TACHYTES. 63 



silvery hair on the lower side, the sides also with a silvery pile, the top almost glabrous ; 

 first joint a little longer than the second and third joints united, the second half the 

 length of the third. Head large, and wider than the thorax, finely and closely punc- 

 tured, opaque ; the front, cheeks, face, and clypeus, and behind the lower part of the 

 eyes, covered with a close, moderately long, silvery pubescence ; the vertex covered with 

 long fuscous hair. Clypeus transverse; mandibles reddish, shining, impunctate, the 

 extreme base covered with silvery pubescence, the other part with a few scattered hairs. 

 Eyes large, converging at the top, where they are separated by about the length of the 

 third antennal joint. Above, and touching the lower ocellus, is a shining impunctate 

 circle, and from the ocellus runs a shallow shining furrow. Thorax opaque, minutely 

 and closely punctured ; the pronotum, the sides and the middle segment of the meta- 

 notum covered with rather long silvery hair ; the rest of the thorax with a dull silvery 

 pile. Metanotum with a distinct furrow, which ends in a pear-shaped hollow, the 

 middle segment with a wider furrow. Abdomen aciculated, the segments with a broad 

 band of silvery hair at their apices, the other parts of them with a shorter pile. Pygi- 

 dium covered with a dense golden-fulvous stiff pile and with a few longish hairs ; the 

 apex rounded. The ventral segments are pale at the edges, where there is a fringe of 

 fulvous pile, aciculated, and with some scattered punctures ; the extreme apex bears 

 rather long fulvous hair. Legs covered with a short dense silvery pile ; the tibial spines 

 are pale, the hair-fringe on the spurs and metatarsus fulvous, the spurs being pale 

 fulvous. 



J 



6. Tachytes ferrugineipes. (Tab. IV. fig. 22, s .) r " x ° c c 



Niger ; pedibus rufis ; capite thoraceque longe fulvo-pilosis ; alis hyalinis, basi fere flavo-hyalinis. $ . 

 Long. 13 millim. 



Eab. Panama (Boucard). 



Antennae shorter than the thorax ; the scape covered with long pale fulvous hair ; 

 the flagellum with a microscopic pile; the third joint nearly one quarter longer than 

 the fourth. Head from below the ocellus densely covered with long fulvous hair, the 

 hair hiding the surface completely ; the vertex alutaceous, opaque, densely covered with 

 fuscous hair, and depressed in the centre. Eyes at the top separated by a little more 

 than the length of the third antennal joint. Apex of the clypeus rather sharply 

 rounded, slightly projecting. Basal half of the mandibles ferruginous. Thorax covered 

 all over with rather long fulvous hair, but more sparsely so on the mesonotum, the 

 latter alutaceous and minutely punctured. Tegulae reddish. Abdomen elongate, covered 

 with a short, dense, pale pile ; the segments at the apex fringed broadly with pale 

 fulvous hair. Legs covered with a pale pile ; the anterior and intermediate femora are 

 black to near the apex, the posterior pair broadly so at the base. 



