276 MANDIBULATA. COLEOPTERA. 



aquatic plants, in June. " Bottisham." — Rev. L. Jenyns. " Cardew- 

 m\xe:—T. C. Heysham, Esq. « York, &c."— TF. C. Hexdtson, 

 E.^g. " Duddingston-loch."— i?^y. W. Little. " Weston."— ^^z;. 

 J. H. Malthezas. 



Sp. 20. Typhse. Sublinearis, supra viridi-cenea, subtus argenteo-sericea, an- 

 tennis pedibusque testaceo variegatis, thorace subdepresso punctatissimo, elytris 

 apice emarginatis, interstitiis striarum strigosis. (Long. corp. 4—5 lin.) 



Do. Typhse. Brahm.—Steph. Catal. 209. No. 2115. 



Sublinear; above brassy-green, beneath with a silken silvery pile: headfusces- 

 cent;, punctulated : thorax slightly depressed, thickly rugulose-punctate, with 

 a very obsolete dorsal furrow, and very obscurely punctured : elytra a little 

 attenuated towards the apex, the latter slightly emarginate ; above moderately 

 convex^ with four obsolete depressions on the disc, the last regularly punc- 

 t2iiQ-striate, with the interstices finely strigose : sometimes brassy-green, at 

 others the suture is bordered on either side by an abbreviated golden-red 

 vitta, and the disc is variegated with blue : femora dull ceneous, with the 

 base ferruginous : tibice curved, dull ferruginous : antennas fuscous, with the 

 base of the articulations testaceous. 



Less abundant than the foregoing, and apparently local. I have 

 taken it on the banks of the Croydon Canal, near Greenwich. 

 " Wands worth-common."" — M?-. G. Wuterliouse. 



Sp. 2 1 . Hydrochseridis. Obscure fusco-oenea, opaca, tenue cinereo-pubescens, 

 thorace quadrato, vix punctulato, elytris subtiliter punctato-striatis, interstitiis 

 subtilissime coriaceis. (Long. corp. A^l — 5 lin.) 



Do. Hydrochseridis. Fabricius.—Steph. Catal. 209. No. 2116. 



Rather broad, depressed; dviW fuscous brassy, opaque, slightly clothed through- 

 out with a dense ashy pubescence : thorax subquadrate, very obscurely punc- 

 tulate, with a very obsolete abbreviated dorsal furrow, the anterior angles 

 with a large, rounded tubercle: elytra depressed on the back anteriorly, 

 ■moderately punctate-^^r/a^e, with the interstices finely coriaceous and clothed 

 throughout with a delicate ashy pile: legs rather long: femora with the base 

 testaceous, the apex exteriorly aeneous: tibiae and tarsi dusky-testaceous: 

 antennae black, with some of the apical joints ferruginous at the base. 



Not common, at least within the metropolitan district; it occurs 

 in Norfolk and also near Bristol. " Croydon Canal." — Mr. Ingall. 

 " Prestwick Car."— G. Wailes, Esq. " Brick Ponds near York." — 

 W. C. Hewitson, Esq. " Woolwich Marshes." — Mr. G. Waterhouse. 



