1949] 
Cheng — Mecoptera 
145 
aedeagus with long apical processes and long lateral proc- 
esses, the former with rather straight inner margins and 
double sinuous outer margins. 
$ unknown. 
Holotype (rf) : Wakiakeng, 50 miles west of Tachienlu, 
Sikang ; Sept. 9, 1939 ; F. Y. Cheng, Io Chou and Tein Ho 
Hei ; in my own collection. 
This species belongs to the davidi group, and resembles 
that species superficially, but differs in the broader genital 
bulb and especially in the well-developed distal part of 
the parameres and in the shape of the aedeagus. 
Panorpa sexspinosa n. sp. 
Figures 4, 8, 9, 15, 16 
Vertex yellowish brown, with four dark spots on its 
anterior region, one small spot enclosing the median 
ocelli anteriorly, one around the other two ocelli posteri- 
orly, the other two are on both sides of the former two 
spots; rostrum uniformly yellowish brown; thorax 
blackish brown dorsally, light yellow laterally, meso- and 
meta-notum as a rule with broad median light yellowish 
streaks ; abdominal segments dark brown dorsally, light 
brown ventrally, hind part of 6th abdominal segment of 
male and its last few abdominal segments yellowish 
brown, the hind border of the third tergite with a hand- 
like prolongation. Fore wing : length, 12 mm. ; width, 3 
mm. ; membrane hyaline, markings darkish brown ; ptero- 
stigmal band complete, with a broad basal branch and a 
narrow apical branch ; basal band unusually broad ; apical 
band complete, with a hyaline spot ; basal spot very small ; 
pterostigma not very prominent. Hind wing: length, 10.8 
mm. ; width, 3 mm. ; similar to fore wing, except that the 
small basal spot is lacking. genitalia: genital bulb 
rounded; coxopodites long, with six spines on its distal 
inner margins; harpagones slender, the outer margin 
smoothly curved, the inner margin with a reduced median 
angle and a large basal concave area ; hypandrium incon- 
spicuous; hypovalvae rather short, not nearly reaching 
to the base of the harpagones; parameres narrow and 
