CYDNID.E. 57 



CYDNUS ALBOMAKGINATUS, Hahn, Wanz. i, 167, t. 26, 6g. 86 (1831); 



Burm. Handb. ii, 375, 4 (1835); Eamb. 



Faun. And. ii, 111, 2 (184-2) ; Schitt. Arb. 



and Verand. 183, 33 (1844) ; Kolen, Mel. 



Ent. iv, 66, 194 (1846) ; Flor, Rhyn. Liv. 



i, 156, 2 (1860). 



SEHIRUS Am. et Serv. Hem. 97, 4 (1843). 



GNATHOCONUS - Fieb. Europ. Hem. 366, 1 (1861). 



Black, very convex above and beneath, shining ; above very deeply 

 but finely punctured ; the lateral margins of the pronotum 

 and elytra yellowish white. 



Head very much deflected, nearly vertical, almost quadrate, rather 

 longer than broad ; Face ; the anterior margin deeply notched ; the 

 margin of the side lobes and the apex of the short, narrow, central 

 lobe slightly reflexed. Antennce : basal tubercle small, nearer to the 

 rostrum than the eyes ; 1st and 2nd joints in length subequal, 

 each larger than the 3rd ; the 1st joint is piceous, the 2nd yellowish, 

 the rest black, with the apex narrowly piceous. Eyes small, rather 

 prominent. Ocelli small, black. Rostrum piceous, the base paler, 

 reaching to the 2nd pair of coxaa. 



Thorax. Pronotum : the lateral margins yellowish white, very deli- 

 cately reflexed ; disk, towards each side with a slight fovea. Scutellum; 

 the apex almost punctureless, above the deflexion concave. Elytra : 

 Corium with the punctures deeper, wider apart, and more in rows 

 than on the scutellum ; anterior margin yellowish white ; posterior 

 margin straight : Membrane transparent, whitish. Sternum deeply, 

 coarsely punctured, with three transverse channels, of which that on 

 the prosternum is deepest ; Prosternum with a wide rostral channel. 

 Legs black ; hinder tibiae with finer spines than on the other tibi ; 

 tarsi piceous. 



Abdomen beneath very convex, shining, smooth. 



Length, 2 2i lines. 



Common in the London district, at the roots of grass, on dry 

 banks, in spring and autumn. 



