2l6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I25 



196) shaped very much like the cercus in reverse, except that its 

 dorsal extremity is somewhat tapered ; not quite twice as high as cer- 

 cus. Genital rod (pi. 32, fig. 198) with basal dilatation confined to 

 small region only ; apical arms of genital fork not expanded, branch 

 like the arms of a Y, each appearing like a twisted ribbon. Ovipositor 

 (pi. 32, fig. 197) somewhat triangular in shape, the apex well rounded, 

 small, the base equal to twice the height. 



Pupa (pi. 37, fig. 302, and pi. 39, fig. 342). — Granulosity well 

 marked on midregion of thorax ; 3 to 4 trifid trichomes on either side 

 of midline. Dorsal surface of abdominal segments : No granulosity ; 

 spines on segments 2-4 are anteriorly directed, those on segments 7-9 

 are posteriorly directed ; segment 2 with transverse row of 8 simple 

 spines, situated three-fourths the distance from the anterior margin, 

 with median separation ; anterior to the outermost spine on each ex- 

 tremity are 2 similar spines ; segments 3 and 4 each with 8 simple 

 spines in transverse row three-fourths the distance from the anterior 

 margin, the row divided in two by a median space; segment 7 with 

 8-10 simple spines in transverse row just beyond the anterior margin, 

 the row not interrupted by a median space, and with comblike groups 

 of minute spines lateral to both ends of the row ; segment 8 with 12-14 

 simple spines in uninterrupted row just beyond the anterior margin, 

 also with combs lateral to both ends ; segment 9 with 8 simple spines 

 in an uninterrupted row across anterior margin, without combs. Ven- 

 tral surface of abdominal segments : No granulosity ; segment 4 with 

 a single spine on either side of midline, about three-fourths the dis- 

 tance from the anterior margin, with median separation ; segment 5 

 with 4 spines in transverse row before the posterior margin, with 

 median space, the outer two spines bifid, the inner spines trifid ; seg- 

 ments 6 and 7 each with 4 spines in transverse row before the posterior 

 margin, the outer spines simple, the inner ones bifid ; the two spines 

 on either side of midline of segments 6 and 7 farther apart than those 

 on segment 5, the distance between them about equal to that of median 

 space. Terminal spines very small, blunt, with apical indentation. 



Respiratory apparatus (pi. 37, fig. 302) of each side arising slightly 

 behind the anterior margin of the thorax; composed of 6 filaments 

 which branch as follows : 2-2-2 : two groups of two filaments branch 

 at the same level, the third slightly lower ; filaments without superficial 

 annulation but with microscopic spicules. Maximum length, 5.0 mm., 

 about 1 .4 times the length of the cocoon ; average diameter, 32 //,. 



Cocoon (pi. 39, fig. 342): Length of base, 3.5 mm.; maximum 

 width, 1.4 mm.; maximum height, 1.9 mm. Cocoon of wall-pocket 

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



