22 Transactions. — Zoology. 



9. Semiocosma, Meyr. 

 Head with appressed scales, sidetufts large, loosely appressed. Antennae 

 in male stout, very shortly ciliated (£), basal joint moderate, without pecten. 

 Palpi moderately long, second joint not exceeding base of antenna, 

 thickened with dense scales, somewhat loose beneath, terminal joint rather 

 shorter than second, slender, recurved, with a tooth of erect scales in 

 middle on posterior surface. Thorax smooth. Forewings elongate, 

 moderate, apex rounded, hindmargin almost straight, oblique ; surface with 

 tufts of raised scales. Hindwings as broad as forewings, elongate- trape- 

 zoidal, hindmargin faintly sinuate, cilia f. Abdomen moderate, slightly 

 flattened, distinctly margined. Middle tibia? with a median whorl of pro- 

 jecting hairs, roughly short-haired beneath ; posterior tibia? with moderate 

 dense somewhat appressed hairs above. Forewings with vein 7 to costa, 2 

 from considerably before angle of cell. Hindwings with vein 5 bent and 

 approximated to 4 at base. 



Not nearly allied to any New Zealand genus except Aochleta, and distin- 

 guished from all genera of the family, except the South American Gonionota, 

 by the median tooth of scales on the terminal joint of the palpi ; from 

 Gonionota, which possesses similar palpi and also tufts of scales on the 

 surface of the forewings, and is doubtless nearly related, it may be separated 

 by the smooth thorax (in Gonionota the thorax is crested), and probably by 

 other points, but Zeller's description of the genus is given in so little detail, 

 that they cannot be stated. There can also be little doubt that the genus 

 has some true affinity with the European Psecaclia. 



The genus is confined to New Zealand ; I have five species, of which 

 the Mowing is a tabulation : — 

 la'. Head dark fuscous . . . . . . . . . . . . . . 23. austera. 



lb. ,, white or green. 



2a. Ground-colour of forewings suffused. 



3a. With a sharply angulated blackish transverse line about J 21. epiphanes. 



3b. Without angulated anterior line . . . . . . . . 22. prasophyta. 



2b. Ground-colour of forewings clear. 



3a. With three transverse strigas . . . . . . . . . . 20. picarella. 



3b. With disconnected marks 19. peroneanella. 



19. Sem. peroneanella, Walk. 



(Gelechia peroneanella, Walk., Brit. Mus. Cat., 658 ; Cryptolechia lichenella, ib. 769 ; 



CEeophora huttonii, Butl., Cist. Ent., h\, 511.) 



Media, alis ant. dilute viridibus, signis plerisque contortis serieque punc- 

 torum marginis postici nigris ; post, albidis, apicem versus griseis. 



Male, female. — 15-27 mm. Head pale green, or sometimes whitish. 

 Palpi pale green, second joint with basal third and a subapical ring, ter- 

 minal joint with apex, a median band, and a dot near base black. Antenna? 



