PKOUTIA BETULINA. 287 



betulina," he is in error, since the specimens we have examined show 

 salicolella (i.e., eppingella) to have shorter and rounder wings than 

 betulina.-'- Our criticism (Ent. Record, xi., p. 211), therefore, wants 

 modifying in this particular. We suspect that Barrett's ? F. betulina 

 (Ent. Mo. Mag., xxxi., p. 275) " thinly covered with dark grey scales," 

 is, after all, also B. sepium, as the ? s of the Proutias are particularly 

 naked, and carry only a few whitish hairs. f 



Compakison of P. betulina and P. KOUASTi. — Fumea roaasti, m. 

 $ . Antennis composito-pinnatis, fuliginosis ; alis griseis densis 

 squammatis, oblongis ; ciliis albidis subnitidis. Ala? anteriores costis 

 xi, cellula media cellula intrusa ; alae posteriores costis vii. Thorace 

 abdomineque nigris griseo-villosis. Pedibus canis ; tibiis posteriori- 

 bus latis, compressis. Expansio alarum 12-14mm. Habitat : Ala 

 Tau (Turkestania Rossica) (Heylaerts, Ann. Soc. Ent. Belg., xxii., p. 

 cxl (1879)] . A further description of this species (with figures) is 

 given by Heylaerts (Rom. Memoires, ii., p. 190), based on three speci- 

 mens taken June 5th, 1877, by Haberhauer. In it he states that F'. 

 rouasti has the same shaped wings as sepium, but is very different from 

 it in neuration, which resembles that of betulina. The head is black, 

 covered with grey- brown scales, very short, the pseudopalpes having a 

 similar colour. The antennae, half the costal length, have the shaft grey, 

 the pectinations darker and shorter than those of betulina. The black 

 thorax and abdomen are covered with grey scales .... The 

 anterior tibia? have a very long spine ; the posterior are very long, wide, 

 compressed and whitish, and have two pairs of strong spurs. The 

 anterior wings are elongated and narrow, the apex a little more 

 rounded than that of sepium .... The scales are narrow and 

 shorter than those of its congeners ; the colour very clear fuliginous- 

 grey. The neuration is like that of betulina, but the discoidal cellule 

 differs in shape, being narrower and more elongated, and the cellula 

 intrusa is very long. The fringe is shiny, yellowish-white, longer 

 than those of the known species. 



Ovum. — About -75mm. in length, -45mm. in width, oval in out- 

 line (a longer oval than that presented by the egg of L. lapidella), 

 almost circular in cross section, pale yellow in colour, the surface 

 smooth and shiny, no structure apparent. (Bacot. Described July 

 9th, 1899, from unfertilised eggs laid by ? bred from Chingford 

 larva.) 



Case. — The case is about 8mm. in length, and 3mm. wide, roughly 

 and bluntly conical (diminishing slightly behind, so that the posterior 

 end appears somewhat thinner), the larval head being protruded from 

 the wider end. The case is composed of silk, covered with lichen, chips 



* With regard to the doubt that we here throw on Mitford's salicolella, it must 

 be confessed that there is little direct evidence. Chapman notes a case in the 

 Stephensian collection labelled salicolella, (from Mitford), and probably correct. 

 Tbere can be no question that the anicanclla in the same collection <? , ? , and 

 cases are really P. betulina. It is difficult to understand the statement of Mitford 

 (Zool., p. 7453) that " the females of salicolella remain within the larval case." 

 Chapman notes among certain Proutias (betulina) from Dr. Mason (all labelled 

 Mitford), a male with .se/in</»-shaped wings, white hind tibiae, &c, together with a 

 ? betulina, and large i and ? cases of betulina. A second Mitfordian ? is refer- 

 able to casta (nitidella). 



f Since this has been in type Chapman has examined the New Forest examples 

 and refers them to 11. sepium. 



