344 RHYNCHOPHORA. [ Ceuthorrhynchus. 
aa. Sides of breast very closely covered with 
greyish white scales; tarsi black. . . . OC. pLEUROsTI@MA, Marsh. 
(sulcicollis, Gyll. nee Payk.) 
bb. Sides of breast almost bare; tarsi pitchy 
medy ie t . C. ALLIARIR, Bris. 
tt. Thorax clothed with long ashy pubescence or 
whitish linear scales; anterior femora without 
fascicle . - C. RAPR, Gyll. 
bt. Elytra with a nite or irowninlie white. patch at 
scutellum. 
*, Elytra without any pattern of scales. 
t. Elytra with a very distinct isolated white spot 
at apex, opposed to the basal spot . . . . C,. VerRuUcATUS, Gyll. 
(diguttatus, Boh.) 
+f. Elytra without distinct isolated apical spot. 
re ee and tarsi and apex of femora red . . C. RESEDR, Marsh, 
. Tibize black or pitchy black. 
an Thorax rather convex, covered with small 
and extremely close circular punctures; 
elytra convex not at all asperate at the 
sides ; apex of pygidium with a deep in- 
cision in both sexes . . . C. PUNCTIGER, Gyll.* 
bb. Thorax rather depressed, shagreened ; 
elytra plainly depressed in front, finely 
asperated towards the sides ; pygidium 
foveolate behind in the male, entire in the 
female. . . . C,. marcinatus, Payk.* 
**, Elytra with a very indistinct pe .ttern of scales, 
but with more or less defined whitish or yellowish 
white and blackish spots. 
+. Thorax longer, less gues constricted in 
front; elytra oval . C. URTICH, Boh. 
Tt. Thorax shorter, more "strongly constricted in 
front; elytra shorter, oblong-oval . . . . . C. RUuGULOSUS, Herbst. 
ed Elytra with a distinct pattern of scales. 
fT. ‘Thorax long, about as long as its breadth at 
EEG G6 » . » . O. MELANOSTICTUS, Marsh. 
+t. Thorax short, evidently transvers, 
f. Scutellary patch separated from the lateral 
fascia by four interstices. 
aa. Antenne and tibie red, club of former 
sometimes dark. 
aa*, Second interstice of elytra without a 
white spot at base; thorax simply convex 
at sides; anterior femora witha large tooth (C. ASPERIFOLIARUM, Gy/ll, 
bb*. Second interstice of elytra with a white 
spot at base; thorax angHianly raised at 
SIGES| =e oe - 6 « « « C. ARcUATUS, Herbst. 
Ub. Antenne and tibie black . Suis C. EUPHORBIA, Bris. 
¢. Scutellary patch joined to the lateral fascia 
* With regard to these two species I have followed M. Bedel, and I have also 
followed him in placing C. distinctus under the sub-genus Ceuthorrhynchidius ; 
these species have always been a great difficulty to collectors; I have never seen a 
specimen of M. Brisout’s C. rotundatus which has been recorded from France and 
Britain; M. Bedel entirely omits it. 
