— lO— 



Antennae with a pencil of hair at tip. 



Tongue short and weak ; antennae of rj with a single row of lamellae beneath . . . 



Trochilium, 

 Tongue long and strong ; antennae of -3 ciliate beneath Sesia. 



The Sesiidce are contained in Hiibner's classification in his Phalanx 

 secunda, Trilnis srcunda. He divides them as follows : 



Stirps I, Sesiae. Primaries narrow and long, secondaries short 

 and broad, both with long fringes. 



Familia A, Corpulentae. Body ratiier stout and the wings are not 

 very small. 



Coitus 7, Sphccia. Collar yellow at the sides, primaries immaculate, 

 abdomen partly yellow. 



Familia B, Graciles. Abdomen rather slender, primaries very 

 narrow. 



Coitus I, Paranihrena. Primaries densely clothed with scales, ab- 

 domen irregularly banded with yellow. 



Coitus 2, Melittia. Primaries partly, secondaries entirely transparent, 

 feet with very bushy vestiture. 



• Coitus J, Bemliecia. Both wings transparent ; abdomen with a fan 

 like tuft. 



Coitus 4, Synanthcdoji. Primaries marked with red centrally and 

 reddish also along inner margin. 



Coitus 5, Coiiopia. Abdomen with bright red bands. 



Stirps 2, Apyralides. Wings rather broad and angulated or 

 dentate. 



Familia A, Vitratae. Primaries with transparent spot, abdomen 

 smooth. 



Coitus I, T/iyris. Wings with but a single row of transparent spots, 

 the abdomen white ringed. 



Coitus 2, Phostria. Primaries with two rows of somewhat opaque 

 spots, abdomen uniform. 



Walker still further subdivides the genera in the 8lh volume of the 

 Cat. Brit. Mus. Lep. Het., and finally Mr. Henry Edwards has created 

 a number of genera for our American species. 



As a rule our species are not very commonly found, and few col- 

 lections have the family very largely represented. As Mr. Hy. Edwards 

 is making a careful study of the family, looking to a monograph, I will 

 here give only brief descriptions of the genera, premising that they are 

 not based on any personal examination of the insects themselves, and 

 following in the order of genera that is adopted in Crete's List of 1882. 



