Corymbites. | SERRICORNIA. 111 
II, Antenna obtusely serrate from the fourth joint in- 
clusive. 
. Thorax with the posterior angles carinate; size 
larger. 
1. Antenne with the third joint one and a half times 
as long as second ; pubescence thick and silky and 
arranged in patches, giving the upper surface a 
strongly variegated appearance ; upper surface not 
metallic) s) 4 : C. HOLOSERICEUS, F. 
2. Antenne with the third joint double as s long as 
second; upper surface more or less distinctly 
metallic. 
A. Upper surface strongly metallic (usually bright 
geneous or blue), without pubescence . . C. anevs, L. 
B. Upper surface not strongly metallic, with dis- 
tinct pubescence, whichis, however, not arranged 
in patches. 
a. Thorax with obsolete central furrow ; pubes- 
cence fine and close, sate e ; legs red; size 
smallerne i.) ign i . C. METALLICUS, Payk. 
b. Thorax with central furrow more or less dis. 
tinct, at all events at base; pubescence coarse 
and rather scanty, whitish ; ee, as a rule, 
black; sizelarger . . . C. IMPRESSUS, F’. 
. Thorax with the posterior angles not carint ate, upper 
gates very finely punctured; size small; elytra 
black with a yellowish spot at shoulder or entirely 
Tedgish-yelOW "<i ws fee el erh ye fe «cig ety Os DIPUSTUEATUM UE, 
GC. castaneus, L. (Calosirus castaneus, Thoms.). Head and thorax 
black, clothed with thick villose yellow pubescence ; elytra of a bright 
yellowish-castaneous colour with the apex black; antenne, legs, and 
under-side black ; head very thickly and rather coarsely punctured, eyes 
moderately prominent, thorax varying in the sexes, thickly and finely 
punctured, longer than broad, with posterior angles prominent and 
divaricate, not carinate ; scutellum large, dark; elytra long oval, with 
sides gently rounded, with fine punctured striz, interstices finely punc- 
tured and pubescent; under-side clothed with fine and sparing greyish 
pubescence. L. 8-9 mm. 
Male narrower than female, with the thorax narrower and more parallel- 
sided, and the antenne longer and strongly pectinate. 
Female broader and more convex, with the thorax more ample and 
more rounded at sides, and the antenne shorter and strongly serrate. 
By sweeping, &c.; very rare; Moushold Heath, Norwich, and Isle of Wight 
(Stephens); Monmouth, under stones (Kuper); Northumberland and Durham 
district, Sea-coast near Hawthorne Dene, Rev. R, Kirwood (Bold). 
C. pectinicornis, L. (Ctenicerus pectinicornis, Latr.). A large 
and conspicuous species, of an zneous-green colour, shining ; head very 
strongly punctured, antenne black; thorax longer than broad, coarsely 
and strongly punctured, but less closely than in the succeeding species, 
ceatral furrow broad and distinct, posterior angles much projecting, 
