94 Psyche [Sept.-Dee. 
yellow; the vittae upon the third and fourth segment are re- 
duced. 
Holotype: a male, Villarica, Paraguay, X (F. Schade). Allo- 
type, a female and eight paratypes, all with the same data. I 
take pleasure in naming this species for Dr. R. C. Osburn. 
Baccha nectarina n. sp. 
Related to phceoptera Schiner; the wings are wholly dark 
brown, the pattern of the abdomen is different. 
Male. Length 17 mm. Wings 13 mm. (longer than the ab- 
domen). Head: cheeks and face yellow, the former brownish 
in front, the latter brownish on either side of the yellow-brown 
tubercle, and forming apparently two diffuse vittae. The front 
is brownish-yellow and brown semicircularly in front of the 
antennae which leaves, in front of the semi-circle a light brown 
spot in the center of which is a large, shining black, rounded 
callus. The upper part of the front has a subopaque, blackish 
triangle, almost equilateral, its apex touching the convergence 
of the eyes. The upper eye margin of the front is linearly 
blackish. The pile of the face, front and vertex is black, and 
golden on the whole of the occiput. The antennae are orange 
and black pilose; dorsal margin of the third joint brownish- 
black; the third joint in its longest lateral length about one 
and one half times as long as deep; arista light brown. Thorax: 
brownish-black with three slender brownish-yellow pollinose 
vittae; the outer pair becomes quite slender on the posterior 
half and expanded on the anterior margin. The lateral margins 
of the mesonotum including the whole notopleurae are widely 
brownish-yellow and are medially margined with brassy-black. 
The whole of the mesopleurae except the anterior margin, up- 
per part of sternopleurae, whole of pteropleurae, upper parts of 
meta and hypopleurae are yellowish-brown. The scutellum is 
dark brown, the narrow base and rim yellowish; the pile sparse, 
exceedingly short and black. Abdomen: quite elongate and 
spatulate, increasing gradually to the end of the fourth seg- 
ment; it is chiefly black and shining, becoming sepia brown 
over most of the long second segment and the lateral margins 
and corners of third and fourth segments and upon the middle 
and posterior margin of first segment except its sides and cor- 
ners. The ventral, lateral corners of second segment are yellow- 
ish. Just before the apex on either side of the second segment 
