is somewhat of the type found in H. minuhis, but the struts of the 

 median lobe are definitely longer, and the anterior extremity of 

 the basal piece is remarkably spine-shaped, whence the name of the 

 species. 



17. — Helophorus fausti, sp. u. 



Latus, convexus, fortiter sculpturatus ; antennis, ])alpis ■pedihusque flavis ; 

 capite fhorneequ,e metallicis, ehjtris testnreis, parum maculatis. Long. 2f mm., 

 lat. li. 



Hah. : Russia or. (Orenburg, Faust). 



Resembling H. g7-anularis, but a little larger, more brightly coloured, and 

 differing in the form of the epipleuron, which is formed much as in H. spinifer, 

 from which species /atts<i departs strongly in shape. Palpi, antennae and legs 

 pale yellow, the palpi rather slender, the terminal joint of the labial pair specially 

 long and thin. Head and thorax cupi-eous rather than brassy. Thorax sliaped 

 much as in granularis, but with the median intervals a little de^jressed in front. 

 Elytra with sculptiire rather stronger than in granularis, without post-basal 

 depression ; the flanks distinctly visible on the underside, the true epipleuron 

 being very narrow at the level of the hind-coxae. 



This species also bears some resemblance to H. dorsalis Marsh. 

 (=quadrisignatus Bach in Cat. Zaitzev), but it is a considerably smaller 

 insect, differently coloui'ed, with very strong differences in the thorax. 



I have seen only two specimens, received from Herr J. Faust as 

 " granularis var. ? " One is certainly, the other probably, a female. 



The Champion collection contains a very similar form from 

 Pomerania sent by Reitter as "pumilio'"; it is allied to fausti, but 

 has a short, thick terminal joint to the labial palpi, and a somewhat 

 different thorax. This insect probably represents another nondescript 

 species. 



H. similis, described by Kuwert from Orenburg, is based on 

 imaginary characters, but the subsidiary points he mentions show that 

 it is neither /rt^ts^ I nor spifiifer. 



18. — Helophorus dorsalis Marsh., Steph. 



H. quadrisignatus Bach, Zaitzev Cat. Hydroph. 



This species is usually easily recognisable by the existence of several 

 large paler marks on the elytra. These marks are variable however, 

 and sometimes can be hardly detected. In that case the more than 

 usually smooth or shining thorax, and the large punctures of the elytra 

 permit of its identification. It Is a rare species everywhere, so that I 

 have seen but few specimens, but these indicate it as very variable in 



