F. R. COLE ' 19 



are extraordinarily developed, being contiguous in front of the 

 thorax; thus differing from all other Diptera. The abdomen is 

 conical in shape. 



The venation is quite simple and is put between Ogcodes and 

 Acrocera by Verrall, who described the venation of Philopota 

 truquii Bellardi. He was not sure of some of the veins. The vein 

 following the second longitudinal is incomplete and may be the 

 upper branch of the third vein, and in that case there is no discal 

 cell. The almost complete branch of the fourth vein can be made 

 out, and the fifth longitudinal and anal veins. Verrall considers 

 the cross-vein a beginning of the upper branch of the fourth vein. 

 The two basal cells are not distinct. 



Type. — P. conica Wiedemann from Brazil. 



Synopsis of Species 



1 . Black species, with yellow markings and silvery-white pubescence 2 



Dark brown species, bronze pilose truquii Bellardi 



2. Strongly marked with yellow on thorax and abdomen . . lugubris Williston 

 Species with few yellow markings, abdomen black except narrow yellow 



lateral margins dolorosa Williston 



Philopota lugubris 



Philopola lugubris Williston, Biologia, Dipt., p. 297. 



"Deep black with yellow markings. Frontal triangle silvery-white pubes- 

 cent. Antennae black. Labium short, black, the proboscis otherwise light 

 yellow. Prothorax above yellow, its median Une brown. Mesonotum and 

 scutellum brassy black, finely punctulate, moderately shining; on either side 

 of the mesonotum in front a yellow spot connecting with the yellow of the 

 pronotum; post-alar callosities yellow. Mesopleura silvery pubescent. 

 Abdomen black, silvery pubescent; first four segments with an interrupted 

 yellow band on the posterior part, that on the second forming two large sub- 

 crescentric spots, the others narrower; on the fifth segment a narrow yellow 

 hind border; all these segments with the posterior angle broadly yellow. 

 Femora black; their tip, the tip of the tibiae, and the basal joints of the tarsi, 

 yellow; tibiae and tarsi otherwise reddish or brownish. Wings tinged with 

 yellowish. Length 6-7 mm. 



"Hab. Mexico, Xucamanatlan and Amula in Guerrero at 6,000 to 7,000 feet 

 (H. H. Smith). 



'''Four specimens. In one of them the yellow on the margin of the fourth 

 and fifth abdominal segments is wanting. Although the markings are very 

 similar to those of P. truquii and P. conica, the present species cannot be iden- 

 tified with the former on account of its black color, nor with the latter by reason 

 of yet more pronounced dilTerences." 



TRANS. AM. ENT. SOC, XLV. 



