I. TRÄGÅRDH, LEPIDOPTEROUS LEAF-M1NERS. 



11 



In Elachista (fig. 11), I have only been able to find 5 

 ocelli, three of which are dorsal while two are ventral. 



In Tischeria (fig. 12) which is distinguished by the almost 

 plane dorsal surface of the head-oapsule and the very acute 

 lateral margin of it, we find that they are actually placed in 

 one row, one behind the other, dorsally, and as in Cemiostoma, 

 three ånd three more closely together. The anterior one is 

 slightly smaller than the others; the pigment, which in Ornix 

 formed a single mäss, is divided into 6 portions. 



Finally, in the young Lithocolletis (figs. 15, 16) the ocelli 

 are arranged in a longitudinal row as in Tischeria, and col- 



Fig. 8. Fullgrown larva of Ornix sp., head capsule, lateral aspect. X 156. 

 Fig. 9. Left side of capsule with ocelli, Laverna sp., dorsal aspect. 

 Fisr. 10. » » » » » » Cemiostoma laburnella, dorsal 



aspect. X 156. 

 Fig 11. Dito of Elachista sp-, ventral aspect. X 156. 

 Fig 12. Ocelli of Tischeria ekebladhella, dorsal aspect. X 250. 



lected in an anterior and a posterior group, each of 3 ocelli, 

 but five of them are almost atrophied without any lenses or 

 pigment, only the vitreous bodies being discernible as small 

 light refracting spherical globules. The anterior ocellns, on 

 the other hand, is highly developed, several ti mes larger 

 than the others. The different species of Lithocolletis seem, 

 however, to differ as to the number of ocelli reduced; in one 

 species, not identified, there are 4 of them placed two and 

 two close together in a longitudinal row, the two anterior 

 ones being the larger. Finally, in Eriocrania (fig. 13) all 

 ocelli save one are completely atrophied; the remaining ocellus 



