ENTOMOLOGY 877 
Thriambeutes singularis Grinberg 
Thriambeutes singularis Grinberg, 1906, Zoolog. Anzeiger, XXX, p. 353, figs. 4-6 ( 9; Misahdhe, 
Togo). Austen, 1920, Bull. Ent. Res., XI, p. 152 (7). 
Thriambeutes flaviventris Enderlein, 1925, Mitt. Zool. Mus. Berlin, XT, 2, p. 310 (; Nkolentangan, 
Spanish Guinea). 
Bruetan Congo. — Stanleyville, one female and one male, as prey of Bem- 
bix bequaertt Arnold var. dira Arnold (H. Lang and J. P. Chapin). 
T. singularis is a fly of the West African rain forest, known from Togo, 
Southern Nigeria, Spanish Guinea, and the Belgian Congo. 
Orgizomyia Grinberg 
Orgizomyia Grinberg, 1906, Zoolog. Anzeiger, XXX, p. 349. Monotypic for Pangonia zigzag 
Macquart, 1855. 
Orgyzomyia Surcouf and Gonzalez-Rincones, 1912, ‘Essai Dipt. Vulnér. Venezuela,’ IJ, p. 109. 
Misspelling of Orgizomyia. 
Methoria Surcouf, 1909, Bull. Mus. Hist. Nat. Paris, XV, pp. 256 and 257. Monotypic for Pan- 
gonia zigzag Macquart, 1855. 
This genus contains only one species from Madagascar. 
Guyona Surcouf 
Guyona Surcouf, 1921, ‘Gen. Insect., Tabanidae,’ p. 140. Monotypic for Pangonia mesembrinoides 
Sureouf, 1908. 
This genus contains only one species, from Tanganyika Territory. 
Enderlein (1925, Mitt. Zool. Mus. Berlin, XI, 2, p. 307) separates Guyona 
from Orgizomyia and Thriambeutes on the strength of the shape of the subcal- 
lus; but this is an error. In all three genera the subcallus bearing the antennae 
is prominent. Surcouf describes it for Pangonia mesembrinoides as follows: 
“région subantennaire saillante, cylindrique, noire.” 
Triclida Enderlein 
Triclida Enderlein, 1923, Deutsch. Ent. Zeitschr., p. 544; 1925, Mitt. Zool. Mus. Berlin, XI, 
2, p. 328. Type by original designation: Triclida lurida Enderlein, 1923. 
Stypotriclida Enderlein, 1923, Deutsch. Ent. Zeitschr., p. 544; 1925, Mitt. Zool. Mus. Berlin, XT, 
2, p. 328. Monotypic for Bouvierella chopardi Surcouf, 1913. 
Triclidommisa Enderlein, 1923, Deutsch. Ent. Zeitschr., p. 544; 1925, Mitt. Zool. Mus. Berlin, 
XI, 2, p. 330. Monotypic for Triclidommisa hildebrandti Enderlein, 1923. 
Enderlein is perhaps justified in removing from Bouvieromyia the species 
in which the upper base of the third antennal segment forms no projecting 
tooth. His further subdivision of this group, based upon the presence or ab- 
sence of an appendix to the fork of the third longitudinal vein and upon the 
structure of the eyes in the male, appears to be artificial. 
As here defined, T’riclida comprises most of the species formerly placed in 
Bouvierella, some fourteen in all, distributed over the Malagasy Subregion (Mada- 
gascar, the Seychelles, and the Comoros). 
Bouvieromyia Strand 
Bouvierella Surcouf, 1909, Bull. Mus. Hist. Nat. Paris, XV, p. 176. Type by designation of 
Enderlein (1922): Bowvierella notata Surcouf, 1909. Enderlein, 1925, Mitt. Zool. Mus. Berlin, 
XI, 2, p. 327. Not Bouvierella Chevreux, 1900. 
