AND THEIR TRANSFORMATIONS. g,, 



L. Vau-nigra, S. Papyratia, and S. Urtic«, are from specimens iu the Britisl. Museum ; L. ccenosa is from tl,e cabinet of Mr. Stephens ; tl.e 

 varieties of S. lubricepo.la and S. Menthastri are from the cabinet of Mr. Bentley ; the S. radiala is a fresh female specimen, much finer than the 

 originiil male specimen of the Ilaworth cabinet (also in possession of Mr. Bentley), hut perfectly agreeing with it in the general character of the 

 markings : all the others are from specimens furnished by Mr. If. noubleday. The caterpillar of P. cI,rysorrh,« is drawn from nature ; that 

 of L. coidosa is from Curtis : all the others arc from Ilubuer. II. N. H. 



L.ELIA, Stephens. (ORGYIA, p. Boisduval.) 

 In this genus we find tlie caterpillar (fig. G) closely resembling that of the Vapourer moths (pi. 17, fig. 9 

 and 12), which has evidently induced Boisduval to unite its typo with that genus ; from which it may, 

 however, be distinguished by its very diflfcrcntly-formed wings, longer antenna;, with the branches termi- 

 nated by several diverging bristles, and winged females; which, nevertheless, iu their robust bodies and 

 comparatively short wings, as compared with those of the males (a striking peculiarity), evidently show an 

 approximation to the Vapourers. The caterpillars, moreover, construct an opaque, nearly oval, cocoon. 



SPECIES l.—L/KLIA CffiNOSA. Pwte XVllI., Fig. 5 and C. 

 Synonvmes. — Bombyx cwnoxa, Hiibner; Curtis, Biit. Ent. 2, pi. C8 ; Wood, Ind. Ent. tab. 7, fig. 61. 



This species measures 1^ to li inch in the expanse of the fore wings, which in the males are, together with 

 the head and thorax, of a pale ochre-brown, with a slightly defined row of brownish subapical spots. The 

 abdomen and hind wings are paler. The female is white, slightly tinged with bufl". 



The caterpillar is black, tliickly clothed with yellowish hairs, and fnur thick yellow tufts down the back, and 

 with two long black pencils of hairs at the head and tail. It feeds on (he Butomus umbellatus iu July, and 

 the moth appears in the same or the following month. It lias hitherto occurred only in the fens of 

 Whittlesca Slere. 



Arcturds Sparshalii (Curtis, Brit. Ent. pi. 33(1 ; Wood, Ind. Ent. tab. 7, fig- 63) ; a cream-coloured 

 in.sect, with orange-coloured antenna", and a very long fascicle of hairs at the tail, was stated by Mr. Curtis to 

 have been captured by Mr. Sparshall in a lane near Horning, on the 7th of August, 1829 ; but from information 

 given to mc by Mr. Edward Doubleday, received from Mr. Sparshall himself, there is great reason to fear some 

 confusion of specimens liad taken place. Indeed, Boisduval expressly states that the insect is American — 

 " Habitat Amcricam et erronoa ut species Anglica adscriptus," Gen. et Ind. Lep. p. 67. In the veins of the fore 

 wings it docs not agree with any of the more typical Arctiidse. It is therefore omitted from the present work. 



LEUCOMA*, Stephens. (ORGYIA, p. Boisduval. LARIA, p. Hibner.) 



This genus is distinguished from all the preceding by the snowy whiteness of the wings, which are but 

 sparingly covered with scales ; the palpi are short and acute ; the body is not spotted, and the back not crested. 

 From the next genus it is at once separated by the caterpillars, which have tufts down the back, but without 

 elongate-clavate pencils of hairs. 



SPECIES 1.— LEUCOMA V. NIGRUM. Plate XVIII., Fig, 1. 



Synonvmes. — Bombyx Vau-nigrum, Fabricius ; Ilaworth ; Ochsenheimer ; Stephens (Leucoma V-n.) ; Wood, Ind. Ent. t. 7, fig- 02. 



Bombyx nivosa, Iliibner. 

 This species measures li^ inch in the expansion of the wings, which are snowy-white, the anterior marked 



Named from the Greek, in allusion to the white colour of the moth. 

 N 



