374 
Psyche 
[September-December 
Male genitalia: sternum IX long and pentagonal; median lobe 
short and inconspicuous; ventral vesicle large. Paraproct: median 
lamella long, thin, and extending backwards as far as the subanal 
plate; subanal plate terminating in two finger-like lobes, a shorter 
median lobe, and a larger lateral lobe; external appendage fused to 
lateral lobe of subanal plate and extending three quarters of its 
length. Tergum IX produced posteriorly into two asymmetrical lobes 
separated by a large median excavation ; each lobe bears a distal patch 
of spines. Tergum X normal. Epiproct short and stocky, remark- 
ably asymmetrical, and bearing a terminal whip-like appendage. 
Female: unknown. 
Holotype: cf, 27°56'N, 85°oo'E, ioioo ft, 23-29.V.1967 (CNC 
type no. 13493)- 
Diagnosis : another member of the P. filigera group, P. mastigo- 
phora is close to the species filigera (Kimmins 1946), parafiligera 
Aubert 1967 and metafiligera Aubert 1967. It can be best dis- 
tinguished from the others by the shape and the sclerotizations of 
its epiproct; these are not as well produced in P. filigera the species 
it resembles most; Kimmins’ (1946) drawing shows no detail of 
the inner structure of the epiproct, but a specimen in the United 
States National Museum (det. R. W. Baumann) does not possess 
the structures described here for mastigophora. 
Protonemura A 
Figure 18 
In general structure and coloration, this female agrees with P. 
funicula and P. adunca; it could be the female of either. 
Female genitalia: the subgenital plate is very slightly trilobed. 
Vaginal structures as in Figure 18. 
Material examined: ? , 27°56'N, 85°OO r E, 9900 ft, 23-29.V.1967 ; 
6$, 27°57'N, 84°59'E, ioioo ft, 19-31.V.1967 ; 5$, 27°58'N, 
moo ft, 8-24.VI.1967 ; 4?, 28°oo'N, 85°oo / E, 9900 ft, 
14.V.-22.VI.1967. 
Protonemura B 
Figure 19 
Total length 10 mm, to tips of wings, 13 mm. 
General coloration brown. Wings uniformly amber. Legs banded 
in the usual manner. 
