Aciliu^.] ADEPIIAGA. 209 



entirely rufescent without the dark markings at the base of femora ; in 

 the female the pubescence at sides of thorax is almost, if not quite, 

 absent, and the third furrow is narrower; the underside is somelimes 

 entirely testaceous. Long. 15^, lat. 9? mm. 



Ponds and ditches; local aud much less common than the piecedin": ; London 

 district, Earlswood (Brewer) and Reijjate (Liiiaull) ; Wliittlesea .Mere; lluutiiij,'don- 

 sliire Fens ; Scotland, scarce, Lowlands, Forth, Solway, Clyde, aud Moray districts ; 

 Fife, and Polmout near Glasgow (Power). 



GRAPHODERES, Eschscholtz. 



This genus contains about a dozen species from Europe, Xorthern 

 Asia, North America, and Japan ; our single British species has been 

 long included under ILjdaticiis, but apart from other differences it may 

 be distinguished by having the claws of posterior tarsi eij[ual, whereas 

 in llydaticas they are very une(]^ual. 



G-. cinereus, L. Oval, rather broad and convex, shining ; head and 

 thora.x rcddisli testaceous, the former with the vertex and other markings 

 black, the latter with two more or less broad Idack ])ands on anterior 

 and posterior margins, which are distinct and well marked and reach the 

 front and hind borders, but not the sides ; elytra apparently black with 

 very hue and small scattered testaceous markings ; margins and a thin 

 line near suture testaceous; underside and legs reddish testaceous; male 

 with front tarsi strongly dilated and furnished with three larger and a 

 number of smaller cupules, thorax rather longer than in the female ; 

 sculpture of the elytra identical in the sexes. Long. \i\, lat. 8^ mm. 



One of the rarest of the British Dytisclda; ; it has not been found for many years ; 

 in former years it occurred in the Cambridge aud Huntingdonshire Fens, aud used tj 

 be taken by Dr. Power and other collectors. 



GYRINID^. 



This family is one of the most distinct of tlie whole order of 

 Coleoptera ; it is so anomalous in many points that it might be with 

 reason formed into a sub-order ; * its position, however, is a matter uf 

 some difficulty ; it is almost universally classed with the Adejthaga, but 

 it is l)y no means certain that it can be retained in this connection ; at 

 tlie same time it must be admitted that several of the characters in 

 which its memljers dill'er most widely from the Carabidaj and L)ytiscid:u 

 are reproduced in individual members of those families, and it is at all 

 events plaui that the Clyriniike, if separated from the Adephaga, must be 

 regarded as linding in them their nearest allies; the chief dillerences are 

 as follows : — 



1st. The mouth parts of the (lyrinid;e differ very widely from those 

 of the Caral)id;e ; the bruail blunt mandibles resemble those of certain 



Having equivalent value with the Adepbaga. 



