198 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



of cercus. Genital rod (pi. 31, fig. 185) with triangular-shaped basal 

 dilatation that is poorly sclerotized ; apical expansions of arms of 

 genital fork triangular in shape, all the angles being well sclerotized ; 

 inner basal angle with hollow, cone-shaped structure extending from 

 it; membrane along outer margin near apex. Ovipositor (pi. 31, 

 fig. 186) almost triangular in shape, longer than wide, the apex blunt. 



Pupa (pi. 37, fig. 298, and pi. 39, fig. 338). — Granulosity on entire 

 thorax ; 3 simple trichomes on either side of midline of thorax. Dorsal 

 surface of abdominal segments: Segment i with granulosity along 

 posterior margin and segment 2 having it along the anterior margin ; 

 segment 2 with 6 anteriorly directed spines in transverse row some- 

 what before posterior margin, the row being divided in two by a 

 median space; segments 3 and 4 with transverse rows of 8 spines, 

 situated as on segment 2, each row also being separated in two by a 

 median space. Ventral surface of abdominal segments : Without 

 granulosity ; segment 5 with 4 anteriorly directed simple spines in 

 transverse row, situated a little before the posterior margin, the spines 

 being divided into two equal groups by a median space; segments 6 

 and 7 with similar rows of spines, but the two spines on either side 

 of the median space are more separated than on segment 5, so that 

 the distance between them is approximately equal to that of the median 

 space. Terminal spines absent. 



Respiratory apparatus (pi. 37, fig. 298) of each side arising just 

 posterior to anterior margin of thorax ; composed of 8 filaments which 

 branch into two main trunks from a rather long, narrow basal stalk, 

 each trunk subdividing into four filaments which emerge at different 

 levels; the formula of branching is: 4-4. Maximum length of fila- 

 ments, 2.7 mm., about 0.4 times the length of the cocoon; average 

 diameter, 52 fi; filaments with undulations along their surface and 

 with microscopic spicules. 



Cocoon (pi. 39, fig. 338) : Length of base, 4.5 mm. ; maximum 

 length, 6.7 mm. ; maximum width, 2.6 mm. ; height with festoons, 

 2.6 mm.; height of case without festoons, 2.1 mm. Cocoon sHpper- 

 shaped, with distinct collar and fine parchmentlike texture, threads 

 not visible ; ribbonlike festoons extending from rim of dorsal aperture, 

 usually 6 on either side, the posterior five being connected dorsally 

 by transverse band ; dorsal margin of festoons forming straight line, 

 parallel to base of cocoon ; rim around anterior aperture not thickened. 

 Cocoon covering abdomen and half of thorax. 



Larva (pi. 41, fig. 376, and pi. 42, fig. 413). — Total length, 9.6- 

 9.9 mm. Length of head capsule 1.2 times the width. Thorax and 

 first 4 abdominal segments about equal in width, 1.4 times the width 



