February, 1871.) 
Aa 
e 
O aes bes, 
Nae SP 
a. side view of genital segment of ¢ Cixius stigmaticus. 
b. the same, viewed from beneath. 
c. claspers of do. 
d. side view of genital segment of ¢ C. brachycranus. 
e. the same, viewed from beneath, 
f. claspers of do 
g- ms 3 C. intermedius. 
kh. 1 xy nervosus. 
a. ae vy stmplex. 
k Ba x» similis. 
193 
The more remote intervals of 
the granules, their difference in 
form, and the chalk-white nerves 
are the chief outward character- 
isties whereby to distinguish this 
species from simplex. The form 
of the genital organs of both 
species are abundantly distinct. 
I have examined several 
individuals in Mr. Dale’s collec- 
tion, taken by him at Bonchurch, 
Isle of Wight, and it has also 
been taken by Mr. Douglas at 
Deal on Hippophie rhamnoides, 
in company with O. stzgmaticus. 
It appears in June, July, and 
October. 
[Revision of the Family Delphacide, and descriptions of several new 
species of the genus Delphax of authors]. 
(continued from p. 75). 
Species 5a.—LIBURNIA PALLIDULA. 
Delphaa pallidula, Boh., Handl., 48, 16 (1847) ; Ofvers., iv, 265, 9 
(1847) ; Stal, Ofvers., xi, 191, 6 (1854) ; Flor, 
Rhyn. Liv., 
u, 44, 3 (1861); Kirsehb., Cicad., 
25, 11 (1868) 92. 
Developed form &. 
Pale yellow, with a slight fuscous shade. 
Elytra: middle nerve black. 
Head yellow. Antenne yellow, granules brownish. yes, in life, greenish; after 
death, dark brown. Ocelli minute, black. 
Thoraw: pronotum yellowish-white. Scutellwm ferruginous, keels more or less 
broadly whitish. Elytra: coriwm between the anterior margin and the middle 
nerve almost white, from thence to the claval suture yellowish; the furcate 
middle nerve, from about in a line with the apex of the clavus, black; apex of 
the marginal nerve between the bifurcation, black; clavus yellowish, nerves 
darker. Wings pale, transparent; two entire nerves, the transverse nerve 
and a short one from its upper extremity to the dorsal angle, black. Sternum 
pale yellow. Legs pale yellow. Claws black. 
