Ceuthorrhynchus. | RHYNCHOPHORA. 343 
the tooth obsolete in the male; elytra black- 
blue or slaty . . C. HIRTULUS, Germ. 
2. Elytra with scales, or - hairs (recumbent or “rarely 
raised), forming at least two rows on each 
interstice, 
A. Elytra with raised pubescence, visible if 
viewed sideways. 
a. Base of thorax almost straight ; pubescence 
of elytra even, coarse and very distinct, 
brown with a white scutellary patch and 
some white dots on the elytra . . . C. PILOSELLUS, Gy/ll. 
b. Base of thorax bisinuate produced towards 
scutellum. 
am, Clothing of elytra very distinct,in part con- 
sisting of brownish-white scales ; 3 general 
colour brownish . . C. QUADRIDENS, Panz. 
b*. Clothing of elytra not “distinct ‘unless 
viewed sideways, consisting of fine pubes- 
cence; general colour black blake C. PICITARSIS, Gtyll. 
B. Elytra with the clothing variable, but always 
recumbent, and not, or scarcely, visible if 
viewed sideways. 
a, Elytra metallic blue with a white ick at 
base of suture. . . Syria? C. SUTURELLUs, Gyll. 
b, Elytra not metallic. 
a*, Elytra with fine but very distinct white 
stripes along certain of the strie, which 
are also present on thorax, and with 
oblique white stripes across some of the 
interstices, forming a pattern; sizelarge. C, GEOGRAPHIOCUS, Goeze. 
(echit, F.) 
b*. Elytra without white stripes on the 
striae ; interstices variably coloured. 
a}. Ninth interstice furnished with a row 
of warty prominences reaching to 
shoulder. . . C. POLLINARIUS, Forst. 
bt Vinth interstice resembling the others. 
t. Elytra without a light patch at 
scutellum. 
*, Outer margin cf tibiae before apex 
with a projecting tooth followed 
by a brush of bristles reaching to 
apex; elytra usually with a white 
patch on each side towards middle 
of margin. . C. vipvatvs, Gyll. 
** Outer margin of tibie either 
simple or furnished with bristles 
before apex but not toothed. 
+. Central furrow of thorax fine ; 
scales of elytra fine, subrotund- 
ate, . C, ANGULOSUS, Boh. 
++. Central furrow of thorax 
deep; scales of elytra fili- 
form. 
{. Thorax almost glabrous ; 
anterior femora with a 
small tooth-like fascicle. 
