September, 1942 
gives but slight indication of the manner 
in which the anal cerci bend inward near 
their bases, and, without mention of this 
unusual character in the text, its signifi- 
cance Is lost. 
Peltoperla zipha new species 
MAte.—Body, legs and cerci pale yel- 
lowish brown, with dorsum of head and 
thorax darker brown; with basal segments 
of antennae concolorous with head and 
with apical segments darker. Compound 
eyes and ocelli black and contrasting with 
head. 
Head through compound eyes not so 
wide as anterior margin of pronotum, with 
posterior margin of compound eyes touch- 
ing anterior margin of prothorax. Two 
lateral ocelli present, anterior or median 
ocellus lacking or not visible; lateral ocelli 
RIGHT WINGS 
We 
Aisi iv) hh Mee Edy. y' 
Yt UH (ty / 
aN yoeoe ee 
Kick \ 
iit Rae Dat 
ah 
zy l 
CO ABDOMINAL TERGITES 
7 G ABDOMINAL SEGMENTS 
Fig. 6.—Peltoperla zipha. 
Frison: NorrH AMERICAN PLECOPTERA 
247 
about twice as far apart as each is distant 
from adjacent compound eye. 
Pronotum much wider than long, an- 
terior corners angular and posterior cor- 
ners much rounded, raised rugosities on 
posterior two-thirds of area. Legs with 
third tarsal segments much longer than 
second and first tarsal segments combined, 
the first segment slightly longer than the 
second. 
Dorsum of abdomen without special 
structures through ninth tergite; tenth 
tergite with anterior part forming a 
strongly sclerotized upraised ridge at- 
tached to a cleft, more membranous area 
from which the long, slender, pointed 
supra-anal process arises, figs Oe two 
minute membranous lobes are adjacent to 
place where supra-anal process projects; 
ninth abdominal sternite with a broad, 
slightly elevated, weakly developed lobe 
in middle. Cerci straight, with about 14 
segments. 
Wings extending far beyond tipeoteab= 
domen and with venation as illustrated in 
fig. 6. 
The gill remnants are difficult to locate 
but there appear to be one on each side 
of the mesosternum and metasternum near 
point of articulation with leg and certainly 
one or more on each side near upper point 
of attachment of each mesothoracic and 
metathoracic leg. False gills are evident, 
one on each side, on the mesonotum and 
on the metanotum. 
Length to tip of wings 12 mm.; length 
to tip of abdomen 8 mm. 
Holotype, male.—Tributary of Little River, 
Elkmont, Tenn.: May 14, 1939, T. H. Frison 
& H. H. Ross. 
This new species is quite different from 
any described species and is easily separated 
from arcuata Needham (Smith 1917) be- 
cause it lacks the small lobe at base of the 
ninth abdominal sternite and has straight 
anal cerci. It differs markedly from the 
male of cornelia Needham & Smith and 
related forms in the shape of its supra- 
anal process. 
TAENIOPTERYGIDAE 
The generic classification of the Taeni- 
opterygidae presents several problems 
which are impossible to elucidate thor- 
oughly or unravel at this time. Studies 
of the North American species, adults and 
