i)0 HAUSTELLATA. LEPIDOPTERA. 



Hypogymna and tlie following genus arc unquestionably greatly 

 allied, and were it not from the circumstance of the structure of the 

 palpi rendering- such a step necessary, I should not have separated 

 them; but the dissimilarity in the proportions of the joints of the 

 j)alpi, and in the abdomens of the respective females, sufficiently 

 point out the propriety of dividing them, if, as before stated, the 

 Lariat, &c. of Schrank, are disturbed : both species are placed by 

 Ochsenheimer in his genus Liparis (a name which cannot be em- 

 ployed gencrically in entomology, having been properly used by 

 Cuvier for i\ gams of fishes), along with Leucoma, Porthesia, and 

 Penthophera. 



Sp. 1. disiiar. Alis maris griseo fuscoque nebulosis, foemincE alhidis nigro-striatis. 



(Exp. alar. $ 1 unc. 6 lin.— 2 imc. 1 lin. : ? unc. 8 lin.— 3 unc 1 lin.) 

 Ph. Bo. dispar. Linnc.—Don. v. pi 163.— Hy. dispar. Steph. Catal. No. 6004. 



Male with the antenna?, thorax, and abdomen hoary-griseous : the anterior wings 

 clouded with cinereous and brown, sometimes nearly black, with obscure 

 dusky waves, the cilia brown and griseous ; posterior wings griseous immacu- 

 late. Female much larger, with the antennae black ; the head and thorax 

 whitish, the abdomen very stout, griseous-white, with the apex dusky-black 

 or brown : the wings white; the anterior with one or more undulated trans- 

 verse strigse, and costal spots, and a dusky black lunule ; cilia spotted with 

 dusky. 



Both sexes vary considerably ; the male is sometimes very pale fuscous, at 

 others almost black ; the female has the abdomen sometimes entirely whitish, 

 and the wings more or less suffused with cinereous or dusky; the posterior 

 wings are occasionally immaculate, and sometimes they have an undulated 

 transverse fascia. 



Caterpillar dusky, with whitish Unes, the anterior part spotted with bluish, the 

 posterior with red : it feeds on the oak, lime, fruit-trees, &c., in June, and 

 changes to a brown pupa : the imago appears in August : the eggs are covered 

 with down. 



Not common in the neighbourhood of London; it has occasionally 

 been taken at Coombe-wood, but in the fens of Huntingdonshire it 

 appears to abound, and may be taken in all its states at one time, 

 as the imago frequently appears long before all the larvae have 

 changed into pupje. It is said to have been introduced into Britain 

 by eggs imported by Mr. Collinson; but the abundance with which 

 it occurs near Whittlesea, and the dissimilarity of the indigenous 

 specimens (which are invariably paler, with stronger markings) to 

 the foreign, sufficiently refute that opinion. 



