78 MANDIBULATA. COLEOPTERA. 



shoulders a little prominent anteriorly, and obtusely angled, the back ante- 

 riorly somewhat convex, posteriorly gibbous, declining : legs stout, subequal, 

 anterior approximating: femora unarmed j tibiw nearly straight, the apex 

 angulated within, the anterior armed on the inner margin with a minute bent 

 hook. 



Grypidius, which resembles the insects of the three following 

 genera in several respects, may be readily known therefrom by the 

 gibbosit)'' of the elytra, which are tuberculated, deflexed at the 

 apex, and somewhat acute — by the small oblong scutellum, the 

 structure of the antennae, and slight dissimilarity in the anterior 

 legs. The only indigenous species is found in damp fields and 

 hedges. 



Sp. 1. Equiesti. Niger, squamulis albidis variegatus, elytris Umbo, punctisque 



duobus disci albidis. (Long. corp. 3 — 4^ lin.) 

 Rh. Equiseti. Fabricius.—Gr. Equiseti. Stepli. Catal. 164. No. 1679. 



Black, variegated, with whitish scales : head small, thickly punctured ; eyes dusky- 

 brown: thorax black, somewhat opaque, very thickly rugose-punctate, with 

 an impression in the middle of the base, its under surface and sides densely 

 clothed with whitish and dirty-flavescent scales ; scutellum whitish : elytra 

 faintly punctate-striate, the interstices finely coriaceous, the alternate ones 

 tuberculate, with the outer margin from the shovdder to the middle unequally^ 

 and the apex broadly, clothed with scales as on the sides of the thorax, the 

 disc with a few whitish spots, of which one towards the middle of the suture 

 is largest : femora black, with a white ring ; tibise dull ferruginous ; tarsi 

 dusky-black. 



Not uncommon in June, in some of the hedges in Battersea- 

 fields, and near Coombe-wood ; also at Hertford, Ripley, &c. " On 

 Equisetum arvense, not uncommon (near Swansea)." — L. W. Dill- 

 zcyn, Esq. 



Genus CCCIII. — Erirhinus, Schonherr. 



Antenna; geniculated, 12-jointed, elongate, somewhat slender; funiculus 7- 

 jointed, its two basal joints rather long, obconic ; the remainder also short, 

 nodose ; club oblong-ovate. Rostrum very long, curved, subfiliform : head 

 short, broad : eyes depressed : thorax subtruncate at the base and apex : wm- 

 ^cZ/«m rounded : elytra oblong, with the shoulders obtusely angulated, the 

 apex moderately convex and rounded: legs moderate, anterior approximating j 

 femora incrassated, simple; tibiw slightly curved within at the apex, and 

 armed with a minute hook. 



