346 
Psyche 
[September-December 
branched; cross veins between M3+4 and CUA forming an irregu- 
lar, double row of cells; 2 A looped to 1A distally. 
Holotype: no. 5840, Museum of Comparative Zoology. This 
specimen consists of a well preserved fore wing, complete except 
for small parts of the fore margin and the very apex. 
Until a more nearly complete specimen is found, showing at 
least the hind wing, the affinities of this family will probably re- 
main uncertain. In general, it seems protorthopterous, though the 
basal fusion of M with CU and CUA, the very heavy longitudinal 
veins, weak cross veins, and rugose membrane set it apart from 
all other families of Protorthoptera known to me. 
Family Heteroptilidae, new family 
Insects of moderate size. Fore wing: membranous; costal mar- 
gin strongly convex; costal area very broad, broadest near mid- 
wing, with many straight, oblique and unbranched cross veins; 
subcostal area broad, with straight cross veins; R curved away 
from the costal margin; R1 strong, directed anteriorly and termi- 
nating on costal margin well before wing apex; RS arising before 
mid-wing, with several branches; M independent of R basally, 
forking beyond origin of RS; CU forked near base; CUA mostly 
straight; CUP very straight, extending to about half the wing 
length; 3 straight anal veins. Cross veins generally weakly devel- 
oped and not numerous, except in costal area. Hind wing and 
body unknown. 
Figure 8. Heteroptilon costale, n.sp.; drawing of fore wing, based on holotype, 
no. 5878, M.C.Z. Length of wing, 15 mm. 
