1916] Classification of the SaturniidcE 143 



This genus includes a single species in North America, 

 Agapema galbina, found in Arizona, Texas and Mexico. The 

 pale grayish tan cocoons consist of two layers, a very thin, 

 coarsely reticulated outer layer, and an inner thicker layer with 

 smaller reticulations, both layers having loose fibers at the 

 cephalic end closing an opening made by the thicker walls. 

 It is suspended by the side, as Samia cecropia. 



Agapema galbina Clemens. — Color generally tawny or 

 yellowish brown, with slightly darker transverse conjunctiva 

 and margins of spiracles; entire surface except wings and 

 antenna, covered with fine wavy impressed lines and coarse 

 punctures; wings and antennas with similar Hnes, but much 

 deeper impressions ; face parts elevated ; tips of antennae usually 

 lie adjacent on the meson for a distance nearly equal their 

 width, occasionally separated by the cases for the first pair of 

 legs; length two and one-half times width, stem of the flagellum 

 elevated above the level of the pectinations; labrum slightly 

 longer than broad, its distal end rounded or pointed; maxilla 

 with each half somewhat triangular in outHne, with lateral 

 margins concave, surface almost smooth; space between 

 maxillae and antennas filled in by part of the tibia and tarsus 

 of the first pair of legs ; mesothoracic spiracles triangular, meso- 

 thorax with lateral part of alar area elevated and a smooth, 

 rounded spot about two-thirds of the distance from the cephaHc 

 margin; first wing with its anal angle very broadly rounded on 

 cephalic margin of fourth abdominal segment; second wing 

 visible along entire dorsal margin of first wing, its margin 

 entire, produced around angle of first wing, but never reaching 

 half way across its caudal margin; first and second abdominal 

 spiracles often partially covered by the wings. Length, 

 abdomen contracted, from 15-25 mm.; girth, 25 mm. 



Genus Callosamia Packard. 

 Body cylindrical; face parts slightly elevated; antenna 

 pectinate throughout, tapering gradually to a point at the 

 •distal end, the stem of the flagellum raised above the level of the 

 pectinations and one-third the total width of the antenna; 

 invaginations for the anterior arms of the tentorium distinct; 

 clypeo-labral suture obsolete; maxillae, measured on the meson, 

 -always about one-sixth the length of the wings, triangular in 

 •outline ; tarsi of the first pair of legs and tips of the second pair 



