52 Mr. James Edwards’ Synopsis of 
lines on the apex of the crown. Pronotum little more than half 
as long as the crown, yellow, with three or five more or less 
distinct linear white stripes. Scutellum yellow. Elytra greyish 
yellow, as long or a little longer than the abdomen, subtruncate at 
the apex, their hind margin, the apical half of the costa, and some 
of the areas narrowly margined with fuscous or black; nerves 
white, but, with the exception of the dilated ones at the base and 
apex of the first subapical area, not conspicuously milk-white. 
Abdomen black, more or less widely yellow at the apex. Legs 
yellow, with black points and linear stripesand bands. 4}; genital 
valve short, triangular, one-half longer than the last ventral 
segment; plates reflexed, elongate-triangular, three times as long 
as the valve, outer margins sinuate, apices separately rounded; 
side lobes of the pygofer much shorter than the plates, and some- 
what shorter than the anal tube, in the middle of the lower 
margin a strong tooth. 9; last ventral segment twice as long as 
the preceding, with an angular notch on each side, middle lobe 
wide, subtrapeziform, side lobes triangular, shorter than the 
middle one. Length, 23—83 mm. 
With the exception, perhaps, of D. striatus, this is the 
commonest species of the genus with us. The notches 
in each side of the hind margin of the last ventral 
segment of the female are subject to much variation in 
degree, and in those examples where they are least 
developed the hind margin appears to bear two small 
triangular teeth, which are about equidistant from the 
sides and from each other. 
18. Deltocephalus Fallen, Fieb. 
Deltocephalus Falleni, Fieb., Syn. Eur. Delto., 10, 24, 
fig. 24: Ji. Sahl.,, Not...Fenns,,-xii83t5)" 11: 
Scott, Ent. Mo. Mag., xii., 271, 11. 
Searcely distinguishable from the preceding, except by the 
characters of the genitalia. ¢; genital plates reflexed, three 
times as long as the valve, sinuate on their outer margin, and 
obtusely rounded at the apex; side lobes of pygofer scarcely 
shorter than the anal tube, but somewhat shorter than the plates, 
a small incurved tooth at the apex, and a strong tooth in the 
middle of the lower margin. 9; last ventral segment nearly 
twice as long as the preceding, its hind margin feebly trisinuate, 
the intermediate sinus wider and not so deep as the lateral ones, 
the lateral angles somewhat obtuse. Length, 23—3 mm. 
