180 Transactions. — Zoology, 



as exhibiting a step in transition to the Erechthiadce and Plu- 

 tellidcB. The species described here are all very difficult to see 

 when on the wing, and therefore likely to be passed over. The 

 known exotic larvae are apodal and miners. 



Under the head of PaltBomicra I give a comparison of the 

 neuration of that genus with those Newroptera (Trichoptera) 

 which approach it most nearly. 



la. Forewings with additional costal veins ; labial 



palpi very short .. .. .. ..12. Palceomicra. 



lb. Forewings without additional veins; labial 



palpi rather long, brushlike .. .. .. 11. Mnesarchaa. 



11. Mnesakch.ea, 11. g. 



Head loosely haired, somewhat rough ; ocelli present ; tongue 

 obsolete. Antennae f, stout, filiform, in male simple, basal 

 joint moderate, without pecten. Labial palpi moderately long, 

 straight, porrected, clothed with long loose scales forming a 

 dilated terminal brush. Maxillary palpi moderate, porrected, 

 terminating in a loose dilated brush. Abdomen in male with 

 uncus and valves well developed, and two long linear internal 

 processes. Posterior tibia? thinly clothed with long bristles, 

 middle and posterior tarsi with whorls of projecting bristles at 

 apex of four basal joints. Forewings with vein 1 simple, 2 

 almost from angle of cell, 6 out of stalk of 7 and 8 near base, 

 7 and 8 stalked, 7 to hindmai*gin, 11 absent. Hindwings £ of 

 forewings, lanceolate, cilia rather over 1 ; neuration exactly as 

 in forewings, except that vein 6 is separate from 7. 



26. Mnes. paracosma, n. sp. 



Male, 9-10 mm. Head, palpi, and antennae whitish- 

 ochreous. Thorax light brownish-ochreous. Abdomen grey. 

 Legs dark grey, bristles whitish-ochreous. Forewings lanceo- 

 late ; yellowish-ochreous, suffusedly mixed with dark fuscous 

 and a few grey- whitish scales, except towards costa anteriorly ; 

 a grey -whitish oblique wedge-shaped streak from middle of costa, 

 reaching almost to anal angle ; the dark fuscous scales tend to 

 form a spot in disc before this ; a deeper suffusion beyond it, 

 especially towards costa, and a spot towards inner margin before 

 middle : cilia light brownish-ochreous, somewhat mixed with 

 dark fuscous and whitish. Hindwings fuscous-grey, somewhat 

 purple-shining ; cilia grey. 



Lake Wakatipu (1,100 feet), and Invercargill ; nine speci- 

 mens, flying amongst rough herbage in December. 



12. PaluEomicra, n. g. 



Head with long rough hairs ; ocelli present ; tongue obso- 

 lete. Antenna? J— f, in male filiform, pubescent, basal joint 

 small, concealed. Labial palpi extremely short, rudimentary. 

 Maxillary palpi long, folded, loosely scaled. Abdomen in male 



