176 STATES OF INSECTS. 



band, the rest being naked ; and in the lovely green and 

 black one of Satumia Pavo?iia, each tubercle bears but 

 six hairs, diverging like a star, the central one being the 

 longest and capitate, so that the chief part of the body 

 appears naked. This diverging position of the hairs is 

 most common in the thick-clothed larvae also, but many 

 have them placed differently : thus, in those of Callimor- 

 pka Caja and Arctia villica a they are all directed towards 

 the tail, like the quills of a porcupine : in some others 

 the anterior ones point towards the head : in that of 

 Eriogaster Quercus half of the tuft of hairs of each tu- 

 bercle is directed downwards, the other half upwards : 

 in that of Arctia Salicis all the hairs point downwards, 

 so that the belly is thickly covered, while the back is 

 bare. Another variation is, that the hairs of half the 

 tubercle are sometimes very long, while those of the 

 other half are very short, and even of a different colour b . 

 In the larva of Tussuck moths {JLaria pudibwida, fasce- 

 lina, &c.) the hairs are collected into tufts of a singular 

 appearance, those on the intermediate segments of the 

 back being quite level at the top, so as to resemble so 

 many brushes; while those on the first and last segments 

 are longer, and composed of feathered hairs converging 

 to a point at their extremity, like a common camel-hair- 

 pencil c . This last mode of arrangement prevails also in 

 the larva of Nociua Aceris ; but in this the pencils are 

 shorter, exactly wedge-shaped, and distinguished by an- 

 other particularity, that of springing directly from the 



a Sepp iv. t. ii./. 3. t. xvi./. 2, 3. 

 b JST. Diet. d'Hist. Nat. vi. 254. 



Plate XIX. Fig. 6. One of these larvae was taken at Mel- 

 ville Island. See Parry's Voyage, Appendix No. x. 37. 



