propriety be included in the same genus ; G. 7-uhricosa, for in- 

 stance, is different to G. Vaccinii in its contour and texture, 

 and it has not a depressed abdomen, so that it appears to be 

 more allied to Orthosia : G. SatelUtia has elongated and den- 

 tated superior wings, the apical joint of the palpi is perfectly 

 concealed, the tufts of hairs I,have detected at the base of the 

 abdomen in the males I have not been able to discover in any 

 of the other species, and the habits of the caterpillar are very 

 anomalous, for these reasons I have now separated this insect. 



The larvae of S, SatelUtia are generally beaten from the 

 oak, but according to Ochsenheimer they are found also upon 

 the pear-tree, beech, elm, raspberry and gooseberry ; it is said 

 that they come out to feed only in the night, like a great number 

 of other caterpillars; and it is a remarkable fact that they will 

 devour other larva? if they be confined in a box together, and 

 even those of their own species, an unnatural propensity in 

 which they resemble the larvee of Cosmia trapetzina, called 

 monsters by collectors*. They vary materially in colour, but 

 are generally, I believe, nearly black, like the figure in our 

 plate, which is copied from Hiibner ; others are green or yel- 

 lowish-orange, with a distinct white lateral line immediately 

 below the spiracles, with many dots of a paler tint than the 

 ground-colour upon each segment. 



The moth has received its specific name from the two little 

 dots, sometimes white, at others deep orange, which accom- 

 pany the larger spot of the same colours on the disc of the 

 upper wings : the generic name alludes to the brushes of hair 

 at the base of the abdomen. S. SatelUtia is by no means un- 

 common in this country, where it does not appear until the 

 autumn, but in France it is found in July and August. I be- 

 lieve we never find it before the middle of September, but it 

 remains to a very late period. Mr. Walton detected speci- 

 mens on the yew-trees in Norbui'y Park the beginning of No- 

 vember, and I think Capt. Chawner has met with it as late in 

 the year. 



The Plant is Arabis, or Turritis, hirsuta. Hairy Tower- 

 Mustard. 



* Mr. J. Staiulisli informs me tliat CucMU'ia ScrophuJaricp, the Water 

 Ectony, Ridzolilha Ldvibda, the Grey Slioulder-knot, aw^Miselia Oxyacan- 

 llicc, Ealing's Glory, liuve the same carnivorous appetite. 



