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88 BRITISH MOTHS 
slight dentate stripe, which is very indistinct in the females. There are two slightly-curved dusky, slender 
fascize (one before and the other beyond the middle of the wing), the space between which is much darker in the 
males and bears an oval discoidal paler spot; parallel with the outer margin runs a waved slender stripe 
(very indistinct in the females), and the fringe is spotted with dusky. 
The caterpillars, which from frequenting hop-plantations, are well known under the name of Hop-dogs, are 
yellow, with the head clay-coloured, several large whitish tufts of hairs on the back (the articulations between 
which are black), and a larger reddish one on the tail. It feeds on various plants in the autumn, and the moth 
appears in May and June. 

DEMAS, Srernens. COLOCASIA, Ocusenuermer. 
This genus has distinct but very short palpi, as well as a spiral tongue ; the antenne rather long, and only 
moderately bipectinated in the males; the wings are densely squamose; the thorax is distinetly crested, the 
abdomen tufted, and the larve have several dorsal tussocks of hairs. 

SPECIES 1.—DEMAS CORYLI. Puare XVII., Fie. 20, 21. 
Synonymes.— Phal. (Bomb.) Coryli, Linnzeus; Haworth ; Donovan, 9, pl. 309; Albin, pl. 90, fig. e—h ; Wilkes, pl. 66; Stephens 
(Demas C.); Wood, Ind, Ent. pl. 6, fig. 58. 
This species measures from 13 to 18 inches in expanse of the fore wings, which are of a rusty brown colour ; 
the base ashy grey, followed by a broad bar occupying the middle of the wing, but paler towards the costa, 
bounded on each side by a dark waved streak, and enclosing a discoidal black ring and various irregular dark 
lines ; the hind portion of the wings is pale, with an undulated brownish stripe running parallel with the outer 
margin of the wings. ‘The hind wings are paler, generally with a dusky subapical fascia. The various markings, 
however, vary considerably in different individuals. 
The caterpillar is red, with two red tufts of hairs on the back, and elongated fascicles of hairs on the neck. 
It feeds on the birch and hazel. It appears in May and September, and the moth in April and July. It 
occurs, but rarely, in woods round London, as well as in other parts of the kingdom. 
DESCRIPTION OF PLATE XVIII. 
Insects.—Fig. 1. Leucoma vau-nigra (the black V Satin moth). 
rs Fig. 2. Stilpnotia Salicis (the satin moth). 3. The Caterpillar. 4, The Chrysalis. 
= Fig. 5. Lelia Ceenosa (the Whittlesea tussock), 6. The Caterpillar, 
- Fig. 7. Porthesia Chrysorrheea, male (the Gold-tailed moth). 8. The Caterpillar. 
aS Fig. 9. Porthesia auriflua, male (the Brown-tailed moth), 10. The Female. 11. The Caterpillar. 
a Fig. 12. Spilosoma Menthastri (the large ermine). 13. The Caterpillar. 
os Fig. 14. A variety of S. Menthastri, by some made a species, S. Walkerii. 
os Fig. 15. Spilosoma Papyratia (the water ermine). 
“ Fig. 16. Spilosoma Urticx (the dingy white ermine). 
sh Fig. 17. Spilosoma Lubricepeda (the spotted buff ermine). 18. The Caterpillar. 
A Fig. 19. A variety of S. Lubricepeda, by some made a species, S. radiata. 
is Fig. 20. Cyenia mendica, male (the spotted muslin). 21. The Female. 22. The Caterpillar. 
Prants.—Fig. 23, 23. Salix Doniana (Don’s Willow). 
a Fig. 24. Sparganium ramosum (the Burr-reed). 
» Prunus spinosa (the Sloe). 
= 
2 
ho po 
qr 
o 
Mentha rubra (the red Mint). 


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