1899.] 255 



The white teeth are very lustrous, conspicuous, and moderatelj broad ; they are 

 narrowly black-margined internally, and the first costal and first two dorsal ones 

 are also partly black-margined externally. Dorsal margin generally without any 

 wliite line or spot near the base ; when present it is reduced to a minimum. At the 

 apex is a black streak. Exp. ah, 6.75 — 7.75 mm. Posterior tarsi dark-spotted 

 above, as a rule, occasionally plain. 



Very similar in colour to hlancardella, F., but much smaller in 

 size. It closely resembles pyrivorella, Bnks., in the character and 

 shape of the white markings, in the basal streak rarely showing any 

 tendency to unite with the first dorsal tooth, and in the absence of a 

 white line or spot on the dorsum near the base, but is so viuch smaller 

 and brighter that they are separable at a glance. The posterior 

 tarsi, usually strongly dark-spotted, are occasionally unspotted, and no 

 doubt Frey's reuiark (Tin. u. Pter. Schweiz, 340), that they are either 

 dark-spotted or plain, is due to the fact that the first specimen in his 

 series has them unspotted, and the next two have them less distinctly 

 spotted than the rest. 



I have treated L. tormineUa, Frey, as identical with Tinea mespi- 

 lelJa, Hb., on the following evidence submitted to me by Mr. Durrant. 

 Hiibner's coloured figure, though not good enough to identify with 

 certainty, clearly represents a Lithocolletis, which, presumably, was 

 known to him to feed on Mespilus, or he would not have named it 

 mespilella. The only two species known to us to feed on Mespilus are 

 corylifoliella, Hw., and tormineUa, of which Frey bred the former from 

 upper-side, and the latter from under-side mines in leaves of Mespilus 

 amelancJiier. In Lep. Schweiz, 4<14i— 5, Frey records this, under the 

 name '■''Amelanchier,'' as a food-plant of these species, and a MS. note 

 of his, lately found by Mr. Durrant among Stainton's papers, supplies 

 full details about his rearing them from it. We are therefore justified 

 in assuming that either corylifoliella or tormineUa is identical with 

 mespUella, Hb., but since Hubner's figure is certainly not meant for 

 corijlifoliella, it is probably intended to represent tormineUa, and 

 moreover it agrees as well, or better, with this than with any other 

 species. 



{To he concluded next No.). 



ON THE CLAIMS OP DASYDIA TORVARIA, Hb., AND MNIOPHILA 

 CINERARIA, Hb., TO BE CONSIDERED BRITISH SPECIES. 



BT C. G. BAERETT, F.E.S. 



In the course of study of the Geometridce, as a group, it has 

 become necessary to investigate the claims of the two s])ecies, de- 



