248 
inwards ; outside slightly convex ; seen from above, the whole pala 1 
a flattened and twisted appearance, resembling one of the blades o 
steam-ship's screw-propeller. 
The following species, in the form and width of the head in i 
eyes not reaching the posterior margin, in the presence of the fac 
depression in both sexes, and in the form of the pronotum, recec 
from the type of Cori.a, and approaches Oynratia, and it may hereafi 
be deemed desirable to establish for it a new genus, which mav probat 
also include Corixa Uogenloferi, Fieb 
COBIXA ALPESTRIS, U. Sp. 
Corixa alpestris, Buchanan White, in litt. 
Black, shining. Rend considerably wider than the pronotut 
prominent in front; facial depression in both sexes. Pronotun. ar 
clavus delicately rastrate. Pronotum short, angular posteriorly di. 
with a distinct longitudinal keel on the anterior half, and about 'eigl 
indistinct, impressed, concolorous, transverse lines. Olavus and corL 
witli very iine, scarcely perceptible yellowish lines. PaJce in both sexe 
mrrow, very long-cultrate, in the ^, seen from the side, at the base 
on the upper-side, roundly widened, the dilatation, seen from above 
forming a long, cordate depression 
ifeac^ including the eyes, much wider than the pronotun., anteriorly convex, i, 
front prominent beyond the eyes, posteriorly, on each side piceous, depre..sed 
the xnuMle rather elevated, on each side of which, and along the margin of th, 
eyes, xs a row of punctures, other scattered punctures are also on the crown , 
posterior margin sharply raised, extending behind the eyes. Face coverec 
with very long, projecting, yellowish hairs; facial depression in S oval 
concave, extending on the frontal prominence beyond the eyes, in ? piceous 
flat, extending only to the middle of the eyes ; lalru^n yellowish-brown. 
Thora... pronotu,n short, pentagonal , sides short, nearly straight, hinder sides 
nearly straight, apex obtusely pointed; disc shghtly convex, with about ei^ht 
transverse, scarcely perceptible, slightly impressed concolorous lines (in some 
examples, in certain lights, the intervals are indistinctly yellowish at the 
ends) ; on the anterior half of the disc a distinct longitudinal keel. Elytra • 
cl^vru. with delicate, undulating, interrupted, transverse lines rarely reaching, 
the inner margin, more distinct at the base; claval suture raised, distinct 
cor^urr., clothed with very fine, short, decumbent, yellowish hairs and with deli- 
cate, undulating, much interrupted, yellowish, transverse lines, the posterior, 
inner angle almost devoid of marking; membrane-suture obsolete, and the, 
markings continued over it; marginal channel livid black: m.n, We with 
mark,n,sl,ke those of the corium, short and parallel on the inner side the. 
n.argin all round black, unspotted. Sternum: presternum side lobes pale 
