Mr. J. Walton on the genus Otiorhynchus. 451 



the same localities ; but I once met with it very plentifully in 

 June in the Isle of Portland beneath stones, where there were no 

 hedges, and without finding a single specimen of Ot. tenebricosus. 

 The species figured 9 c? ? , in PI. XV. and 10 c??, exhibit the 

 difiference of size and form between the two species comparatively, 

 and between the sexes of each ; and also the difference of sculpture 

 of the elytra of the females ; the antennse c? ? of each species, 

 which are considerably magnified, exhibit their diversity of struc- 

 ture. 



11. Otiorhynchus atroapterus, De Geer, Gyll., Schonh., Steph. 

 Manual. 



— ater, Steph. lUustr. 



— niger, Steph. Manual secund. ejus Mus., non Fab. 



— arenarius, Kirb. MSS. 



My foreign specimens sent by Germar as Ot. atroapterus of 

 Gyll. agree with this insect. 



Extremely variable in size. Length 3|^ to 5 lines. Common 

 in many places on the sandy coasts of Great Britain in June. 



13. 0. Monticola (Dej. Cat.), Germ., Schonh., Steph. Manual. 



— IcBvigatus, Gyll., Steph. Illustr. 



This insect is identified as Cure. Icevigatus by specimens in 

 the collection of Kirby from Gyllenhal. 



The strise of the elytra in some individuals are very distinct, in 

 others indistinct. 



Found in Scotland by the Rev. W. Little, Mr. E. N. Greville, 

 and Mr. Weaver. 



13. 0. scabrosuSj Marsh., Steph., Schonh., Kirb. MSS. 

 Pachygaster crispatus, Dej. Catal. 



Rather local, and not very abundant. I once found a number 

 of specimens in a thick white-thorn hedge near Ryde, Isle of 

 Wight, the beginning of August. 



14. O. ligneus, Oliv., Schonh., Steph. Manual. 



— scahridus, Steph. Illustr., Schonh., Kirb. MSS. 



I have a specimen from Chevrolat of Ot. ligneus of Oliv., which 

 is unquestionably identical with Ot. scahridus of Kirb. ; Schon- 

 herr however has described the latter in his Supplement as a di- 

 stinct species. 



Frequently taken in sandy and gravelly localities, but not vei*y 

 common. 



15. O. maurusj Gyll., Steph., Curt., Schonh. 



Chiefly found in the north of England and in Scotland, but I 

 believe never in any quantity ; specimens taken on the sides of 

 Skiddaw, Cumberland, by Mr. Marshall, and likewise in Scotland 

 by the Rev. W. Little and Mr. R. N. Greville. 



32* 



