123 THE ENTOMOLOGIST. 



B. lampros, B. decorum, B. monticola, B. tihiale, B. atrocce- 

 rideum, B. littorale, B. fluviatile, B. Jiammulatum, and B. 

 punctulatum. Some of these species are to be found among the 

 shingle close to the water's edge. Others are to be found 

 running with great swiftness in the sunshine over mud-flats, in 

 company with Elaphri and other beetles ; of these, perhaps, 

 B. pahuloswn, which looks like an Elaphrus in miniature, is the 

 swiftest : it runs, and even takes to wing, more like a Cicindela 

 than any other species. A great number, however, of river-bank 

 beetles live habitually in the cracks and crannies in the banks 

 themselves, and the most effective method of procuring a large 

 number of species is by throwing water (by means of the hands 

 or a small vessel carried for the purpose) against the banks : 

 the beetles, imagining that a flood is coming upon them, by a 

 natural instinct rush to the light, and may be captured in 

 numbers. Bemhidium fluviatile, Trechus discus, T. micros, and 

 many other beetles that used to be considered rare, may be 

 obtained in this way in fair abundance. The Anchomeni prefer 

 the banks of ponds; but A. marginatus, A. fidiginosus, and 

 A. micans are not uncommon on river-banks, and A. gracilipes 

 is to be looked for in similar localities. Species also of the 

 following genera among the Carahidce may be met with : — 

 Clivina, Dyschirias, Nehria, Chloeniiis, Patrohus, Taphria, Dichi- 

 rotrichus, T achy pus ; and if we include estuaries, we may add 

 many good species of Dromius, Amara, Harpalus, Stenolophus, 

 Pogonus, and others. Eiver-banks are usually rich in Staphy- 

 linidce ; some of the best Homalotce are found in such localities, 

 as may be seen from the following list of species : — H. ciirrax, 

 H. camhrica, H. eximia, H. fragilis, H. longida, H. delicatida, 

 H. siihtilissima, H. labilis, H. carbonaria, H. luridipennis, 

 H. hygrotopora, H. elougatula, H. simillhna, H. pallens, H. 

 aqnatica ; Tachyusa umhratica and T. constricta are also to be 

 found; and many species of Steiius (S. higuttatiis, S. guttida, 

 S. lustrator, S. pidiescens, &c.), Oxyteliis, Homalium, Bledius, and 

 others ; last autumn I turned out Bledius pallipes by hundreds 

 from the banks of the Severn, near Tewkesbury, by throwing up 

 water against them. 



Some of the minuter Staphylinidce, such as Thinobius, and 

 some of the very rarest of the Trichopteri/fiia, such as Actidium, 

 are river-bank insects, and ought carefully to be looked for among 



