231 BRITISH LEPIDOPTERA. 



b. Antennae 12- join ted ; tarsal joints 3-, 4-, and 4-jointed respectively; scales 

 variable from those in which length = breadth, to those in which length = five times 

 breadth, truncate, very rarely rounded (Bignasco). 



c. Antennae 12-jointed ; tarsi 3-, 3-, 3-jointed respectively ; scales very broad, 

 length only twice the breadth; metathorax dark brown (Bowers-Gifford). 



d. Antennae with fewer than twelve joints; tarsi 3-, 3-, 3-jointed respectively; 

 scales varying from those in which the length is twice the breadth, to others in 

 which the length equals breadth (Deal). 



We have already noted the peculiarities of the conical larval case 

 presented by Lufjia, but might add that when the Luffiid larva spins 

 itself up for pupation, the mouth of the case is contracted and applied 

 flatly to the surface or in a crack, so that the pupa-containing, and 

 empty, case is much more like that of Solenobia than one containing 

 a feeding larva. Its larva is equally characteristic (although very 

 similar to Bacotia) when compared with those of Famea, &c. It is 

 almost entirely dark fuscous, the head and thoracic plates black, with 

 a paler shade in middle of these, not apparently dividing that of pro- 

 thorax into two plates, but although it apparently divides the mesothorax 

 (and really, probably, divides both as observed under the microscope). The 

 trapezoidal tubercles are not only reversed, but ii has advanced to be 

 almost in a line with i. The abdominal segments have a dark dorsal 

 line, the dorsal surface of the segments with little or no sculpture 

 (subsegments, &c), but, although impressions of the lateral flange can 

 be made out, the larva is really very smooth and rounded. The third 

 thoracic segment is very large ventrally, allowing of the peculiar 

 method of walking (with the abdominal segments raised in the air) 

 characteristic of this and certain young Macro-Psychid larva?. The 

 larva of Bacotia is especially like that of L. ferchaultella (the latter is, 

 however, somewhat paler). Compared with the larvae of Paclnjthelia 

 villosella, Fumea saxicolella, and Whittleia reticella, the larva is 

 shorter, stouter, and more grub-like, with a relatively large head and 

 thorax in comparison with the abdomen. The prolegs are structurally 

 very like those of the Macro-Psychids, the ring of hooks incomplete on 

 the inner margin with a dark central pit, as in P. villosella (Bacot). 

 The pupal structure is practically identical in Bacotia and Lujfia, 

 although the former is larger and more bulky. 



LlJFFIA LAPIDELLA, Goeze. 



Synonymy. — Species : Lapidella, Goeze, " Ent. Beit.," hi. (4), p. 168, no. 289 

 [with reference to Keaum., "Mem.," hi., pi. xv., figs. 1-3, and Geoff., " Hist. Ins.," 

 p. 204, no. 53] (1783); Jung, " Alph. Verz. Schmett.," p. 306 (1791); Zell., "Linn. 

 Ent.," vii., pp. 357-8, Anm. a (1852) ; Staud. and Wocke, " Cat.," pp. 266, 425, 

 no. 1332 (1871) ; Mill., " Cat. Lep. Alp.-Mar.," p. 295 (1875) ; " Nat. Sic," v, p. 

 130, no. 1332 (1886) ; Hrtmn., " Mitt. Miinch. Ent. Ver.," hi., p. 195, no. 1332 

 (1879) ; [? Turati, " Bull. Soc. Ent. It.," xi., p. 198 (1879)]; Curo and Tur., Ibid., 

 xv., p. 3 (1882) ; Bebel, " Ann. K. K. Hoims.," vii., pp. 266-7, 282 (1692) ; Ibid., 

 ix., pp.17, 88(1894); Tutt, "Ent. Bee," xi., pp. 191, 207 (1899); Chapnm., Ibid., 

 pp. 201, 294 (1899); Walsm., Ibid., pp. 257, 259(1899). Lichenosa, Geoff.," Feme. Ent. 

 Paris.," ii., p. 336, no. 53 (1785). Lapicidella, Zell., " Isis," 1838, pp. 717-8 ; Ibid., 

 1847, pp. 801-2, no. 356. Pectinella, Dup., " Hist. Nat.," supp. iv., 512, no. 621, 

 pi. lxxxix., fig. 6 (1842) ; Gn., "Ann. Sec. Ent. Fr.," xv., 2nd ser. iv., pp. 11, 14- 

 15 (1846) ; Zell., " Stett. Ent. Zeit,," xi., p. 60 (1850) ; Staud. and Wocke, "Cat.," 

 p. 105, no. 1169 (1861); Jourd., "Ann. See. Ent. Fr.," xxxix., 4 ser. x., p. 115 (1870). 

 Lapidicella, Dup., " Cat. Melh.,"p.358 (1846) ; Gn.. " Ann. Sec. Ent. Fr.," xv.,2nd 

 ser. iv., pp. 11, 14 (1846) ; Zell., " Stett. Ent. Zeit.," xi.. p. CO (1850) ; Hdrch., 

 "Lep. Eur. Cat.," p. 78, no. 20 (1851) ; Ghil., " Fn. Ent. It.," p. 78 (1652) ; Bid., 

 " Mon. des Psych.," pp. 90-1, 118, no. 66, pi. ii., figs. GGa-b (1853) ; Sta., "Tin. S. 

 Eur.," 2, pp. 283, 322 (1869) ; Luff, " Mic.-Lep. Guernsey," p. 9 (1899). Pectina- 



