184 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.48. 



Genus STURMIA Desvoidy. 

 STURMIA ALBIFRONS Walker. 



One female from mesa. 



STURMIA BAKERH Coquillett. 



Two males from summit of Eagle Tail Mountain resting on pinon 

 pines. 



STURMIA INQUINATA v. d. Wulp. 



One specimen from mesa August. 



Genus TACHINA Meigen. 

 TACHINA MELLA Walker. 



Reared from Malacosomafragilis Strand on scrub oak July 17, 1913, 

 at Koehler, by Mr. Wildermuth, also from Hemileuca oliviae Cockerell 

 by Messrs. Ainslie and Wildermuth. 



Genus PHORICHAETA Rondoni. 

 PHORICHAETA CINEROSA Coquillett. 



One specimen from flowers on mesa August 10. 

 Genus ARABA Desvoidy. 



ARABA TERGATA Coquillett. 



Two females from bottom of arroyo in mesa. 



Genus GONIA Meigen. 

 GONIA CAPITATA De Geer. 



Six large light colored specimens from vicinity of streams and ponds 

 August 1-8. 



Genus CHAETOGAEDIA Brauer and von Bergenstamm. 



CHAETOGAEDIA CREBRA v. d. Wulp. 



One female from summit of Eagle Tail Mountain August 3. 



Genus NEODICHOCERA, new genus. 



Closely related to Diochocera, Williston. 



Palpi slender but otherwise normal, face bearing a row of rather 

 strong macrochaetae extending from root of antennae to a point 

 slightly below the lower corner of eye. Tip of apical cell ending dis- 

 tinctly before tip of wing, eyes strongly hairy (in male). Posterior 

 end of hind cross vein nearer margin than to small cross vein. Dis- 

 tance from bend of fourth vein to posterior cross vein nearly one-half 

 as great as that from small cross vein measured along fourth vein. 

 Facial ridges bristly on lowest fifth; antennae inserted at a point 

 opposite upper corner of eye. Last segment at most eight times 

 length of second, divided into three lobes, the inner one the stoutest 

 and bent outward in a right angle at its apical fifth. Male destitute 

 of orbital bristles. Penultimate joint of arista in male at least four 

 times longer than broad, first joint subequal to it, attached to base of 

 middle lobe of third antennal joint. Other head characters as shown 

 in plate 7, figures 8-9. 



Type of the genus. — Neodichocera tridens, new species. 



