PACKARD. — TRANSFORMATIONS OF SATURNIAN MOTHS. 567 



and of the same thickness to the end of the body, but the anal legs are 

 large and triangular. 



The tubercles are larger and more prominent than before, and very 

 conspicuous, as they are white or yellowish white. The prothoracic 

 plate bears long hairs, and on this segment there are no decided dorsal 

 tubercles, the vestiges being low and flattened, while the lateral ones are 

 fairly prominent and black. 



The 2d and 3d dorsal thoracic tubercles are no larger than the abdom- 

 inal ones ; those of the 3d thoracic segment a little larger, however, thau 

 those on the 2d thoracic segment; and those on the 6th abdominal seg- 

 ment a little larger than those on the 7th and 8th segments (one on the 

 6th is larger than its mate). 



The two dorsal tubercles on the 8th abdominal segment are separate, 

 like the others, and show no signs of coalescence ; they are slightly larger 

 than those on the 9th segment, which are also separate. 



Each dorsal tubercle gives rise to about four radiating stout, sharp, 

 slightly dusky setae, while from the centre rises a very long yellow hair, 

 or more often two or three, usually three such hairs ; the skin between 

 the tubercles bears on the top and sides of the body long fine white hairs. 

 The longest yellow hairs are abort one-third longer than the body is 

 thick. The area around the base of the tubercles is white, due to 

 crowded flattened snow-white warts, which are crowded around the base 

 of the tubercles and scattered between so that the dorsal region is white, 

 though interrupted ; the sides of the body are black, enclosing the dull 

 livid spiracles. The oval flattened tubercles are scattered along just 

 above the pleural swollen yellow line and beneath on the under side, 

 where they become straw-yellow. The tubercles of the 9th abdominal 

 segment bear setae which are mostly black or dark. The tubercles of 

 the supraspiracular row are prominent, but small, pale, and bear 8-9 

 short pale setae, with a very long yellow one (sometimes two) arising 

 from the centre. Those of the infraspiracular row arc about twice as 

 large as those of the supraspiracular series, and bear about nine setae 

 arising from prominent warts, while the setae assume the shape of long 

 uneven yellow hairs. 



The thoracic legs are black ; the mid-abdominal ones pale greenish- 

 yellow with the plantae reddish; anal legs large, broad, triangular, black, 

 spotted in the centre with yellow and with yellow hairs around the edge, 

 hut none arising from the central portion. Suranal plate broad, triangu- 

 lar, a little shorter than broad, roundish at the. cud, with Betiferoos white 

 warts, the hairs around the edges yellow ; two groups of 7-8 setae, one 



