268 RHYNCHOPHORA. [Grypidius. 
large; the elytra are much broader than thorax with the shoulders well 
marked, and the second abdominal segment is a little longer than the 
third and fourth taken together; the tarsi are moderately broad, with 
the claws rather large; the species are found in and on aquatic plants. 
G. equiseti, F. (Hrirrhinus equiseti, Thoms.), Piteh-black ; breast, 
sides of thorax and elytra, and apex of latter closely covered with white 
and brownish-grey scales, each elytron with a white spot in the middle 
and at shoulders, and with the scales at sides extended in a dentate 
patch towards middle ; these markings, however, are only distinct in 
fresh specimens ; antenne pitchy ; thorax about as long as broad with 
sides contracted before apex, closely and finely sculptured ; elytra much 
broader at base than thorax, dilated at shoulders (which are well marked) 
and behind middle and very gently sinuate between the dilatations, 
narrowed from posterior quarter to apex, with fine punctured strie, and 
the third, fifth, and seventh interstices more or less elevated; legs dark, 
more or less ferruginous, femora ringed with grey ; mesosternum narrow, 
but not linear between the intermediate coxe. L. 45-65 mm. 
On Equisetum arvense ; also, according to Bedel, on #. palustre; rarely common, 
but apparently widely and generally distributed throughout England and Wales; 
London district, not common, Battersea Fields, Claygate, Coombe Wood, Ripley, 
Chatham; Hythe; Hastings; Portsmouth district; Isle of Wight, Luccombe, &c. ; 
Glanvilles Wootton; Bath; Bristol; Hertford; Bungay, Suffolk; Aylsham and 
Rudham, Norfolk; Needwood Forest; Eggington, Burton-on-Trent; Gumley, 
Market Harborough ; Ripon; York; Scarborough; Wallasey sandhills (common in 
spring); Chat Moss; Manchester district ; Northumberland and Durham district ; 
Scotland, local, Solway and Forth districts; Ireland, Bray, Belfast, Armagh, &e. 
ERIRRHINUS, Schonherr (Votaris, Germ.). 
The genus Erirrhinus, if regarded as including Notaris and Thryo- 
genes, contains about forty-five or fifty species which are chiefly confined 
to the northern parts of the Northern Hemisphere ; two or three species 
have also been described from the Australian region; in its restricted 
sense, as here used, it comprises about a dozen moderate-sized insects, 
of a black or pitch-brown colour, with or without pubescence; they 
are always found in marshy places near water or on the banks of 
streams ; but little appears to be known regarding their life history ; 
the sexual differences are unimportant. 
1, Thorax thickly punctured, with a more or less distinct 
smooth central line; upper surface dull or only slightly 
shining, with more or less distinct pubescence or long hair- 
like scales. 
i. Elytra rather thickly and distinctly clothed with scale- 
like pubescence, or slender scales, with a small light spot 
behind middle of each, sometimes more or less obsolete ; 
size larger. 
1, Elytra shorter and more oval; light spots on elytra 
