INSECTA. 169 



stripe on the side ; on the third segment of the abdomen 

 are two beautiful eye-shaped spots of cerulean blue ; 

 feeds on the leaves of the rose bay, from the particles of 

 Avhich it also constructs its cocoon. The pupa is at first 

 sulphur-colored, afterwards brown, and, after an en- 

 tombing for the space, of four weeks, comes forth in Octo- 

 ber, ready for flight. 



Privet Hawk Moth (sphinx lagustri), upper wings 

 and thorax brown-gray ; lower wings and abdomen red, 

 with lines of dark brown. Caterpillar, three inches 

 long, is green, with oblique bands of red and white ; 

 spotted yellow over the air vessel ; lives on the privet, 

 ash, Jericho rose, or alder ; passes into the earth in Sep- 

 tember, and undergoes its transition in a small cavity 

 spun over with a few threads ; the chrysalis is dark red- 

 dish-brown, and begins its new existence in the next 

 summer. 



The Unicorn Hawk Moth (sphinx convolvuli) is very 

 large ; brown-gray, marked with blackish lines ; has 

 transverse stripes of rose-red on the body. The pro- 

 boscis is very large. These insects remain concealed in 

 the daytime, but, coming forth at night, fly noisily 

 around. The large Brown or green caterpillar is naked, 

 and found in cornfields ; lives on the leaves of the bird- 

 weed. Keeps concealed in the earth during the day, and 

 when ready for the nympha state, bury themselves deeper. 

 The pupa, glossy and bright brown, is transformed into 

 the imago in four weeks, but frequently not until the 

 next spring. 



The Deaths Head (sphinx atrophos), plate 23, fig. 

 13, is the largest and handsomest of the sphinxes ; the 

 fore wings are gray, marked with darker lines, and rust- 

 colored spots ; the posterior wing? are of russet hue, with 

 8 



