Cisside. | SERRICORNIA. 205 
Tut, Aimigmmra Gsfoummecl 4 5 6 9 5 0 6 oo 0 ¢ ENNEARTHRON, Mell. 
TIL, Antenna S-joited .. 2 0s Se ai = OcrotEeMNts, Mell. 
Crs, Latreille. 
This genus comprises more than a hundred species, of which about 
forty occur in Europe; the rest are widely distributed, representatives 
having been recorded from the Atlantic Islands, South Africa, Mada- 
gascar, North and South America, Japan, Ceylon, &c.; they are, as a 
rule, small and obscure insects, but in many cases the clypeus and 
anterior margin of the thorax are armed in the male with horns or 
lamelle which present a very curious appearance ; many of the species 
are very closely allied and are hard to distinguish, the differences often 
depending on the comparative strength of the punctuation and pubes- 
cence; it is obvious, therefore, that a table of species must be more or 
less unsatisfactory, and the one given below must be regarded as pro- 
visional, and must not be trusted without a reference to the detailed 
descriptions. Thomson divides the genus into separate genera, Hadraule, 
Eridaulus, and Cis, i. sp., but the distinctions he gives hardly warrant the 
separation, and they have not been generally adopted. 
I. Thorax uneven, with irregular impressions on 
dise. 
i. Impressions on thorax rather distinct, base 
AOtibordered | f ocr. soon oalpstree bens) A CHRORNEL, Scop: 
(rugulosus, Mell.) 
ii. Impressions on thorax more or less obso- 
lete, base bordered . « - + © + + = C. vi~LosuLus, Marsh. 
II. Thorax with dise even. 
;. Thorax in male with two strong and pro- 
jecting teeth on anterior margin; pubes- 
cence very scanty . . . «+ > . . . C. BrpEentatvs, Ol. 
ii. Thorax of male without, or with obsolete, 
teeth on anterior margin. 
1. Pubescence very scanty, or almost absent ; 
upper surface shiny or very shiny. 
A. Form longer; elytra unevenly punc- 
tured. 
a. Size larger; form broader and more 
depressed; posterior angles of tho- 
rax almost right angles. . . . ~ C. ALNI, Gyll. 
b. Size smaller; form narrower and 
more -convex; posterior angles of 
thorax rounded. 
a*. Anterior angles of thorax pro- 
duced; colonr lighter . . . .- C. nitipus, Herbst. 
b*. Anterior angles of thorax not 
produced ; colour darker . . . C. Jacqgurmartt, Mell. 
B. Form very short ; elytra strongly and 
rather evenly punctured in rows. . C. uingEaTocrispratus, Mell. 
2. Pubescence distinct, rendering the upper 
surface, as a rule, more or less dull. 
A. Elytra rather regularly striate-punc- 
tate ; form elongate and depressed. . C. ELONGATULUS, Gyll, 
