BEMBIDIIN.E 215 



therewith. The two following, however, bear a closer external re- 

 semblance to Tachys, though completely lacking the peculiar and 

 highly characteristic foraminiform cavities of the mentum. 



Tachyta Kirby 



Tachymenis Mots, (pars) 



The body in this genus is decidedly depressed and uniformly 

 black, the integuments not very thin as in Tachys, but denser and 

 always strongly and distinctly micro-reticulate above, the coarse 

 reticulations of the elytra but slightly transverse and never in wavy 

 lines; so no appearance of opalescence is ever observable. The 

 head is moderate or rather small, with very moderate, rather coarsely 

 faceted and feebly setulose eyes and narrow, very widely separated 

 sulci near them; the antennae are relatively short but not monili- 

 form and have the second joint much shorter than the third, differ- 

 ing greatly also in this way from Tachys. The mentum is broadly 

 and feebly bi-impressed, but exhibits no trace of the singular deep 

 foraminiform foveae of Tachys and Pericompsus; the mental sinus 

 is not large and the sharp triangular tooth is well developed; the 

 palpi are moderate and the last segment of the outer maxillary lobe 

 tapers gradually to a fine apex. The hind thoracic angles are dis- 

 tinct, setigerous as usual and not reflexed; sometimes there is an 

 obvious carina; the subbasal impression is never sulciform as it is 

 in Tachys. The elytra are obl(5ng, always with a number of fine 

 and sometimes feebly punctulate striae, the sutural recurved at 

 apex, the long deep recurvature lying very near the posterior part 

 of the lateral stria, which is only partially or imperfectly inter- 

 rupted at the middle; the dorsal foveae are much more widely sep- 

 arated than in Tachys, lying nearer the base and apex and are on 

 the fourth stria. The anterior tarsi of the male have the two small 

 and slightly inflated basal joints angularly produced internally. 



A careful examination of the large material in my collection shows 

 that there are a considerable number of species, besides the two 

 already recorded ; on actual comparison with a European specimen 

 of nana Gyll., I am convinced that it does not occur in our fauna. 

 The nine species at present before me, including nana, may be known 

 as follows: 



