ART. 10 TROPICAL AMERICAN" DIPTERA VAN DUZEE 41 



gin of fifth ventral segment. Posterior tibiae and tarsi normal, of 

 about equal length, first joint of hind tarsi about as long as the fol- 

 lowing two joints taken together Calypters, their cilia, the antennae, 

 and wings about as in the male. 



Described from five males and four females, all taken by J. M. 

 Aldrich, May 1, 192G, at El Salto, Antigua, Guatemala. 



Type.—UixlQ, Cat. No. 41052, U.S.N.M. 



The wing venation is almost the same as that of Liancalus vidua 

 Becker, and figured by him,- and described from a female taken in 

 Peru. These probably belong to the same genus, but vidua Becker 

 has black cilia on the calypters and also differs in other characters. 



Genus PARACLIUS Loew 



Paraclius Loew, Mon. North Amer. Diptera, pt. 2, 1864, p. 97. — Wheeler. 

 Proc. California Acad. Sci., vol. 2, 1899, p. 18, table of si>ecies. — 

 Aldeich, Biologia, Diptera, vol. 1, 1902, p. 337, table of Mexican species ; 

 Kansas Univ. Sci. Bull., vol. 1, 1900, p. 47, table of species; Trans. Amer. 

 Ent. Soc, vol. 30, 1904, p. 272, combined table of species of Pelastoneurus, 

 Paraclius, and Sarciontis. — ? Paracleius Bigot, Annales Soc. Entom. 

 France, 1859, p. 215. 



PARACLIUS VENUSTUS Aldrich 



Paraclius venustus Aldrich, Biologia, Diptera, vol. 1, 1902, p. 340. 

 Paraclius ovatus Van Duzee, Ent. News, vol. 25, 1914, p. 436. 



Seventeen males and females were taken by J. M. Aldrich; six of 

 them, April 14 and 16, at La Providencia, Guatemala ; the rest, May 

 7, at Quirigua, Guatemala. 



PARACLIUS NIGRIPES Aldrich 



Paraclius nif/ripes Aldrich, Kansas Univ. Sci. Bull., vol. 1, 1902, p. 78. 



J. M. Aldrich took one male. May 25, 1926, at head of Polochic 

 River, Alta Vera Paz, Guatemala; C. T. Greene took five, April 16 

 and 26, at Barro Colorado Island, Panama Canal Zone. 



PARACLIUS ALBONOTATUS Loew 



Paraclius alhonotatus Loew, Mon. of North Amer. Diptera, pt. 2, 1864, p. 

 102. 



C. T. Greene took two females at Barro Colorado Island, Panama 

 Canal Zone, April 17, 1926. 



PARACLIUS ARCUATUS Loew 



Paraclius arcuatus Loew, Neue Beitr., No. 8, 1861, p. 39 ; Mon. North 

 Amor. Dipt., vol. 2, 1864, p. 101. 



One female, taken by J. M. Aldrich, at Ingenio Railroad Station, 

 west of Guatemala City, April 28, 1926. 



- American Dolicliopodidae, 1921, p. 119, fig. 47. 



