ZooL— Vol. II.] WHEELER— DOLICHOPODID^. 27 



28. Medeterus calif orniensis, sp, nov. 



Plate II, Figs. 44 and 45. 



Male. Length 3-3.5 mm.; length of wing 3-3.5 mm. Proboscis and palpi ' 

 black, shining. Face dull metallic green, scarcely shining, above the suture with 

 some yellowish dust. Antennae black, arista subapical, as long as the face 

 and the proboscis. Front opaque with gray dust. Postocular cilia yellowish 

 white. Thorax opaque light gray with three yellowish brown vittae extend- 

 ing back only to the anterior edge of the prescutellar depression. Bristles 

 on the thorax black. Scutellum subopaque, gray, with four black bristles. 

 Abdomen subopaque greenish gray with yellowish white hairs on the seg- 

 ments. Hypopygium rather large and swollen, shining black, except on the 

 left side near the base, where the scale-like overlapping elements are sub- 

 opaque and dusted with gray like the abdomen. Appendages rather long, 

 brownish, the hairy posterior pair somewhat geniculate. Pleurae subopaque, 

 gray. Bristles above the fore coxse white. Coxae dark brown or black, the 

 fore pair with black bristles on their anterior surfaces. Trochanters and 

 basal two-thirds of the femora dark piceous brown, tips of femora, the tibiae 

 and bases of metatarsi yellowish, tips of metatarsi and the remaining tarsal 

 joints infuscated. Hind metatarsus narrowed at the base where it bears a 

 small tooth-like projection on the inner side. Second joint of hind tarsus 

 two and one-half times as long as the metatarsus. Wings clear, hyaline, with 

 yellowish brown veins that grow lighter proximally. Third and fourth veins 

 parallel and rather close together at their tips. Posterior cross- vein of about 

 the same length as the distal segment of the fifth vein. Halteres whitish 

 with darker pedicels. Tegulae pale with white cilia. 



Female. Length 4-5 mm.; length of wing 3.5-4 mm. Coloring the same 

 as that of the male. Ovipositor long, exserted, dark brown. Hind meta- 

 tarsus lacking the small tooth-like projection on the inner side of its base. 



Four males and six females taken at Palo Alto, Calif., 

 October 20, 1894, ^Y ^^' R* W. Doane and furnished me 

 by the University of Kansas. 



29. Medeterus cyanogaster, sp. nov. 



Male. Length 2-2.25 mm.; length of wing 2.5 mm. Proboscis piceous, 

 with yellow hairs. Palpi, face and front metallic green or black, covered 

 with gray dust. Antennae short, first and second joints yellow, third joint 

 broader than long, black, distinctly pilose; arista naked, inserted in an 

 indentation near the apex of the third joint. Postocular cilia white. Thorax 

 and scutellum bluish green, but so thickly covered with light gray dust that 

 the ground-color is invisible. Bristles on the thorax prominent, black. Scu- 

 tellum with four bristles. Abdomen metallic blue, somewhat greenish and 

 dusted with gray on the two basal segments, but becoming a deep indigo 

 color towards the insertion of the hypopygium. Hairs on the abdominal 

 segments rather sparse, black. Hypopygium moderately long and rather 



