

 of their food-plant. The cocoon is roughly oval in outline, but with 

 one end (from which the empty pupa-case projects) much wider than 

 the other. The broad end is considerably flattened in some of the 

 examples, less so in others, the domed portion rising up very consider- 

 ably centrally, and forming somewhat of a point at the apex. The 

 cocoon is somewhat roughened and wrinkled, and a number of fine 

 silken ends, of the same pale yellowish colour as the cocoon itself, 

 project from all over its surface. The marginal rim is somewhat 

 crenate, and there are here more loose silken fibres than elsewhere, 

 this being the portion of the cocoon which is directly attached to the 

 outlying ribs, although considerably above the surface of the leaf. 

 The projecting pupa-case is absolutely colourless, transparent, and very 

 delicate, the surface finely pitted, and beautifully iridescent. [De- 

 scribed June 28th, 1898, under a two-thirds lens, from cocoons sent by 

 Mr. W. H. B. Fletcher.] Wood notes the cocoon as pale ochreous- 

 yellow in colour. Ten cocoons sent by this observer averaged 2-2 mm. 

 in length, and 1-6 mm. in width, and showed considerable minor 

 variation in shape, although they were more distinctly equal at the 

 ends than the cocoons previously described. They are of a bright 

 yellow-ochreous colour, somewhat brighter in hue than those sent by 

 Fletcher, a number of rather darker reticulations extending over the 

 surface of the well-developed dome. Frey describes the cocoon as " stark 

 abgeflacht, unregelmassig langlich rund, von hellem Colorit, hellgelb 

 oder ockerfarben." 



FOOD-PLANT. Tilia ymndiflora (Frey), but Tilia parvifolia is pro- 

 bably its food-plant in Britain. 



TIME OF APPEARANCE. The species appears to be single-brooded, 

 the imagines appearing in May and June from larvae collected the 

 previous September-October. Vaughan found mines near Bristol, 

 September 14th, 1859. Frey bred imagines in March in his room, 

 from mines found the previous September. 



LOCALITIES. GLOUCESTERSHIRE : Bristol, Leigh Woods (Vaughan). HEBE- 

 FORD: Dowards, Woolhope (Wood). LANCASHIRE: Grange, Preston, between 

 Ashton and Stoneyhurst (Hodgkinson). WESTMORLAND: Arnside (Hodgkinson). 



DISTRIBUTION. France : Nohaut, Indre (Sand). Germany : gene- 

 rally distributed (Heinemann and Wocke), Ratisbon (Stainton), 

 Frankfort-on-the-Main (Frey), Friedland, Stettin (Sorhagen), Fai- 

 sanderie, nr. Saverne in Alsace (Peyerimhoff). ? Russia : Pichtendahl 

 (Nolcken). Switzerland : Zurich (Frey). 



NEPTICULA BASIGUTTELLA, Heinemann. 



SYNONYMY. Species : Ba$ignttella,Hein., " Wien. Monats.." 1862, p. 258 ; Hein. 

 and Sta., " Zool.," 1863, p. 8358 ; Staud. and Wocke, " Cat.," etc., p. 335 (1871) ; . 

 Nolcken, " Lep. Fn. Est.," p. 756 (1871) ; Hein. and Wocke," Schmett. Deutsch.," 

 p. 732 (1877) ; Sand, " Cat. Lep. Auv.," p. 206 (1879) ; Peyer., " Cat. Lep. Als.," ii.. 

 2nd Ed., p. 164 (1882).; Sorhagen, "Die Kleinschmett. Brandenburg," p. 344 

 (1886) ; Meyr.. " Handbook," etc., p. 715 (1895). 



ORIGINAL DESCRIPTION. 6. N. basimittclla. Capillis atris, pencillis 

 et antennarum conchula albidis, thorace atro ; alis anterioribus sub- 

 nitidis, violaceo-aeneis, basi flavidis, apice violaceo-purpureis, ciliis 



