Mr. J. Walton on the genus Otiorhynchus. 447 



Of Ot. septentrionis of Herbst I possess several examples from 

 Germar and Chevrolat, but I have not hitherto observed a native 

 specimen in any collection. 



Widely distributed throughout Great Britain, occurring almost 

 everywhere from May to October in thick white-thorn hedges, 

 especially in those, which have been cut and clipped. 



4. Otiorhynchus rugifronSy Gyll., Steph., Schonh. 



— scaher, Steph. sec. ej. Mus. 



— Dillwynii, Steph. Illustr., Kirb. MSS. 



— rugicollis, Steph. 



This is the true Ot. [Cure] rugifrons of Gyll. identified by 

 foreign specimens in the collection of Kirby, from Gyllenhal 

 himself. 



The sculpture greatly varies ; in some specimens the thorax 

 has the dorsal channel very distinct, in others more or less ab- 

 breviated, or entirely wanting. 



I am of opinion that Ot. rugicollis of Steph. (which is repre- 

 sented in his cabinet by one insect) is but a variety of Ot. rugi- 

 frons'y having the thorax channeled, the elytra indistinctly stri- 

 ated, and the anterior femora obscurely denticulated. 



Found in the south of England, and in Scotland, but I believe 

 very sparingly ; specimens taken on the coast near Little Hamp- 

 ton, Sussex, in August, by Mr. S. Stevens. 



5. O. ovatus, Linn._, Mus. Linn., Fab., Marsh., Gyll., Steph., 



Schonh. 



— vorticosus (Chevr.), Schonh., Steph. Manual. 



I possess a specimen from Chevrolat of Ot. vorticosus of 

 Schonh., which is decidedly a large variety of this insect. 

 Very common in hedges about Hampstead in June. 



6. O. pabulinus, Panz., Germ., Steph. Illustr. 



— confinis, Kirb. MSS. 



Mr. Kirby separated this insect from the preceding under the 

 name of ' confinis,' appending the note, ' sine sulcis •/ it is also 

 separated in many cabinets on account of a striking peculiarity 

 in its general habit. Mr. Stephens, after describing it in his 

 'Illustrations,^ adds, "Probably an immature variety of Ot. ovatus, 

 but its form and sculpture are slightly dissimilar." He has how- 

 ever sunk it in his ' Manual ;' yet I think it has a strong claim 

 entitling it to rank as a distinct species. By far the greatest 

 number differ from Ot. ovatus in being piceous, never black, and 

 clothed with brownish pubescence, and by having the thorax 

 shorter in proportion to the breadth, less narrowed posteriorly, 

 less distended at the sides, and thickly tuberculated, not sulcated 

 on the back ; the legs shorter, the clava of the femora less robust, 

 with the bifid teeth evidently much shorter and smaller. 



