EBERHAHT'S KEY TO THE FAMILIES <>F INSECTS. 



(/(/. Head not vertical and seldom wider than the thorax : mandibles simple, 

 or very slightly toothed: color usually black, seldom spotted. 



cc. Hind legs fringed and fitted for swimming; trochanters not conspicuous, 

 . . Mind lege 



-hort. 



(.YKiNin.i i Whirligigs). 

 /ib outer lobe of maxilla; not palpiform; antenna filiform, but uenally S( 



g. Presternum prolonged behind into a point which fits into the 

 meso-sternum : short legs; very firm body. 

 h. Point movable. 



Kl.A 



hh. Prosternal point immovable. 



BUPR] 



mj. Prosternal point not prolonged; bodysofl or moderately firm. 

 i. Body moderately hard, with more or less elongated 



T'tinid.k. 

 u. Body soft. 



j. Antennae enlarged at tip ; palpi clavate 



cleridj: i Flower-bei ties), 

 jj. Antenna' not enlarged. 



Lami'vi.id.i. (Fire-J 

 hbh. Antenna; krobbed or clubbed. 



k. Palpi usually long and exceeding the 



jointed antenna- in length ; aquatic species. 

 IlYiiKoi'niLin.T-:. 

 kk. Palpi of ordinary length ; antennae usually 

 11-jointed; terrestrial spei i 

 /. Club of ant i toothed); 



mandibles strongly too 



II. Club of thin plates; hind legs set back. 



III. Antenna; clavate, but club nearly or quite 



filiform; small species (except Sil- 

 phidse). 

 in. Large insects: hind trochanters con- 



UOU8. 



sn.i a etles). 



mm. Small insects: elytra shorter than 

 abdoi 

 ,,. Head very small and retractile. 



IliMKRID.V.. 



„n. Head moderate. 



NlTIDl 



i Ing the whole abdomen. 

 lH:r.Mi:<Tii>-i: 

 Elytra usually covering less than half of the abdomen. 



Staphi 



ind tarsi 4-jointed : other tarsi 5-jointed. 



Head as wide as the thorax and attached to it by a neck; body somewhat soft. 

 p. Abdomen usually ending in a Long point; thorax having a lateral margin. 



Mol.I>EI.l.lI>-K. 



pp. Abdomen not pointed: side of thorax rounded. 



Hiu etc.). 



Head not as wide as thorax and generally partially inserted in it: body firm, oblong. 



Tbnebriontd l 



