1696.] of the Coleoptcra of South Africa. 591 



Tribe BEMBIDIIDES. 



Mentum with a median tooth moderately sharp and occasionally 

 slightly bifid at tip, lateral lobes a little slanting and much longer 

 than the median tooth ; ligula broad and sinuate at tip ; paraglossae 

 slender, adhering to it and longer ; penultimate joint of palpi club- 

 shaped, the last one small, subulate, seldom conical ; mandibles 

 falcate, sharp, the outer lobe biarticulated ; labrum transverse, 

 sexsetose ; head not narrowed behind ; eyes very large, or moderately 

 large, sometimes absent {Scotodijpnus) , and with two supra-orbital 

 setae ; antennae filiform ; prothorax subquadrate or cordiform, and 

 with the posterior angles sharp ; elytra oblong, oblongo-ovate or 

 ovate, striate, with the dorsal striae often obliterated ; legs slender ; 

 claws simple ; the two basal joints of the anterior tarsi dilated, the 

 basal one elongato-quadrate and slightly squamulose underneath. 



Synopsis of Genera. 



Eyes large ; anterior tibise not obliquely truncate at apex. . . . Bemhidium. 



Eyes moderate ; anterior tibiee obliquely truncate at apex . . . . Tachys. 



Eyes entirely obliterated Scotodipnus. 



Eyes with a few facets . . . . . . , . . . Heterillus. 



Gen. BEMBIDIUM, Latreille, 

 Hist. Nat. Ins., viii., 1804, p. 221. 

 NoTAPHUS, Megerl. 



Mentum with a median tooth ; ligula and paraglossae normal ; 

 labrum transverse, very little sinuate at tip, and with six setigerous 

 punctures ; head elongate, a little broader behind the eyes than in 

 front ; eyes large, and with two long, supra-orbital setae ; antennae 

 filiform ; prothorax cordiform or subcostate, and with a deep punc- 

 ture in the posterior angle, which is very sharp and slightly recurved; 

 elytra oblong or oblongo-ovate, punctato-striate, with a deep punc- 

 ture on each side of the base of the scutellum ; legs slender. 



The genus is represented in Europe, Asia, India, Ceylon, North 

 and South America, the Malay Archipelago, and Africa (Senegal, 

 Zanzibar mainland, Abyssinia). 



Synopsis of Species. 

 Prothorax cordiform, much narrowed behind ; elytra oblong. 



Elytra olive-green, tessellated with elongated yellowish patches . . variegatum. 

 Elytra olive-green, with an apical transverse yellowish band . . sobrintwi. 

 Prothorax ampliate laterally in the middle, not much narrowed 

 behind ; elytra elongato-ovate. 



Elytra flavescent, with a sutural, olive-green, longitudinal band 

 and two transverse ones . . amoenulnm. 



