344 RHYNOHOPHORA. \_Ceuthorrhynchus. 



aa. Sides of breast very closely covered with 



greyish white scales ; tarsi black . . . . C. PLETTBOSTIGMA, Marsh. 



(sulcicollis, Gyll. nee Payk.) 

 bb. Sides of breast almost bare; tarsi pitchy 



red C. ALLIABLE, Sris. 



JJ. Thorax clothed witk long ashy pubescence or 

 whitish linear scales ; anterior femora without 



fascicle C. BAP.E, Gyll. 



bj. Elytra with a white or brownish-white patch at 



scuteilum. 

 *. Elytra without any pattern of scales. 



f. Elytra with a very distinct isolated white spot 



at npex, opposed to the basal spot . . . . C. VERBTJCATTTS, Gyll. 



(biguttatus, Boh.) 

 j-f . Elytra without distinct isolated apical spot. 



J. Tibia3 and tarsi and apex of femora red . . C. EESED2E, Marsh. 

 JJ. Tibiae black or pitchy black. 



aa. Thorax rather convex, covered with small 

 and extremely close circular punctures; 

 elytra convex not at all asperate at the 

 sides ; apex of pygidiuin with a deep in- 

 cision, in both sexes C. PUNCTIGEB, Gyll.* 



bb. Thorax rather depressed, sbagreened ; 

 elytra plainly depressed in front, finely 

 asperated towards the sides ; pygidium 

 foveolate behind in the male, entire iu the 



female C. MABGINATUS, Payk* 



**. Elytra with a very indistinct pattern of scales, 

 but with more or less defined whitish or yellowish 



white and blackish spots, 

 f-. Thorax longer, less strongly constricted in 



front ; elytra oval C. TJBTIC.E, Boh. 



tf. Thorax shorter, more strongly constricted in 



front ; elytra shorter, oblong-oval . . ' . . . C. BUGFIiOSUS, Herbst. 

 ***. Elytra with a distinct pattern of scales. 



f. Thorax long, about as long as its breadth at 



base C. MELANOSTICTTJS, Marsh. 



ff. Thorax short, evidently transvers. 

 J. Scutellary patch separated from the lateral 



fascia by four interstices. 

 aa. Antennas and tibiae red, club of former 



sometimes dark. 



aa*. Second interstice of elytra without a 

 white spot ac base ; thorax simply convex 



at sides; anterior femora with a large tooth C. ASPERIFOLIABTTM, Gyll, 

 bb*. Second interstice of elytra with a white 

 spot at base ; thorax angularly raised at 

 sides C. ABCUATTTS, Herbst. 



bb. Antennae and tibiae black C. ETJPHOBBI^;, Bris. 



JJ. 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-gen"us Ceuthorrht/nchidius ; 

 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. 



