148 Psyche [December 
The general venational pattern is shown in figure 1, but this is 
subject to much individual variation. The subcosta terminates on the 
costal margin well before the end of Ri ; it does not extend to the apex 
of the wing as shown by Bolton in his drawing of a specimen in the 
British Museum. The number of main branches of Rs varies from 
5 to 6 in the several specimens showing those veins, but usually one of 
these branches has a short fork, which occurs most often on R2 or R3. 
The branching varies in the fore and hind wings (and presumably in 
the right and left wings) of individual insects. In the holotype speci- 
men (36-5 ) 2 , for example, this fork occurs on R3 in the fore wing but 
on R2 in the hind wing. MP is less variable; it forks broadly at about 
mid-wing. In only one specimen (C4) does either branch of MP 
clearly fork again (see figure 1), but in several one or both branches 
Figure 1. C aloncura danvsoni Brongn. Fore and hind wings based on the 
holotype and other specimens in the Museum National, Paris. Sc, subcosta 
( — ); Rl, radius ( + ); Rs, radial sector ( ); MPl + 2 and MP3 + 4, 
branches of posterior media (' ) ; 1A, 2A, 3A, 4A, anal veins. 
appear to have a small, terminal fork. CuA and CuP are consistently 
unbranched ; the divergence of CuP and 1 A, near the base of the wing, 
is either shallow or somewhat broader. 7 he four anal veins are con- 
sistently present. 
The most striking characteristics of the wings of dawsoni are the 
2 Since the Commentry insects in the Museum National are not numbered, 
I am using here the figure number on Brongniart’s plates for the number of 
the specimen. Hence, specimen 36-5 is the fossil illustrated on Brongniart’s 
plate 36, figure 5. 
