324 MANDIBULATA. COLEOPTERA. 



Sp. 5. Chrysanthemi. OMongo-ovata, valde, convexa, fusco-wnea, elytris regu- 

 lariter punctato-striatii, apice pedibusque testaceo-ferrugineis. (Long. corp. 

 f-llin.) 



Ha. Chrysanthemi. Ent. Hefte.—Steph. Catal. 217. No. 2207. 



Oblong-ovate, very convex, fuscous-brass, slightly shining : head with a very 

 obsolete transverse impression between the antennae : thorax very thickly and 

 finely punctulate, with a short impressed line on each side at the base: elytra 

 slightly but indeterminately brassy-^e*toceo2a at the apex, the disc regularly 

 and somewhat deeply punctate-^^r/a!"*?, with the interstices smooth: legs ferru- 

 ginous, with the posterior femora darker and glossed with brassy: antennae 

 testaceous, with the apex dusky. 



Occasionally met with in the vicinity of London in June, but 

 apparently more abundant near Bristol. " Raehills." — Rev. W. 



Little. 



Sp. 6. aenea. Oblongo-ovata, convexa, supra cenea, elytris punctato-striatis, an- 



tennis pedibusque testaceo-ferrugineis. (Long. corp. 1 lin.) 

 Ch. aenea. Marsham MSS.—Ra.. aenea. Steph. Catal. 217. No. 2208. 



Oblong-ovate, convex, brassy above: head and thorax deeply punctured, the 

 latter with two very faint impressed lines, one on each side : elytra moderately 

 punctate-^^rm^e, the interstices obsoletely punctate : antennae and legs entirely 

 ferruginous, with the hinder femora slightly brassy. 



From the Marshamian cabinet. 



Genus CCCC. — Diboiaa, Latreille. 



.^/i^ewTice short, ll-jointed: basal joint robust 5 second rather short, stout ; third 

 and fourth more slender, of equal length ; fifth also slender, subclavate and 

 rather longer ; sixth and following gradually increasing in breadth, with the 

 terminal joint ovate: /ieari small, fiat in front, concealed beneath the anterior 

 margin of the thorax, the latter short, transverse, truncate anteriorly, the sides 

 deflexed, the base bisinuated: elytra rather broad, obsoletely punctate-striate : 

 legs rather short, stout : posterior femora very much incrassated, their tibiw 

 curved at the base, with the apex thickened, armed with a bifid spur j their 

 external edge spinulose: tarsi all short: four anterior tibia simple. 



Dibolia is at once distinguished from the other saltatorial insects 

 of this family, by the concealed head, exclusively of the dissimilarity 

 in the structure of the antennse and of the tibise, the latter of which 

 are spinulose on the external edge, and have the apex armed with 

 a bifid appendage. 



