212 8ERRICORXJA. [R/toj>al<>(lontl(8. 



RHOPALODONTTTS, Mellie. 



This genus contains five European species, which are distinguished 

 from On by the shape of the anterior tibiae, and by having the tibim 

 dilated and denticulate at apex; some authors have a&signed It.fr<>nti- 

 cornis to the genus Ennearthron, believing the antennae to be 9- jointed ; 

 the three joints preceding the club are very small, and a mistake might 

 be made if a low magnifying power were used, or under certain lights ; 

 I have, however, carefully examined several specimens, and they are 

 plainly 10-jointed, the first two joints being large and inflated, the next 

 two elongate but much more slender, the following three minute and 

 transverse, but very distinct, and the last three forming a well-marked 

 club. 



I. Size larger; punctuation of elytra very coarse . . . R. PKBFOUATUS, &yll. 

 II. Size smaller ; punctuation of upper surface fine . . R. FBONTICORNIS, Panz. 



R. perforatus, Gyll. (punctiger, Waltl.). Oblong, short, broad 

 and robust, cylindrical, parallel-sided, of a lighter or darker pitchy 

 brown colour, rather scantily clothed with long pubescence ; antennae 

 testaceous; thorax broader than long, convex, rather dull, finely 

 margined, with the sides and hinder angles rounded, upper surface 

 finely and closely, but rather distinctly punctured ; elytra as broad and 

 twice as long as thorax, and of a lighter colour, short and cylindrical, 

 with very coarse and strong punctuation, the punctures being large and 

 round, and arranged in more or less distinct rows, and with a sutural 

 stria at apex ; under-side finely and thickly punctured ; legs yellow. 

 L. lf-2 mm. 



In fungi ; very rare ; Scotland, Highlands, Tiiy district ; it was first discovered in 

 Britain by James Foxcroft, who reared it from boleti gathered by him from old birch 

 trees in the Black Forest, near Rannoch, Perthshire, and it was afterwards taken by 

 Turner in the same locality. 



The short broad form, very coarsely punctured elytra, and long 

 pubescence will at once distinguish this species from all our other 

 Cissidae. 



R. fronticornis, Panz. A small and rather narrow species, oblong, 

 convex, not very shiny, black or pitchy black, sometimes lighter ; clothed 

 with fine and even pubescence ; antennae testaceous with club darker ; 

 thorax about as long as broad, or very slightly transverse, very finely 

 punctured, with the sides finely margined, and the angles obtuse or 

 rounded ; elytra less closely punctured than thorax, as a rule lighter 

 at apex ; legs testaceous. L. 1-1 1 mm. 



Male with two erect small horns on clypeus, and with the anterior 

 margin of thorax emarginate at apex, and produced into a minute 

 tubercle or horn on each side of the emargination. 



In fungi ; on old willows; very local, and, as a rule, rare; Weybridge, Claygate, 

 and Cowley (Power). 



