Mr. J. Walton on the Genus Apion. 453 



coarsely rugose-punctate ; eyes very prominent, black : rostrum 

 short, ciu'ved, verij stout, pmictulated and shining, the apex black : 

 thorax subcylindrical, dilated at the middle, rather deeply con- 

 stricted and margined anteriorly, narrowed posteriorly, convex 

 above, thickly and coarsely punctured : elytra obovate, very con- 

 vex, deeply punctate-sulcate, the interstices narrow and elevated, 

 scarcely as broad as the sulci : legs rather stout ; the tibiae and 

 claws at their apices piceous. (Length 1^ — If line.) 



There is a great resemblance between the present species and 

 Ap. frumentarium, but this is a larger and more robust msect, 

 with the rostrum distinctly thicker ; the punctures on the head 

 and thorax are larger and deeper, and the legs stouter. 



This species is unkno\ATi to Germar and Schonherr ; it is appa- 

 rently rather rare ; I possess specimens taken in Yorkshire, and 

 others from a grass field in September on the west side of Turner's 

 Wood, Hampstead : I never found it in company with Ap. fru- 

 mentarium. 



20. A. miniatum, Schonh. 



— frumentarium, Herbst, Marsh., Kirb., Germ., Steph. 

 Found in many places throughout England on the common 

 dock {Rumex ohtusifolius) in July. 



21. A. Onopordi, Kirb., Germ., GylL, Steph., Schonh. 



— (var.) rugicolle, Steph. 



— penetrans, Steph. non Germ, 



I have never seen an indigenous specimen of Ap. penetrans of 

 Germar (recorded as British) ; my foreign examples from Germar 

 have the habit of Ap. Onopordi, but they are nevertheless very 

 distinct from it : the thorax is less convex, and the punctures much 

 smaller; the elytra are elongate, very obscure blue-black, and^w- 

 bescent. 



Common in Yorkshire and in many other places on thistles 

 [Onopordum Acanthium). 



22. A. radiolus, Marsh., Kirb., GylL, Steph., Schonh. 



Cure, aterrimus, Marsh., Gyll. vol. iii. 

 A. (var.) oxurum, Kirb., Germ. 



— ( $ ) nigrescens, Steph. 



— validum, Germ., Schonh. 



The foreign specimens oiAp. validum sent me by Schonherr and 

 Germar are clearly identical with Ap. radiolus of Marsham. 



Very abundant in Yorkshire and the south of England on 

 mallows [Malva sylvestris) in June. 



23. A. confluens, Kii'by, Steph. 



— stolidum, Gyll., Schonh. 



For remarks on this species I must refer to the following 

 {Apion stolidum of Germ.). 



