82 CApril,^ 



The full-grown larva is about 10 mm. long when extended ; slender, tapering 

 posteriorly ; head pale yellowish-brown, mouth-parts marked with darker brown, 

 top of lobes, median suture, and clypeus narrowly edged with the same shade ; 

 segmental divisions, wrinkles, and a bi'oken longitudinal line of subdorsal indenta- 

 tions, strongly defined ; ground colour of body pale yellowish-brown, showing chiefly 

 at the divisions and wrinkles, otherwise the dorsal surface is almost entii'ely of a 

 dull purplish-red tint, paler towards both extremities and below the spiracles ; plate 

 on 2nd segment very transparent, lobes of head showing plainly through it, with 

 brown cloud on its outer edge ; flap clouded with brown, legs pale yellowish-brown ; 

 tubercles and bristles small and colourless ; ventral surface and claspers paler than 

 the dorsal, tinged with pink. 



The larvae, when removed from their galleries, crawl actively and twist about 

 violently when irritated. They formed firm cocoons of silk and sawdust. Owing 

 to the difficulty of keeping the food-plant fi'esh, but few pupse were obtained, so I 

 did not venture to open the cocoons to examine them. Six moths emerged in the 

 spring of 1890. 



It would be interesting to know of what species of Pancalin, in 

 which genus he includes, besides Leuwenhoehella and Latreillella, 

 Woodiella, fusco-eeneella, smd J'usco-cuprella, Stephens knew the larvse. 

 He writes (111., iv, p. 275) " The larvae feed on the inner substance of 

 leaves, like those of the allied genera, and not on the surface." 

 Linnaeus, too, gives the following foot note to P. Leuwenhoehella and 

 other species of Tineina: — " Subcutanese hse minutissimse, quae intra 

 folii substantium vivunt, rodunt." (Syst. Nat., i, 897). 



Fairlawn House, Worthing : 



February 2bth, 1893. 



LITHOCOLLFTIS CEBASWOLELLA, H.-S., A SPECIES NEW TO 

 THE BRITISH FAUNA, AT DONCASTEE. 



BT H. H. COEBETT, 



I have pleasure in adding the above species to the British list. 

 Last autumn I collected the mines of the larvae in the leaves of Primus 

 avium, and I have now bred a few of the imagines. One of the 

 latter I have sent to Mr. Barrett, who confirms my opinion that it is 

 undoubtedly Ziifh. cerasicolella, H.-S. 



Appended is a description of the mine, the larva, and the imago : 



The mine is elongate, and placed between the lateral Teins of the leaf of P. 

 avium, reaching from near the mid-rib towards the margin. 



The larva is pale yellow ; second segment orange-yellow. Head dark brown or 

 black. Legs grey. 



The imago belongs to the pomifoliella group, and is very like spinicolella, but 

 the following points serve to distinguish it from that species. Colour more orange- 

 red. The first dorsal streak is more gradually curved, and its apex does not point 



