204 Mr. J. Walton on two British species 



XVII. — Descriptions of two new British genera of Insects, and of 

 two new species J belonging to the family Curculionida3. By 

 John Walton, E.L.S. 



Genus Trachodes, Schupp.y Germ., Schonh. 



Char. Gen. *^ Antennae moderate, rather slender ; funiculus 

 seven-jointed ; the two basal joints obconic, the first stouter than 

 the second, the remainder subnodose, very gradually increasing 

 in breadth; the club short, ovate. Rostrum elongate, rather 

 slender, round, linear and curved. Thorax truncate at the base 

 and apex, rounded at the sides, and coarctate in front. Scu- 

 tellum none. Elytra subovate, subtruncate at the base, the hu- 

 meral angles subrotundate, attenuated towards the apex, mode- 

 rately convex above. ^^ 



Obs. Body ovate, convex, hispid, apterous, and of small size. 



Trachodes hispidus, Linn., Germ., Schonh. 

 Rhynch. squamifer, Gyll. 



Ovate, convex, fusco-piceous, hispid, clothed with depressed 

 cinereous scales, and with erect scales. Head small, rounded, 

 rufo-piceous, the vertex very convex and minutely punctured; 

 eyes black, depressed; rostrum longer than the head and thorax, 

 sublinear, slender, curved, rufescent, minutely punctate-striate 

 at the base, smooth and shining towards the apex. Antennse 

 inserted a little behind the middle of the rostrum, rather thick, 

 rufescent. Thorax subglobose, piceous, narrowed at the base 

 and apex, rounded at the sides, somewhat convex above, pulvi- 

 nated and closely punctulated ; densely clothed at the sides with 

 small cinereous scales and sparingly so on the disc, besides which 

 there are two or four longitudinal rows of erect black scales. 

 Scutellum none. Elytra ovate, very convex above, piceous, con- 

 nate, attenuated at the apex, deeply sulcate, the sulci impunctate, 

 the interstices indistinctly rugulose and alternately elevated ; 

 clothed with depressed cinereous scales, variegated towards the 

 apex, forming, in recent specimens, a large cordiform fascia com- 

 mon to both elytra, and having likewise from six to eight parallel 

 rows of erect black scales on the interstices. Legs elongate, 

 rufescent ; femora obscure, stout, clavate, each armed with a large 

 acute tooth, and annulated with pale scales ; all the tibise dilated 

 at their apices similar to Anthonomus Ulmi. Length 2 lines. 



I have a foreign specimen of this insect forwarded to me by 

 the late M. Schonherr; at first sight it reseinhles Acalles RobojHs 

 of Curtis, from which however it widely differs in the form of the 

 rostrum, the want of a pectoral groove, the length and form of 

 the legs, and in having the femora armed and the tibise dilated. 



