253 



stigma black, about twice as long as broad; marginal cell elougate, tapering, its 

 apex about twice as far from end of stigma as from apex of wing. Four submargi- 

 uals, second a little longer than third ; second receiving both recurrent nervures. A 

 hyaline mark gives the third trausverso-cnbital nervure the appearance of being 

 broken. 



Male smaller, G^'""' long; third joint of antennae furcate, with a comb of hairs; 

 wings hyaline, with a slightly smoky tinge; anterior portion of thorax dorsally 

 black. The marginal cell usually jiresents a stump of a vein near its apex, springing 

 from the marginal nervure. 



Mature Larva about 14'"'" long and 4 broad; head smooth, shiny, yellowish-pink; 

 thorac ic legs, black with a pale ring ; body yellowish-pink, last segment dorsall j- black. 

 Each segment has many black tubercles, which mostly are j)ellucid-dotted in the 

 center, bearing a curious resemblance to the scales of Aspidiotus Jiciis. These tuber- 

 cles are arranged in three transverse series on each segment. Those of the hindmost 

 series are small, except for a couple of large ones on each side. 



The series may be expressed thus: L= large, S= small, tubercle. 



Anterior series : S L 



Middle series : L L L S L 



Hind series : L L S S S S S 



L S 

 LSLLL 



S S S S S L L 



The middle (dorsal) tubercles of the anterior series are further apart than those 

 of the middle series, so that the four form a figure thus •. .• The cast skins are 

 whitish, with black tubercles and chestnut- colored heads; the pink color of the 

 larva} being entirely due to the blood. It might be worth while to inquire whether 

 the pink pigment in the larva? is not related to the pigment which gives the Splioc- 

 ralcea flowers their scarlet color. 



The young larvie are pale greenish, with the ends yellowish; the red color is only 

 gradually acquired as they mature. 



The cocoon is pale brown, moderately dense. 



