38 DIPTERA 



8. Genus PHONIOMYIA, Theobald 



Phoniomyia, Theobald, Mon. Culic. Vol. 3, p. 3n (igo3). 



Characters. — Head scales flat. Thoracic scales flat and spindle shaped, irregularly disposed; 

 scutellum with flat scales; metanotum with chaetae, no squamae. Palpi short in both sexes. Wing scales 

 broad, the lateral ones Taeniorhynchns-\\ke; the second long vein not carried past the marginal transverse. 

 Proboscis very long, longer than the whole body. 



Clearly distinct from Wyeomyia on accound of the broader wing scales and the greatly elongated 

 proboscis. 



Geographical distribution of species. 



i. P. longirostris, Theobald, Mon. Culic. Vol. 2, p. 275 (1901) (West hides, Brazil). — Piate 2, Fig. 1 1. 



Wyeomyia trinidadensis, Theobald, Mon. Culic. Vol. 2, p. 277 (1901). 



9. Genus RUNCHOMYIA, Theobald 



Runchomyia, Theobald, Mon. Culic. Vol. 3, p. 3ig (1903). 



Characters. — Head covered with flat scales all over with some upiight-forked ones behind in 

 line as in Jobloiia. Thorax with narrow-curved scales and broader flatter ones over the roots of the wings 

 and in front of the scutellum; scutellum and prothoracic lobes with flat scales ; metanotum with a tuft ot 

 chaetae. Abdomen with flat scales and a ventral apical tuft of bristles. Palpi short in the 9 1 apparently 

 of 2 segments. Proboscis very long in the 9' as ion §' as the whole body, scaly; basal joint of 

 antennae bristly, flagellum verticillate; clypeus nude; frons drawn out into a blunt spine. Legs 

 with hind tibiae dilated. Wings with rather broad scales; fork-cells long; cross-veins normal. 



This genus is closely related to Dendromyia but can be told by the long 9 proboscis, the 

 wings scales, and peculiar blunt projecting frontal process. The q* is unknown. 



Geographical distribution of species. — One species only described, but I have another 

 distinct one not yet examined. 

 1. R.frontosa, Theobald, Mon. Culic. Vol. 3, p. 3ig (igo3) (British Guiana). 



10. Genus WYEOMYIA, Theobald 



Wyeomyia, Theobald, Mon. Culic. Vol. 2, p. 267 (1901); Vol. 3, p. 3i8 (igo3). 



Characters. — Head covered with flat scales. Thorax with spindle shaped and flat scales; 

 scutellum and prothoracic lobes with flat scales; metanotum with chaetae. Palpi very small. Antennae 

 pilose and verticillate in 9 • Male very similar to 9 • Proboscis not as long as the whole body. 



Wings with the veins with narrowish lateral scales ; fork-cells long and narrow. Distinguished 

 from the preceeding and the following genera by the narrow linear vein scales and short proboscis. 



Geographical distribution of species. — Two species occur in this genus as now restricted 

 both from the West Indes and South America. 



1. W . grayii, Theobald, Mon. Culic. Vol. 2, p. 269 (1901) (West Indes). 



2. W . pertinans, Williston, Trans. Ent. Soc. Lond. 271 (1896) (Saint Vincent). 



GENUS UNCERTAIN 



3. Aedes {Wyeomyia) perturbans, Williston, Trans. Ent. Soc. Lond. p. 272 (1896) (Saint Vincent). 



