238 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



9 with a single simple spine on either side of midline at anterior mar- 

 gin, with separation between them, and with combs over entire dor- 

 sum. Ventral surface of abdominal segments : No granulosity ; all 

 spines are anteriorly directed and all transverse rows are situated 

 somewhat before the posterior margin of the particular segment ; seg- 

 ment 4 with 6 simple spines in transverse row with median separation ; 

 segment 5 with 4 bifid spines in transverse row with median separa- 

 tion ; segments 6 and 7 each with 2 bifid spines, one on either side of 

 midline, with space between them. Terminal spines very small. 



Respiratory apparatus (pi. 37, fig, 307) of each side arising slightly 

 behind the anterior margin of thorax ; composed of 3 broad, curved, 

 cylindrical processes, each tapering to a point at its apex ; processes 

 with wrinkles and some minute spicules, but without superficial seg- 

 mentation. Maximum length of apparatus (anterior and posterior 

 processes combined), 4.8-5.2 mm. ; maximum diameter, 600 /*. 



Cocoon (pi. 39, fig. 347) : Length of base, 4.5 mm. ; maximum 

 width, 2.3 mm.; maximum height, 1.9 mm. Cocoon of wall-pocket 

 type, without collar ; texture of case parchmentlike, the threads visible ; 

 in profile, the rim of the anterior aperture slopes posteriorly at strong 

 angle ; rim somewhat thickened ; longitudinal keel-like structure pass- 

 ing down middle of dorsum from anterior aperture to posterior end. 

 Cocoon covering abdomen and posterior half of thorax ; attached along 

 posterior three-fourths of its base. 



Larva (pi. 41, fig. 385, and pi. 43, fig. 422). — Total length, 7.2- 



7.5 mm. Length of head capsule I.i times its width. Width of thorax 



1.6 times that of head. First 4 abdominal segments 1.2 times width 

 of head ; segments 5-7 expanded, greatest at segment 6 which is i .6 

 times width of segments 1-4; body with same general shape and 

 profile as metallicum. General color tan to gray, the dorsum of thorax 

 more grayish white, the ventral surface of abdominal segments 5-7 

 more tan; large black granular patches on ventrolateral regions of 

 segments 6 and 7. 



Head: Designs on frons-clypeus and epicranial plates shown on 

 plate 41, figure 385. Each cephalic fan with 22-31 pectinate branches, 

 the hairs on these branches simple, rather long, heavy, and well sepa- 

 rated, not interspersed with hairs of other types. Mandible with 2 

 teeth on its inner margin, the basal tooth appearing to arise from the 

 distal one which is much larger ; both teeth sharply pointed. Antenna 

 330 fx long, 4-segmented, just passing the basal stalk of cephalic fan ; 

 segment i dark brown, the others yellow-brown ; segments 1-3 sub- 

 equal in length, without pseudoarticulations ; segments i and 2 with 

 transverse striations. Submentum with 9 triangular-shaped apical 



