74 Psyche [April 



denticles. Moreover, the maculation of the abdominal segments 

 is not in the form of small setigerous spots. 



Minettia nubila sp. nov. 



9 • Length 4 mm. Body with antennae, mouth-parts, legs and hal teres entirely 

 flavous, wings hyaline with yellowish tinge, the cross-veins broadly blackish. Third 

 antennal joint oval, one-half longer than deep, the black arista moderately long- 

 plumose, the hairs of the lower side nearly as long as the upper. Front slightly 

 longer than broad, not shining; ocellar bristles long, located on a line with the pos- 

 terior ocelli but in back of the front ocellus; hairs of lower facial ridge minute; 

 postverticals strong. Thorax lightly dusted, subshining, not vittate, thoracic 

 bristles relatively strong, four dorsocentrals, the foremost much in front of suture- 

 four rows of acrostichals, the middle rows setiform, two sternopleurals, scutellar 

 bristles convergent. All the abdominal segments but the first with submarginal 

 rows of bristle-like hairs. Brown cloud of anterior cross-vein extending along the 

 third and fourth veins to form an H-shaped spot, brown of posterior cross-vein 

 similarly extending on the fourth vein, but not on the fifth, so that its outline is 

 narrowly triangular. 



One specimen, collected near Chicago, Illinois, August 10, 1901. 

 Another typical specimen in Professor Aldrich's collection is 

 labeled Lawrence, Kansas. 



VAR. A female specimen from Hood River, Oregon, in Pro- 

 fessor Aldrich's collection differs in having the bristles reduced in 

 size. The genitalia are small, with the lamella? of the ovipositor 

 blackish and densely dark-pilose. The front is relatively a little 

 broader and the clouds of the cross-veins are less distinct. 



Minettia ordinaria sp. nov. 



cf. Length 4 mm. Dull testaceous including the appendages; wings hyalinei 

 the cross-veins with faint clouds. Third antennal joint broadly oval, the black 

 arista with very short pubescence. Front slightly longer than broad, opaque with 

 reddish pollen, except that the orbital bristles arise from spots of yellowish-gray 

 pollen. Ocellar bristles moderate in length, spaced apart a little more than the 

 width of the front ocellus, the lesser ocellar bristles distinct; occipital setulae and 

 those of lower facial ridge conspicuous, the foremost like an oral vibrissa. Thorax 

 opaque, not vittate; setulae of thorax well developed, forming six acrostichal rows; 

 mesopleurae with numerous setulae in addition to the usual macroehaeta; three 

 dorsocentrals, all postsutural. Marginal setae of third and fourth abdominal seg- 

 ments as long as the segments: hypopygium, small, the lamellae retracted. Tibial 

 spurs of moderate length. Penultimate section of fourth vein two-thirds the length 

 of the ultimate section. 



One specimen, collected in 1897 at Chicago, Illinois, and another 

 in Professor Alfdrich's collection taken at Lawrence, Kansas. 



