508 PROCEEDINOS OF THE ^^ATIONAL MUSEUM. vol.43. 



longer thorax and comparatively shorter head. The general color of 

 glacialis is brownish yellow with the abdomen darker, the legs are pale 

 yellow and long, the hind femora being thicker than either of the other 

 pairs; the antennse are large, with very distinctly pubescent, almost 

 plumose arista ; the first abdominal segment is very short, the second 

 about one- third the length of entire abdomen, the fourth slightly longer 

 than the third, and all segments covered with short hairs which are only 

 slightly longer on lateral and posterior margins, and noticeably so on 

 lateral posterior angles of fourth and fifth segments; spurs on mid 

 and hind tibise distinct though not large, hind metatarsi with six 

 transverse rows of short strong bristles, which give the whole joint the 

 appearance of being toothed when viewed from the side. 



Length, fully 1 mm. 



Two females, labeled "Active on the ice, Jan. 1874," Tyngsboro, 

 Massachusetts. (F. Blanchard.) 



PULICIPHORA NITIDA, new species. 

 Plate 40, fig. 4. 



Female. — Head subquadrate, onl}" slightly produced in front, shin- 

 ing yellow, with very minute bristles, and the short hairs extremely 

 weak on disk, the two bristles on anterior edge of frons small, the 

 usual pair in front of anterior ocellus indistinguishable, no trace of the 

 posterior lateral pair, though this may be due to the slight falling in 

 of head laterally, antennae yellow, of good size, arista long and almost 

 plumose, palpi large and strongly bristled; thorax shining yellow, 

 concave anteriorly and posteriorly, broader than head, rounded lat- 

 erally, narrower posteriorly, with two long lateral marginal bristles 

 at beyond middle, and four nearly equidistant on posterior margin, 

 pubescence on anterior lateral margins of thorax very thick, long, and 

 pale in color; abdomen shining brown, oval in shape, first segment 

 very short, second segment nearly one-third the length of entire abdo- 

 men, third, fourth, and fifth segments of equal length, the latter with- 

 out the broad semicircular dorsal slit so noticeable in occidentalis and 

 horinquensis, remaining segments membranous, all segments with 

 very minute soft hairs; legs yellow^, the hind pair strong, hind me- 

 tatarsi with five transverse rows of short bristles, tibial end spurs 

 microscopic. 



Length, 0.75 mm. 



One female, Cacao, Trece Aguas, Alta Vera Paz, Guatemala, April 

 19, 1906 (Schwarz and Barber). 



Genus ECITOMYIA Brues. 



Only a single species is described in this genus, namely, wheeleri 

 Brues, from Texas. It is unrepresented in the collection. Occurs in 

 nests of Eciton cxcum Latreille. 



