6o 
Psyche 
[March 
dition which occurs in many Orthoptera. Under low power magni- 
fication, this gives the impression that the costa is a much wider vein 
than it actually is. (See Plate 6). 
Since the figures and descriptions of Strephocladus subtilis Kliver 
which have previously been published are not satisfactory, I include 
here (Text-figure i) an original drawing of the type, which was 
placed at my disposal by Dr. G. Kneuper. The length of the pre- 
served part of the wing is 20 mm.; comparison with other Strepho- 
cladid wings indicates that the complete wing was about 30 mm. 
There are three distinctive features of the wing that separate Strepho- 
cladus from other genera now known in the family: the presence of 
short, oblique veins from Sc to the costal margin, the definite termina- 
tion of Sc on R 1 ; and the pectinate origin of the branches of CuA. As 
can be seen in the figure, the front branch of M is in brief contact 
with R; CuA is joined by a short cross vein to M. It should be 
noted that the stem of M is not convex, and that the vein designated 
CuA is entirely convex. The shallow furrow, directly posterior to 
CuP, can clearly be seen. 
The following are the strephocladids in the Elmo limestone: 
Genus Homocladus, new genus 
Fore wing: costai margin with a distinctly arched border at about 
the level of the origin of Rs; Sc with numerous long, branched vein- 
lets, directed longitudinally and terminating on costal margin; Rs 
arising at about one-third the wing-length from the base, giving rise 
to numerous, long branches, all simple except near the wing apex; 
M forked just before the origin of Rs, forming several long, simple 
branches ; fork of CuA at least slightly basal of the first fork of M ; 
CuP at its distal end extending parallel and close to the wing mar- 
gin, this marginal vein being continuous basally by extensions of the 
CuP \ CuA 
Text-figure 2. Homocladus grandis, n. sp. Drawing of fore wing (holo- 
type). 
