2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. DO 



pair with long black hairs posteriorly, posterior femora not shining 

 ventrally but glossy posteriorly; all tibiae with two dorsal rows of short 

 black bristles, antero-ventral surface of fore pair with short golden 

 pilosity, hind tibiae thickened on apical half, the two dorsal rows of 

 short bristles widening for a short distance and then closing together, 

 leaving an oval flat surface at middle of tibiae, the hairs on anterior 

 surface of dilated portion are noticeably longer than is usual in this 

 genus being as long as diameter of tibiae ; three or four long hairs are 

 present on last joint of tarsi, the claws are yellow with fuscous apices. 

 Wings as in acuticornis. Halteres brownish yellow, knob black. 



Female. — Eyes separated by an almost parallel-sided stripe, which 

 is opaque brown on upper two-thirds and silvered on lower third ; 

 face silvered, becoming gradually slightly broader as it descends ; 

 antennae slightly more rounded than in male and third joint brown. 

 Ovipositor of moderate length, reaching to slightly beyond apex of 

 third dorsal segment, viewed laterally, the attenuated apical portion 

 longer than the black globose base. Legs rather darker than in male 

 and armed in somewhat similar manner, though the long hairs on the 

 hind tibiae are not so conspicuous and the terminal tarsal hairs are 

 much shorter. Otherwise as male. Length 2]/ 2 mm. 



Locality. — Two males and one female. Taboga Island, Panama, 

 Feb. 22-23, 1912 (August Busck). 



Type.— Cat. No. 151 19, U. S. Nat. Mus. 



Very distinct from any described American species in color and 

 armature of legs as well as in abdominal markings. 



PIPUNCULUS ACUTICORNIS, new species 



Male. — Eyes confluent for at most as long as length of f rons ; 

 frons silvered, most distinctly on lower portion, slightly raised in 

 center ; face silvered, parallel-sided, as broad as frons at above an- 

 tenna- ; occiput silvered, as broad at ocelli as at lower margin of eyes ; 

 antenna' black, third joint yellow, elongate acuminate, arista yellow 

 at base of swollen portion, the remainder brown ; proboscis and palpi 

 yellow. Mesonotum black, shining, gray-brown dusted, especially 

 anteriorly ; humeri yellow ; a few extremely short hairs represent the 

 normal discal rows and the humeral hairs are also weak; pleurae 

 black, shining, grayish dusted, anterior spiracle yellow ; scutellum 

 shining black, slightly brown dusted. Abdomen sub-opaque brown, 

 all segments with distinct hind-marginal grayish fasciae, the one on 

 basal segment complete, those on other segments indistinctly inter- 



