STEIROXYS HENDERSONI, A NEW KATYDID FROM 
UTAH. 
By A. N. Cavpe.1, 
Custodian of Orthoptera, United States National Museum. 
Description, male and female——General size and appearance much 
as in S. pallidipalpus. Head and pronotum scarcely exhibiting dif- 
ferentiating characters, the lateral carina of the latter varying from 
almost straight to slightly incurved at the anterior fourth and the 
disk always noticeably, though very moderately, broader posteriorly. 
Organs of flight essentially as in previously described forms. Legs 
long and not noticeably differing from 
those of other species. Cerci of the male 
very different from those of any described 
species of the genus; the main body is sub- 
cylindrical, gently flattened basally and, 
slightly more so apically, especially on the 
inner side; a sharp, slender, chitinized 
spine, straight and directed caudad and 
inwardly, arises on the outer apical mar- 
gin of the cercus, situated on a terminal OD ripen ie senate to. 
hump; the dorsal half of the inner apical ~~ tarmran view. 
terminus of the cercus is prolonged into 
a slender strongly incurved and apically gently upcurved process, 
gradually narrowing to an acute chitinized point, the whole almost 
as long as the main body of the cercus; the general appearance, from 
a dorso-lateral view, is shown by the present sketch and illustrates 
it better than a description can do. Ovipositor gently curved up- 
wards, scarcely differing from those of other described species of 
this genus. 
Color varying from greenish to brown, mostly yellowish-brown in 
dried material; the lateral lobes of the pronotum are unicolorous or 
somewhat darkened, and the caudal margin is often more or less 
strongly marked with yellowish-white. 
Measurements.—Lexgth, pronotum, male, 6.9 mm., female, 7 mm. ; 
posterior femora, male, 21 mm., female, 22 mm.; ovipositor, 18 mm. ; 
width, pronotal disk posteriorly, male, 4 mm., female, 4 mm.; pos- 
terior femora at widest point, male, 3.75 mm., females, 4 mm. 
No. 2468—PROCEEDINGS U. S. NATIONAL Museum, VOL. 62, ART. 22 
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