of the Genus Hydroporus. 469 



H. quinquelineatus, Zett. 



Zett. Faun. Ins. Lapp. i. 335. 



Aubt§, Iconographie, v. 307, pi. 42. fig. 2. 



Sp. ? Waterhouse, Cat. Brit. Col. 8vo. 1861, p. 107. 



Examples of this species were taken, some years ago, by Mr. 

 Waterhouse, probably in the London district : it is a new species to 

 the British lists. It is closely allied to H. reticulatus, Fab., with 

 which it may often have been confounded. The thorax is a trifle 

 broader, the basal margin of fuscous is more distinct, and the punc- 

 tation somewhat more frequent and deeper : in the elytra, the four 

 longitudinal markings, which in H. reticulatus are interrupted post- 

 medially, and are not continued to the base, are narrower, more 

 regular, uninterrupted, and continued to the base parallel with and 

 similar to the sutural marking. The punctation of the elytra is 

 especially different : in H. reticulatus, under a high power, the surface 

 will be seen to be covered with very minute and very thickly distri- 

 buted punctures, among which are others deeper, broader, and at 

 some distance from each other ; in H. quinquelineatus, the punctures 

 are uniform and coarse, tolerably evenly arranged. I have received 

 the species from Dr. Schaum, Prof. Boheman, and others, from Lap- 

 land and Norway. British examples, taken as yet only by Mr. 

 Waterhouse, are in the cabinets of Mr. Waterhouse, Dr. Power, and 

 Eev. H. Clark. 



H. Andalusice, n. sp. 



H. ovalis vel pene oblongo-ovalis, depressiusculus, haud pubescens, sub- 

 tilissime et crebre punctatus, testaceus vel fusco-testaceus : thorace 

 ad latera rotundato, ad discum medium subrotundato (marginibus 

 leviter depressis), antice et ad basin irregulariter punctato etiamque 

 plus minus transverse nigro, maculisque duabus ad medium basalibus 

 subcircularibus nigris : elytris griseo-testaceis, striis duabus undique 

 punctulatis obsoletis, nigro lineatis, maculis nigro-fuscis diversis pluri- 

 bus ordine veluti tribus vittis transversis dispositis : pedibus rufis, 

 tarsis anterioribus rufo-fuscis : antennis rufis, ad apicem fusco notatis. 



Long. corp. 2} lin., lat. \\ lin. 



Very closely allied to a species (H. ClarTcii) discovered in the 

 Canaries by Messrs. Gray and Wollaston, and described by the 

 latter in < Annals and Magazine of Natural History,' 1862 (June), 

 p. 438. After a very careful examination of the two forms both 

 by Mr. Wollaston and myself, it has seemed to us that the two 

 ought to be recorded as distinct species : a comparison of a series of 

 the two shows that H. Clarkii is larger, more oblong, more shining, 

 less pubescent ; the spines also at the apex of the clvtra are less 



