284 RHYNCHOPAORA. [ Smieronye. 
S. Reichei ; all the localities given above for the type form of S. Rezchet 
have been primarily assigned by British authors to S. jungermannie. 
TANYSPHYRINA. 
This tribe contains the genus Tanysphyrus, Schén., of which only 
one species is at present known; it is very small and lives on aquatic 
plants, more especially the duckweed (Lemna), and is spread over 
Europe, Northern Asia and North America; it has been by some 
authors referred to the Erirrhinina, but may easily be distinguished by 
the very short onychium, which is contained entirely by the lobes of 
the third tarsal joint. 
TANYSPHYRWS, Schonherr. 
The single species contained in this genus is a very small insect, 
which is found on species of Lemna, the rostrum is rather long and 
stout and the antenne are inserted a little behind its apex; the elytra 
are rather short and broad and considerably broader than the thorax ; 
the tarsal claws are free and the tibie armed with a strong hook at 
apex ; the femora are simple and the prosternum not emarginate. 
T. lemne, F. Oblong, convex, dull black, underside thickly 
clothed with whitish scales, rostrum black, shining, antennz and legs 
pitchy-red; thorax slightly transverse, with the sides very little rounded, 
closely and distinctly punctured; elytra oval, with strong punctured 
striz, interstices rather convex, upper surface with more or less distinct 
scattered spots of greyish scales; legs robust and rather long. L. 14 
mm. 
In ponds and ditches; on duckweed (Lemna) ; often found in flood refuse, moss, 
&e.; generally distributed and common from the Midland districts southwards, but 
rarer further north; Cheshire; Liverpool; Scarborough; not recorded from the 
Northumberland and Durham district ; Scotland, taken probably at Duddingstone 
Loch, in the Forth district, but recorded with some reserve by Dr. Sharp, who says 
he does not know what has become of the specimens (Scot. Nat, xxxvi. 189). Ireland, 
near Dublin. 
BAGOINA. 
The members of this tribe are very closely allied to the Erirrhinina, 
and they have, by many authors, been included with them ; they differ 
chiefly in their habits, which are, in all the species, aquatic or sub- 
ayuatic ; they are extremely sluggish and have no power of swimming 
like the aquatic Ceuthorrhynehina (Hubrychius aud Litodactylus) ; 
their only means of locomotion in water, therefore, is to cast themselves 
free from their plants, like the Helophori, and allow the current to 
carry them ; the chief character of the tribe lies in the tarsi, which have 
the third joint long, or comparatively long, behind the onychium, and 
