1916] Classification of the Satiirniidce 139 



width, tapering to a point at the distal end, the tips meeting on 

 the meson over the tips of the first pair of legs ; labrum variable, 

 the width a little greater than the length, usually five or six 

 sided, slightly tuberculate, and broadly rounded or shghtly 

 bilobed at the distal end; maxillae triangular in outline or 

 somewhat heart-shaped, the median length slightly less than 

 the greatest width; spiracles free. Length, abdomen retracted, 

 30-32 mm., expanded, 33-35 mm., girth, 38-45 mm. 



Genus Telea Hiibner. 



Body blunt at cephalic end; abdominal segments 1 to 4 

 rounded out above the margin of the body dorsad and forming 

 a distinct hump, segments 5 to 7 distinctly decreasing in size and 

 caudal margin of segment seven joining cephalic margin of 

 segment eight with only a slight indentation between; antennae 

 pectinate throughout, varying greatly with the sexes, the stem 

 of the flagellum in both always less than one-third the total 

 width; eye-pieces not visible; invaginations for the anterior 

 arms of the tentorium distinct; clypeo-labral suture distinct; 

 maxillae, measured on meson, about one-fourth length of 

 wings; legs in the male covered by antennae, in the female 

 tarsi of first pair and tips of second pair adjacent on the meson; 

 median thoracic line carinate on all segments; mesothorax 

 with a prominent tubercle at base of wings;* caudal part 

 of mesonotum and metanotum depressed adjacent to the 

 wings; wings with their distal margin raised above the dorsal 

 surface of body ; dorsal cephalic margins of abdominal segments 

 5 to 7 form a heavy raised line extending laterad and cephalad 

 of the spiracles to the proleg scars on the ventral surface ; 

 abdominal segments 7 to 10 tapering rapidly, forming an oblique 

 convex cone-shaped piece; tip of abdomen with a small oval 

 area set with fifteen or more stout, black, slightly curved 



*Mesothoracic tubercles are found in the pupae of many genera, but are 

 especially prominent in the case of Tropaea luna and Telea polyphemus (Fig. 11, 

 w. t.), where at the proximal ends of the wings they differed so much in shape and 

 size from any others noticed in the study of pupae, that they were investigated 

 and each found to contain a prominent spine. This spine is used to cut the cocoon 

 to allow the imago to escape and was found in the imagos of all genera of Satur- 

 niidse studied, but especially well developed in the genera previously mentioned. 

 A study of the preimago showed that this spine was an outgrowth from one of the 

 wing sclerites, the third axillary of Snodgrass. In Telea polyphemus (Fig. 12), 

 there is also a smaller spine cephalad of the large one. 



