Mar. I500. COQUILLETT : OnT NORTH AMERICAN OrTALID.E. 21 



NOTES AND DESCRIPTIONS OF ORTALID^E. 



BV 1). W. COQUILLETT. 



Amphicnephes fasciola, sp. no\ . 



Front blackish brown, the orbits whitish pruinose, their ujjper part and a small 

 ocellar triangle, polished bluish black, antennas black, the first two joints yellowish, 

 face on lower part polished black, the remainder opaque, white pruinose, next the 

 eyes narrowly yellowish, cheeks black, next the eyes yellowish, proboscis black, palpi 

 brown, occiput greenish black ; body dark green, more blackish green below, abdo- 

 men coarsely punctured, legs black, tarsi brown, first joint of the front ones and first 

 three joints of the others, light yellow ; wings hyaline mottled with brown, costal cell 

 brown, stigma, except its apex, yellowish hyaline, bases of marginal and submarginal 

 cells brown to slightly beyond apex of auxiliary vein, first basal cell brown except a 

 subhyaline spot near its first third, second basal cell hyaline except a brow^n spot be- 

 yond its middle, anal cell hyaline except a brown border not extending along the 

 sixth vein, axillary angle hyaline, discal cell brown except three hyaline spots, third 

 posterior cell hyaline except three brown spots along the fifth vein, balance of wing 

 hyaline, marked with three brown fasciee, the first extending from apex of stigma to 

 small cross vein, the second crosses the wing from before apex of second vein to apex 

 of the fifth, the third fills the apex of first posterior cell and lower two thirds of apex 

 of submarginal cell. I.ength, 4 mm. 



Habitat: Onaga, Kansas. 



A female specimen collected by Mr. F. F. Crevecoeur. Type 

 No. 4468, U. S. National Museum. 



Rivellia basilaris, sp. nov. 



Head reddish yellow, orbits and upper part of face whitish pruinose, upper part 

 of orbits, ocellar triangle and occiput, blackish blue, proboscis dark brown ; thorax 

 and scutellum dark green or bluish, abdomen coarsely punctured, dark green, three 

 basal segments yellowish, the third tinged with green in the middle ; legs brown, 

 femora, except toward their apices, and first two joints of middle and hind tarsi, light 

 yellow ; wings hyaline, a vitta and three crossbands, brown ; the vitta extends from 

 base of wing through first basal cell to the first cross-band, and fills costal cell to 

 apex of auxiliary vein, bases of marginal and submarginal cells slightly farther, whole 

 of first basal cell and encroaches on the discal ; the first band extends from apex of 

 stigma to fifth vein, passing over the small crossvein ; the second extends from a short 

 distance beyond apex of first vein to apex of fifth, passing over the hind crossvein ; 

 the third begins at upper end of the second and borders the apex of wing to tip of 

 fourth vein, the subapical hyaline portion extends nearly halfway between the third 

 and second veins. Length, 4 mm. 



Habitat: Colorado and Baldwin, Kansas (C. S. Parmenter). 



Three male specimens. Type No. 4469, U. S. Nat. Museum. 



