250 BRITISH LEPIDOPTERA. 



abdomen relatively large compared with the size of thorax. (In these 

 proportions it appears to differ from the larva of L. lapidella.) The 

 head and thorax together form about one-third the length, but com- 

 prise less than one-fourth the bulk, of the larva. The head and plates 

 on the thoracic segments are shiny black ; the abdomen and soft skin 

 surfaces of thoracic segments are dark grey or smoke-coloured. The 

 head is rounded, set rather vertically (Macro-Psychid type), and bears 

 some scattered, but rather long, brown hairs. The thorax is small, 

 the prothorax smaller than the mesothorax, and the latter smaller than 

 the metathorax ; the segments taper towards the head and anus from 

 the 2nd and 3rd abdominal segments (which are the largest) ; the anus 

 is rounded. The abdominal segmental incisions are distinct, and there 

 are traces of the subdivision of the segments into two subsegments. 

 The lateral ridges are well marked (but do not appear to be nearly so 

 prominent as in L. lapidella) . The skin on the dorsal area is finely 

 granular. The dorsal plate on prothorax complete, on the meso- 

 thorax narrow and separated from the lateral plates by a narrow gap ; 

 both these segments have a continuous dorsal plate, but a broad, pale, 

 smoke-coloured, V-shaped mark crosses them, its apex just touching the 

 anterior edge of the prothoracic plate and its base the posterior edge of 

 the mesothoracic where it joins the unplated skin- surface of the meta- 

 thorax ; the latter bears only a comparatively small subdorsal plate on 

 either side, and is but little better armoured than the 1st abdominal. 

 The rather raised hair-bearing surfaces of the lateral ridge (at base of 

 iii) carry horny or chitinous plates that are not noticeably darker in 

 colour than the general skin-surface, but the dorsal hairs either have 

 very small basal plates or they are entirely absent. The legs are large 

 and strong, but look small to bear the weight of the abdomen and case 

 when crawling. The prolegs are short, stumpy, of usual Psychid 

 pattern, bearing an incomplete oval of hooks with a pit or depression 

 in centre. The spiracles are small and dark in colour. The lateral 

 tubercular seta? are placed as in the Macro-Psychids — iii is supraspira- 

 cular and larger and longer than the others, iv is smaller and v very 

 small, both subspiracular and rather close together ; the dorsal setae 

 have very small inconspicuous chitinous basal plates, the setae 

 are just as in Macro-Psychid larvae, i small and outer, ii very much 

 larger and nearer the median line. The anus has a large dark-coloured 

 (but not quite black) dorsal plate and the hairs on it are rather long, 

 the anal prolegs have a larger but less perfect ring of crochets than the 

 abdominal prolegs. [Bacot. Described June 11th, 1899, from larva 

 obtained at Broxbourne, and probably half-starved for want of proper 

 food.] Stainton's description (M.S., F. 605, fig. B, 11) of the Bristol 

 ponwnae reads as follows: "Dark grey; head and second segment 

 shining black ; a shining blotch on sides of 3rd and 4th segments ; 

 mouth and anterior legs pale brownish. Long. 4mm. Constructs a 

 soft, green, lichen-covered case." Long. 5'5mm. From Bristol, on 

 lichen on fruit trees, July 7th, 1859." 



Pupa. — The pupa measured is 6mm. long ; pale red-brown in colour 

 paling to yellow on ventral area, and darkening almost to black on the 

 dorsum of the thoracic segments. It is widest at the 4th and 5th 



* Duiratit notes that Stamton made a r .ugh sketch of the case, wh ch could only 

 be compared with those of L. lapidella and L. ferchaultclla, but as Stainton knew the 

 larva and case of L. lapidella, it is obvioas that his pomonae was not that species. 



