52 Journal New York Entomological Society. [vol vi. 



in o hers very indistinct. When distinct these spots are usually evenly rounded on 

 whole hinder border, and often reach to but little short of hind margin of segment. 

 Fourth segment usually yellow on anterior lateral portion, often indistinct in dried 

 specimens. Pubescence of fourth segment wholly white ; of third white on front 

 margin, very narrowly on median line but covering about half the length of segment 

 on sides ; pubescence of second white on about anterior half, somewhat irregularly 

 following the yellow markings. Rest of pubescence of abdomen black. Pubescence 

 of venter white, except near apex. Legs yellowish-brown, the knees yellowish, the 

 tarsi clear brownish-yellow except last two joints (and sometimes tip of next) black. 

 Second vein strongly sinuous near extremity. Wings hyaline, narrowly tinged with 

 yeWow along whole costa ; less than the oblique apical third yellowish fuscous, with 

 brown cloud on section of second vein at extremity of marginal cell, and a subhyaline 

 space before it. A lighter space in end of first posterior cell. Heavy clouds on 

 anterior crossvein, the crossveins at tip of second basal cell, and the origin of third 

 vein. Brown cloud of stigma connected with that of anterior crossvein by a fuscous 

 patch. Clouds of origin of third vein and tip of second basal cell are also connected 

 by fuscous. Fuscous of tip narrowly and irregularly extended along inner margin ot 

 wing. The proximal boundary of the apical fuscous of the wing extends approxi- 

 mately from the end of the dilute stigma obliquely across to the end of second 

 posterior cell. 



Eleven $ s, and twenty-four $ s, as follows : All the $ s June 24, ex- 

 cept one June 28 : all the $ s June 24, except two June 25, one June 28, 

 and one July 3, near Brownsville, Texas. All on flowers of Lippia 

 lanceolata Michx., except two 6*s (June 25) which were hovering in 

 air under shade of a large tree in woods. Others were seen hovering in 

 this manner and poised in the air, in company with them. In copula 

 June 24. 



This species belongs to the group of V. pusilla, satur, etc. The ap- 

 ical fuscous of the wing has the same inner boundary shown in the figure 

 of pusilla given by Williston (Synopsis Syrph. pi. 6, fig. 3). It is one 

 of the short, stout species, with the abdomen subround, and wider than 

 the thorax. 



conopim;. 



Zadion albonotatum Towns. 



The species was described in Section I. It is on the order of Z. 

 splendens Jaeun., being practically, so far as effect goes, a melanistic 

 and intensified color form of that species. It is, however, a perfectly 

 good spec ; es, being quite distinct in its emphatic coloring. 



