21 8 SUPPLEMENT. 



of the wings, but not to any great extent : the distal end is more broadly marked, and 

 the middle spot is geminate. The prefurca of the fourth vein is short. The length is 

 somewhat less— 3 millim. ; of the antenna? 10 millim. I am rather inclined to suspect 

 that the species may prove to be inseparable from M. inconcinna, Loew, from the 

 District of Columbia. 



PLATYURA. 



Platyura, Meigen, in Illiger's Magazin f. Ins* ii. p. 264 (1803). 



1. Platyura pictipexmis. 



Platyura pictipennis, Willist. Trans. Ent. Soc. Lond. 1896, p. 257, t. 8. f. 10 '. 



Hab. Mexico, Vera Cruz, Chilpancingo in Guerrero (H. H. Smith). — Antilles, 

 St. Vincent l . 



Two specimens. The female agrees with the description. The male, with a much 

 narrower abdomen, is marked differently : it has the abdomen black, with the first 

 segment, the distal margins of the second, third, and fourth, and the whole of the 

 fifth, yellow. 



2. Platyura elegantula, sp. n. (Tab. IV. fig. 2, $ .) 



$ . Head yellow, the upper portion, to a line just in front of the ocelli, shining black. Palpi and tip of the 

 proboscis brownish. Antenna? brown, the first two joints yellow ; in length equal to that of the meso- 

 notum. Mesonotum yellow, with three coalescent black stripes, of which the lateral ones are abbreviated 

 in front ; just above the root of the wings the more abundant black hair gives the appearance of a 

 slender black spot. Pleurae yellow, the mesosternum and the lower part of the metasternum brown. 

 Metanotum brown, the sides silvery in some lights. Scutellum blackish. Abdomen brownish ; the 

 anterior part of the first, third, and fourth segments reddish yellow ; venter almost wholly of the latter 

 colour. Coxae and femora yellow ; tibiae and tarsi brownish or blackish. Wings strongly tinged with 

 brownish-yellow, the distal portion clouded with brownish ; anterior branch of the third vein oblique, a 

 little shorter than the section of the costa beyond the tip of the first vein ; auxiliary vein strong, 

 terminating nearly opposite the origin of the third ; prefurca of the fourth vein a little more than half 

 the length of the first section of the third. Length 8 millim. 



Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 



One specimen. This species is nearest allied to P. elegans, Coq., from Florida. 



large amount of additional material from Mexico, from our collector Mr. H. H. Smith. The Mycetophilidaa 

 Bibioiiidae, Simuliidae, Culicidae, Chironomidae, Tipulidae, Ehyphidae, Stratiomyidae, Tabanidae, Leptidse, 

 Acanthomeridae, Midaida?, Nemestrinidae, Bombyliidae, Therevidae, Cyrtidae, and Asilidae have been worked 

 out by Prof. S. W. Williston, of the University of Kansas, and the Dolichopodidae by Prof. J. M. Aldrich 

 of the University of Idaho. The whole of their MSS. is now in our hands, and we have decided to publish 

 it as a continuation to Baron Osten Sacken's work. — Ed. 



