416 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



Head conspicuously granulate; eyes small. Interantennal spine 

 almost straight. 



Thoracic segments conspicuously granulate; lengths of segments: 

 3.5. 2.9, 1.4 mm. Armature of forefemur with inner row consisting 

 of short setae arising from small warts. Claws of foretarsi two, the 

 inner very short, closely appressed to base of outer. First spine of 

 forefemur at slightly over three times its length from tip of trochanter. 

 Basal half of forefemur gradually thickened to first spine. 



Abdomen without bulbous swelling, parallel sided. The lateral 

 margins of terga shallowly concave. Sixth tergum three-fourths as 

 long as fifth, narrower at midlength than fifth; this constriction makes 

 the abdomen narrower at base of second segment and at middle of 

 sixth. Sterna easily seen from above on each side of terga. Seventh 

 tergum abruptly narrowed after basal fifth, thence parallel sided to 

 broadly rounded apex, subequal in length to fifth. Hind margins of 

 second to sixth sterna straight. Hind margin of seventh and eighth 

 sterna shallowly concave medianly. Seventh sternum shorter than 

 sixth and longer than eighth, swollen before hind margin on either 

 side of median line (fig. 13). Eighth sternum visible on its entire 

 width. Spiracle short. Hypopygium at right angle to rest of ab- 

 domen; with a quadrate projection on the outside of the upper margin, 

 this projection reaching to about midlength of margin; basal half of 

 margin raised and reaching to upper margin of clasper: clasper fitting 

 between these two raised structures. Apical process of hypopygium 

 developed into a long, broad at base, tapering point, most of it hidden 

 by the broad claspers. Claspers large, rectangular in lateral aspect, 

 upper margin shallowly concave about middle, apical half bent mesad; 

 on inner surface near upper margin with a lanceolate appendix parallel 

 to and pointing to the base of the clasper (figs. 14, 40). 



Length 20.0 mm. to apex of seventh sternum; 0.3 mm. from the 

 latter to apex of hypopygium. 



The vertical position of the hypop}'gium in this species is most 

 striking and unique. On account of its unusual position the hypopyg- 

 ium, its apical process, and the caudal end of the claspers can be seen 

 from a dorsal view of the insect. The shape of the hypopygial struc- 

 tures and specially the appendix of the clasper suffice to separate this 

 species. 



Figures 86-99. — 86, Ghiliar.ella varicornis, female, apical margin of sixth and seventh 

 sterna. 87, G. globijera, female, dorsal view of last abdominal segments. 88, G. haitiana, 

 same. 89, G. spinicaudata, same. 90, G. monetise, same. 91, G. nanna, same. 92, 

 G. panamana, same. 93, G. obesa, same. 94, G. calymmata, same. 95, G. annectens, 

 same, lateral view. 96, G. gladiator, same, dorsal view. 97, G. bethei, same. 98, G. 

 globulaia, same. 99, G. approximate, same. 



