AUCTIID.'E. PSILURA, 5T 



Genus LX. — Psilura * mihi. 



Palpi very hairy, triarticulate ; the basal joint nearly half as long as the seconil, 

 somewhat clavate; the second elongate, clavate; the terminal ovate, acute, 

 maxiUa obsolete. Antennas short, acute, very strongly bipectinated in the 

 males, shghtly in the females : head small, very pilose : thorax rather short 

 and downy : abdomen slender, and tufted at the apex in the male, rather short 

 and attenuated in the female, with the apex acute and naked: wings deflexed, 

 thickly clothed with scales : legs not very slender ; femora and tibice fringed 

 with hairs. Larva elongate, attenuated posteriorly, with fascicles of hair on 

 the back and sides ; those behind the head, and on the penultimate segment 

 longest : pujm smooth, with tufts of hair on the segments, the terminal one 

 with an obtuse projection: changes in a loose folliculus. 



This genus differs from the foregoing by having the basal joint 

 of the palpi elongate, somewhat triangular and clavate, the terminal 

 acute, and closely allied to the preceding; the female has the ab- 

 domen moderately stout, and attenuated posteriorly, with the ovi- 

 positor exposed. 



Sp. 1. Monacha. Alis albis atro undatis, incisuris abdominis sanguineis. (Exp. 



alar. $ 1 unc. 3 — 9 lin. : 5 1 unc. 9 lin. : — 2 unc. 5 lin.) 

 Ph. Bo. Monacha. Linne. — Don. vii. pi. 227. — Ps. Monacha. Steph. CataL 



No. 6005. 



Thorax white spotted with black; of the male with a black lateral line: abdomen 

 hoary, with the terminal segments sanguineous spotted with black : anterior 

 wings white, with various rarely confluent black spots at the base, a single 

 distinct one before the middle, three or four confused waved strigse behind, 

 another distinct towards the hinder margin, then a marginal row of black 

 dots : posterior dusky, with black and white ciUa ; or pale ash, with a darker 

 margin, and white dusky spotted cUia. Female larger and paler; in other 

 respects similar to the male. 



Var. /3. With the striga on the anterior wings united so as to form a deep black 



patch. 

 Both sexes vary considerably : in some males the posterior wings are deep fuscous, 



and in others nearly white, with a white marginal striga ; the females vary 



similarly. 

 Caterpillar ashy-brown, with red dorsal tufts, and a black heart-shaped spot on 



the second segment: it feeds on various trees, particularly the oak and 



bramble : it is found in June, and changes to a black hairy pupa : the moth is 



produced in Jvdy: eggs naked. 



Sometimes, though rarely, found at Coombe and Darenth woods ; 



■*"(/o,- nudus, ouja Cauda. 



