48 
IOWA ACADEMY OF SCIENCES. 
in hand, but his references of ichthyocephala Sign, to this 
form seems doubtful. 
Homalodisca liturata n. sp. Plate II, Fig. 2. 
Smaller, narrower than triquetra with a longer head. 
Straw yellow, five irregular brown lines on the head. 
Length, 11mm; width, 2.25mm. 
Vertex one-fifth longer than its basal width, half longer than 
the pronotum, disc flat, very deeply grooved in the middle. Front 
very long and narrow, disc flat and in same plane as the clypeus. 
Pronotum short, disc flat, posterior margin more strongly curved 
than the anterior one. Elytra very narrow, nervures distinct, a 
single cross nervure between the sectors situated at over one-third 
the distance from the fork of the first sector to the base. 
Color; vertex pale yellow with five brown lines as follows: a 
narrow median one expanded on the apex, an interrupted line on 
either side the middle, arising considerably back of the apex and 
usually somewhat reticulate anteriorly, a pair of heavier stripes 
arising either side the apex and running back to the ocelli, their 
basal portions forming part of the loop that runs from the ocelli 
around to the eye, the striations of the reflexed part of the front 
brown. Pronotum yellow, irregularly punctured with brown; 
usually four distinct dark spots on the anterior submargin. Scutel- 
lum yellow with large brown spots sometimes arranged in the form 
of an H. Elytra hyaline, the nervures red, an irregular opaque red 
patch on the costal half back of the middle, terminating just 
before the apical cells and omitting an oval hyalin spot in the 
anterior end of the anteapical cells. Face and legs yellow, a spot 
on apex of front and anterior tibiae, fuscous. Abdomen black 
above, the terminal segment yellow, the lateral margins broadly 
white, at the base, narrowing apically, the spiracles dark. Below 
pale, sometimes a median line and the margins of the female seg- 
ment black. 
Genitalia; female segment half longer than the penultimate, the 
lateral margins parallel, the posterior margin in two slightly 
rounding divergent lobes, the notch between them narrow and less 
than half the depth of that in triquetra. 
Specimens are at hand from Phoenix, Ariz; Yuma, Cal- 
ifornia, and Comondu Lower, Calif, Mexico. The larger 
head and much narrower form together with the lineate 
arrangement of the markings will readily separate this 
form from triquetra. 
