MICHIGAN ACADEMY OF SCIENCE. 
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23. GeuthopJiilus latens Scudder. — The front femora, in this species, 
have from one to three spines; the middle femora, four or five; and in 
the male the hind ones have, on the outer carina three to five very large 
conspicuous spines interspersed among smaller ones; the inner carina 
of the male and both carinae of the female have 10-15 small, nearly equal 
spines. 
Color: — In general, light yellowish brown; on each side of the back 
is a fuscous band, bordered by yellowish brown ; on the abdomen, and 
sometimes on the meso- and meta-notum this band is dotted with yellow. 
Legs yellow; small dark spots, usually arranged in rows, on the hind 
femora. Knees fuscous. 
Measurements : — Length of body, 20 mm. ; pronotum, 5.5 mm. ; front 
femora, 8 mm. ; hind femora, 17 mm. ; antennae, 52 mm. ; ovipositor, 11 
mm. ; cerci, 5 mm. 
. Genus Scudderia Stal. 
This is the only one of the four or more genera of katydids, which was 
found at the station. It can be distinguished from the other genera by 
the very narrow, almost acuminate vertex, and by the peculiar spine 
curving downward from the supra-anal plate of the male, to touch a 
similar spine curving upward from the sub-anal plate. The ovipositor 
is a short, broad, upward curving blade, finely toothed near the end. 
The hind femora have a few very small spines on the lower outer carina, 
while the other femora are unarmed. The hind legs are very long and 
slender, reaching nearly to the tip of the wing-covers. 
24. Scudderia pistillata Brunner. — The general color is bright green, 
with round black eyes and fuscous feet. The tegmina are of nearly 
equal width throughout, diagonally truncate at the tip. The character- 
istic mark is the shape of the supra-anal spine in the male, which has an 
acute notch at the tip; on each side of the notch, the lobes taper to a 
rounded point, instead of being truncate, as in another species, not found 
here. 
Measurements: — Length of body, 20 mm.; of tegmina, 34 mm.; of 
hind femora, 21 mm.; of antennae, 32 mm.; greatest width of tegmina, 
9 mm. ; of anterior margin of pronotum, 2.5 mm. ; of posterior margin, 
4 mm. 
25. Scudderia furcata Brunner.— The specimens found were green, 
excepting for the red hind tibiae. The supra-anal spine in the male, has 
a round notch at the tip. The pronotum is of nearly equal width 
throughout, the tegmina rather narrow. 
Measurements : — Length of body, 20 mm. ; of tegmina, 30 mm. ; of hind 
femora, 23 mm.; width of tegmina, G.5 mm.; of front margin of prono- 
tum, 2.5 mm.; of hind margin, 3.5 mm. 
Genus Xiphidium Serville. 
“This genus includes our smallest winged Locustidae. The vertex pro- 
jects forward and slightly upward in the form of a rounded tubercle 
which is hollowed out on the sides for the reception of the basal joint 
of the antennae. * * * Spines of prosternum very short and weak; 
often mere cone-shaped protuberances. Wing covers narrow, straight, 
rounded at the end, often varying much in length for the same species. 
