AND THRIK TRANSFORMATIONS. 



D/ 



apical portion of tl.o wing being occupied by a large, oval, variegated, ocellated spot, tinged with purplisli, and 

 edged at the base with a brown lunule ; the outer and hind margin being edged with a slender, dark line. ' The 

 hind wings arc pale ashy, with a similar dark edging, and a dark, discoidal arch ; the anal angle brown. 



The caterpillar is ashy-coloured, with the under side purplish, and a pale lateral line ; it has only two dorsal 

 tubercles. It feeds on the poplar and willow in June and September, the moth appearing in May or the 

 beginning of Juno and August. It appears to be distributed over the greatest part of England, but is nowhere 

 of common occurrence. 



LEIOCAMPA,* Stephens. (PH.EOSIA, Hubner.) 



Mr. Stephens characterises this group as having the fore wings elongate, obtusely denticulated, and acute at 

 the tip, with one lobe on the hind margin ; the thorax not crested ; the antennae are bipectinated in both sexes 

 to the tip ; the pectinations shorter in the female ; and the palpi very minute : the larva^ are smooth on the 

 back, the penultimate segment alone having a dorsal tubercle; and the anal segment furnished with a pair of 

 perfect prologs. The cocoon is composed of pieces of wood, united by silk. Curtis and Boisduval regard this 

 group only as a section of Notodonta. 



SPECIES l.-LEK)CAMrA DICT.EA. Platk XIIL, Fig. 16, 17. 



SvNONTfMES. — Phal. {Bomb.) dicliea, Linnirus, S. N. 2, 825, No. 

 60 ; Wicn Vcrz., Ilubner, Ocliscnlicimer (Xotod. li.), Fain icius, 

 Esper. 



Phal. (Bomb.) tremvla, Linnaeus, Faun. Succ. Sjst. Nat. 2, 820, 



No. 58'; Haworth ; Curlis (Nolod. trcmiila). 



Leiocampa iHctaa, Sicphciis ; Wooil, Iiul. Ent. t. 5, f. 27. 

 Plialtena Ircpida, Donovan, 7, plate 239, fig. 1 ; Leach, Samouille. 

 P/iteosia dictiea, Iliilincr, Vei-z. bek. Schm. 



This species varies from 2 to 2 j- inches in the expansion of the fore wings, which are of a greyish-white 

 colour towards the costa, except at the tips, broadly clouded with brown, witli two or three black lines near the 

 apex; the posterior margin of the w-ing is broadly black, through which runs an interrupted, whitish line, and 

 there are several greyish linos at the anal angle; the apical margin is marked by a blackish line, preceded by a 

 white one ; the hind wings arc white, with the anal angle brown, through which runs a white line. 



The caterpillar is shining, dark, reddish brown, often with a violet tinge, the jfenultiniate segment conically 

 elevated. It feeds on all kinds of poplars, willows, and on the common birch ; and is found in June and 

 October, and the imago occurs in June and August. It is not a common species ; but is met with in the woods 

 near London, near Dover, York, and in Norfolk and other localities. 



SPECIES 2.— LEIOCAMPA DICTiEOIDES. Plate XIII., Fig. 18, 19. 



SvNoNYMEs. — Bombyx diclaoides, Espcr, Brahm ; lliibncr, Bomb, j Phaosia diclieoides, Hiibner, Vcrz. bek. Scboj. 

 tab. 6, f. 23, 24 ; Haworth. Bombyx Gnoma, Fabricius. 



Leiocampa diclteoides, Stephens ; Wood, Ind. Ent. pi. 5, fig. 28. I 



This species is generally rather smaller than the preceding, which it gi-eatly resembles, but is distinguished by 



being dai-ker-coloured, with the hind margin more broadly brown, on which is a white stripe bordering a black 



* Derived from Aeios, Irevis, and KafiTrri, eruca ; the caterpillars being smooth. 



K 2 



