52 
[Vol VI. 
Journal New York Entomological Society. 
in o hers very indistincL 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 
yeliow 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 
aotedor 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 9 s, and twenty-four <£s, as follows : All the 9 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 
laneeolata Michx., except two $ 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. 
CONOPIDiE. 
Zadion albonotatum Toivns. 
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. 
