1926 ] 
Hymenopterous Family Rhopavosomatidce 
19 
antefurcal nervulus is a very unusual character (shown clearly 
in Morley’s figure also) and the absence of the strigil on the hind 
legs of the male is peculiar to the Indian form. The abdomen is 
described as subsessile with the first segment only twice (cf) 
or three times $ ; as long as broad at apex, a condition quite 
different from that in the American or African forms. In the 
latter character, however, the description and figure do not agree, 
but as the petiole is very carefully described, it seems probable 
that the figure is somewhat out of proportion. Morley overlooked 
Paniscomima and hence makes no comparison between it and 
his own species. These two are more closely similar in possessing 
simple claws, but the form of the abdomen, strigil and venation 
serve easily to distinguish them. 
As stated elsewhere (Psyche, vol. 29, p. 107, 1922) I am 
unable to agree with Turner and Waterston who have placed 
Olixon Cameron in the Rhopalosomatidse. 
Key to the Genera of Rhopalosomatidce. 
1. Abdomen subsessile, the first segment two or three times as 
long as broad at apex; tarsal claws of female simple, not 
toothed beneath; spurs of hind tibiae of male of equal 
length, their tarsi without strigil; nervulus strongly ante- 
furcal. Type: Rhopalosoma abnorme Cameron 
Hymenochimcera gen. nov. 
Abdomen petiolate, the first segment four to six times as 
long as broad at apex; inner spur of hind tibiae of female 
much longer than the outer, their tarsi with a well de- 
veloped strigil ; nervulus strongly postfurcal 2 . 
2. Nervulus oblique, nearer to the basal vein than to the upper 
angle of the second discoidal cell ; radial cell in hind wing 
truncate at base, the first section of the radiu sperpendicular 
to the costa Paniscomima Enderlein 
Nervulus not nearer to the basal vein than to the upper 
angle of the second discoidal cell; radial cell in hind wing 
obliquely rounded at base, the first section of the radius 
curved below toward the apex of the- wing 
Rhopalosoma Cresson 
