1916] Classification of the Saturniidce 147" 



width, in the male they reach to tips of second pair and length 

 is three and one-half times width; glazed eye-pieces visible; 

 labrum variable, generally elevated, pentagonal or shield 

 shaped ; maxillae with mesal length and breadth at cephalic end 

 approximately equal; margin of second wing slightly sinuate, 

 produced below anal of front wing to caudal margin of fourth 

 abdominal segment and more than half way across caudal 

 margin of first wing; first and second abdominal spiracles par- 

 tially covered by the wings; spiracular openings located at the 

 bottom of lenticular depressions, margins of the openings- 

 felted; tip of abdomen rounded with ten or more short, rigid 

 spines less than one millimeter long, forming a circular group. 

 Length, abdomen retracted, 25-30 mm., expanded 35-40 mm. ;- 

 girth about 50 mm. 



Genus Rothschildia Grote. 

 Exposed surface of thorax and abdomen sparsely covered 

 with fine set£e; face-parts slightly elevated; antenna pectinate 

 throughout, tapering gradually to a point at the distal end, 

 length and width varying with the sexes and reaching more than 

 half way between the tips of first and second pairs of legs; 

 antennse of male elevated, with a depression on each side the 

 stem of the flagellum; antennae of female with the stem of the 

 flagellum raised above the level of the pectinations; invagina- 

 tions for the anterior arms of the tentorium indistinct; eye- 

 pieces both visible; clypeo-labral suture generally distinct; 

 maxillae, measured on meson, about one-fifth the length of 

 wings, triangular in outline, its mesal length greater than the 

 width at proximal end; tarsi of the first pair and tips of the 

 second pair of legs adjacent on the meson ; metanotum wrinkled 

 at base of wings but not always depressed; wings with their- 

 distal margins raised above the dorsal surface; first wing with 

 its angle on cephalic margin of fourth abdominal segment; 

 second wing visible along dorsal margin of first wing, its margin 

 entire and produced below the anal angle of first wing to the 

 caudal margin of the fourth abdominal segment, extending 

 more than half way across margin of first wing; spiracular line 

 curves ventrad; cremaster wanting; abdominal segments 8-10- 

 bluntly cone-shaped, the caudal end with a band of coarse setae 

 about one millimeter long, either erect or closely appressed to> 

 the body. 



