l84 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 12$ 



blunt, outer basal triangle sharply pointed and well sclerotized, and 

 the inner angle with a hollow, conical well-sclerotized spur. Oviposi- 

 tor (pi. 31, fig. 176) triangular in shape, the length 1.7 times the base. 



Pupa (pi. 37, fig. 295, and pi. 39, fig. 335).— Entire dorsum of 

 thorax with granulosity ; 4 simple trichomes on each side of midline 

 of thorax. Dorsal surface of abdominal segments : Segments i and 2 

 with granulosity on at least part of dorsum ; segment 2 with 6 an- 

 teriorly directed simple spines in a transverse row across its middle, 

 the row being divided in two by a median space ; segments 3 and 4 

 with transverse rows somewhat before the posterior margin, each 

 composed of 8 spines divided by a median space. Ventral surface of 

 abdominal segments : Fifth segment with 4 anteriorly directed spines 

 in transverse row 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 each side of 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. 295) of each side arising slightly 

 behind the anterior margin of thorax in the region of the humeral 

 angles ; composed of 8 filaments which branch into groups as follows : 

 2-2-1-1-1-1 ; the last (most basal) single filament is somewhat re- 

 moved from all the others which emerge a distance above it. Maxi- 

 mum length of filaments, 3.1 mm., about 0.46 times the length of the 

 cocoon ; average diameter, 44 {x ; filaments with poorly marked super- 

 ficial segmentation, covered with microscopic spicules. 



Cocoon (pi. 39, fig. 335): Length of base, 4.5 mm.; greatest 

 length, 6.7 mm. ; greatest width, 2.5 mm. ; greatest height, 2.6 mm. 

 Cocoon slipper-shaped, with distinct collar and fine parchmentlike 

 texture, threads not visible ; ribbonlike festoons extending from the 

 rim of the dorsal aperture ; bases of uppermost two festoons on either 

 side not contiguous to each other ; dorsal margin of festoons not form- 

 ing straight line. Cocoon covering abdomen and three-fourths of 

 thorax. 



Larva (pi. 40, fig. 373, and pi. 42, fig. 410). — Total length, 10.4 

 mm. Length of head capsule equal to width. Thorax 1.6 times width 

 of head. Abdominal segments 1-4 almost equal to width of thorax; 

 segments 5-7, 1.3 times width of segments 1-4; there seems to be a 

 gradual widening of the abdomen from the front to rear ; in profile, 

 the larva is straight on its dorsal surface, its ventral surface sloping 

 downward until the seventh segment, where it turns abruptly upward 

 toward the posterior sucker. General color greenish gray, with no 

 dark patches on ventrolateral regions of abdominal segments 6-7. 



