AUCTIIDiE. LEUCOMA. 63 



wings are also difTcrcnt, and the larva is not only furnished with 

 compact dorsal tufts, but constructs an opaque fusiform dense fol- 

 liculus. 



Sp. 1. coenosa. Alls pallide ochraceo-fuscis, strigd posticd pundorum ohsoletorum 

 fuscorum (aut alhis immaculatisj ; paljris pedihusqiie luteis. (Exp. alar. $ 

 1 unc, 7—9 lin. : $ 1 unc. 6—9 lin.) 



Bo. coenosa. H'dbner. — Ar. caenosa. Curtis, ii. pi. 68. — Lae. ccenosa. Steph. 

 Catal. No. 6011. 



Head, thorax, radii of the antenna;, and anterior wings pale ochraceous-fuscous, 

 the basal areolet and thinner margin whitish, the hinder margin with a curved 

 series of more or less distinct fuscous spots, nearly parallel with the hinder 

 margin : posterior wings ocliraceous, or whitish, with a fuscous margin : cilia 

 of all the wings ochraceous or whitish: abdomen whitish: palpi and legs 

 luteous, with the inner side of the latter dusky. Female white, with the legs 

 and palpi luteous. 



Caterpillar dusky, spotted with ochraceous, with pale yellowish hairs ; four light 

 luteous- yellow dorsal tufts, two dark elongate fascicles of hair on the head, 

 and one on the tail : it feeds on the burr-reed ; and is found simultaneously 

 with the imago at the end of July and the beginning of August : the pupa is 

 deep glossy black, and is enclosed in an elongate fusiform cocoon. 



This insect was discovered in profusion by Mr. B. Standish on 

 the borders of Whittlesea Mere in July, 1820, while in search of 

 the beautiful Lyceena dispar, though the larva had been taken by 

 Mr. Dale in the same vicinity several years previously, without 

 his being acquainted with its metamorphosis. I believe no other 

 locality has yet presented itself. 



Genus LXV. — Leucoma, Hubner. 



Palpi short, bent upwards, hairy, cylindric, triarticulate, the intermediate joint 

 longest, the terminal shortest, obtuse : maxillce very short. Antennw acute, of 

 equal length in both sexes, deeply bipectinated in the males, the pectinations 

 gradually shortened towards the apex, ciliated, and furnished with one or two 

 fine setae at the tip, shortest in the females : head small, hairy, with a distinct 

 fascicle of scales at the base of each antenna : thorax short, woolly : abdomen 

 tufted in the males, very robust and acute in the females : wings deflexed, 

 rather broad, trigonate, with remote scales: legs robust; femora and tibia: 

 shghtly fringed with hair. Larva with fascicles of hair on each side, and 

 sometimes with loose dorsal tufts: pupa sUghtly hairy, enclosed in a loose 

 orbiculate cocoon : eggs enveloped in a friable silken matter. 



Leucoma differs from Lselia, in having the palpi abbreviated, 

 rather divergent, less hairy, and the projections of the joints dis- 

 similar ; the antennae are of equal length in both sexes, and consider- 



