1916.] 127 



depression on the elytra, and were it not for that I should have preferred 

 the aeneipennis group for it, and I anticipate that will prove to be itB 

 natural position. 



The aedeagus (fig. 43) is not very near that of any other Helo- 

 plinrus. With regard to the name of the species we meet with great 

 diillculties owing, I suspect, to errors of identification made by both 

 Eey and Kuwert. The name puncticollis was proposed by Baudi, but 

 the insect was not described by him. I have one of his specimens from 

 Sardinia before me, and it is H. aritzuensis. Eey also received the 

 species from Baudi, but associated it wrongly with glacialis, which it 

 is much like, and at that time the genera and species were generally 

 confused in collections. Kuwert's description of corsiranns applies 

 to the Vizzavona insect, and the name he gave to it is available, 

 though he subsequently abandoned it as a synonym of imncticollis 

 Key (which, when found in Corsica, was called insularis Eeiche). I am 

 doubtful as to the synonymy given by Deville (Cat. Crit. Col. Corse, 

 p. 184) under the heading of " puncticollis " ; but if his puncticollis be 

 really corsicanus, it would appear that the species is really plentiful in 

 Corsica. 



27 .— Helophorus discr spans Eey. 



This is placed by Zaitzev and (3-anglbauer as a synonym of griseus 

 (= minuttis Fabr.), but it is a distinct species. It may be separated 

 from minufus by the delicate lateral margin of the thorax, which does 

 not stand out laterally and is not definitely yellow ; the thorax is rather 

 more narrowed behind, and the granulation on the median intervals is 

 not quite effaced on the disc. The flanks of the elytra are sHghtly 

 visible, as in some aeneipennis. The aedeagus (fig. 44) is remarkable : 

 it is constricted at the junction of the basal piece with the lateral lobes, 

 and the latter are consequently a good deal rounded externally ; the 

 median lobe is very peculiar, the struts being remarkably long, while 

 the barrel is correspondingly reduced in length so as to be only one- 

 fourth of the length of the struts. 



Pyrenees (Pandelle) . I received examples of this species, and so 

 named, from M. Pandelle forty years ago ; as Eey described H. dis- 

 crepans from specimens sent to him by the same careful entomologist, 

 there is no doubt as to the determination. Moreover Eey mentions 

 the delicate thoracic margin. 



H. discrepans is another species very troublesome to place ; it is 

 not only confounded with minutus, but is also, I believe, really most 



