22 Proceedings of the Biological Society of Washington. 



Eufabriciopsis new genus. 

 Genotype, Gymnomma quadrisetosa Coquillett, 1902, Proc. U. S. N. M. 

 XXV. 120. 



Euhilarella new genus. 

 Genotype, Gymnoprosopa fulvicornis Coquillett, 1895, Jn. N. Y. Ent. 

 See. III. 106; Rev. Tach. 198 {1897— Hilarella). 



Eusenotainia new genus. 

 Genotype, Hilarella rufiventris Coquillett, 1897, Rev. Tach. 129. 



Xanthocera new genus. 

 Genotype, Xanthocera clistoides Townsend new name for Hyalurgus 

 (Macquartia) johnsoni Coquillett, 1897, Rev. Tach. 64 (nee. Macquartia 

 johnsoni Townsend, 1892, Can. Ent. XXIV. 81)— Holotype labeled by 

 Coqt. as above, loc. Algonquin, Ills.— Type No. 19137 U. S. N. M. $ . 



Xenadmontia new genus. 

 Genotype, Hypostena degeerioides Coquillett, 1895, Jn. N. Y. Ent. Soc. 

 III. 58; 1897, Rev. Tach. 54 (Admontia). 



Neohypostena new genus. 

 Genotype, Hypostena gracilis Coquillett, 1904, Proc. Ent. Soc. Wash. 

 VI. 93. 



Jurinodexia new genus. 

 Genotype, Hystrisiphona bicolor Giglio-Tos, 1893 and 1894, Ditteri del 

 Messico, III. 54. f. 17; Boll. Mus. Zool. Anat. Univ. Torino VIII (]893). 



Megapariopsis new genus. 

 Genotype, Megaparia opaca Coquillett, 1899, Jn. N. Y. Ent. Soc. VII. 218. 



Melinocera new genus. 

 Genotype, Meriania chalybaea Coquillett, 1902, Proc. U. S. N. M. 

 XXV. 119. 



Trochiiodexia new genus. 

 Genotype, Mochlosoma anale Giglio-Tos, 1893 and 1894, Ditteri del 

 Messico, III. 55; Boll. Mus. Zool. Anat. Univ. Torino VIII (1893). 



Calliphoropsis new genus. 

 Genotype, Musca macularis Walker, 1859, Proc. Linn. Soc. (London) 

 Zool. III. 104. 



Opsophasiops new genus. 

 Genotype, Myiophasia Jlava Coquillett, 1900, Proc. Linn. Soc. N. S. 

 Wales, for 1900, 390 (TD1418, 1419). 



Arctophyto new genus. 



Genotype, Paraphyto borealis Coquillett, 1900, Proc. Wash. Acad. 

 Sciences II. 439. 



To this genus belongs also Arctophyto wickhami Townsend new name 

 for Paraphyto (Trixa) gillettei Coquillett, 1897, Rev. Tach. 122 (nee 

 Trixa gillettei Townsend, 1892, Can. Ent. XXIV. 68)— Holotype labeled 

 by Coqt. as above, loc. Laggan, Alberta (Wickham) — Type No. 19138 

 U. S. N. M. 9 . 



