76 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62, 
PSILOCEPHALA MACULIPENNIS Kriber. 
1914. Psilocephala maculipennis KROBER, Beiheft z. Jahrb. Hamb. Wiss. Anstal- 
ten, vol. 31, p. 46. 
Male.—Length 9 mm. Very near tergissa. The head is yellowish 
gray tomentose, the antennae pale yellow with the tip of the third 
joint and the style black. The mesonotum is blackish green with 
indefinite pale stripes. 
All the legs are pale yellowish brown. The abdomen has not the 
brown tomentum of tergissa; the anal segment is reddish yellow, 
club-shaped. The wings are hyaline, with strong veins, the cross 
veins all broadly bordered with brown. The longitudinal veins have 
spots only at the tips; the stigma is pale. 
Type locality —Two males were taken in San Jose del Cabo, Mexico 
(probably the place by that name at the tip of the peninsula of Lower 
California). 
Type.—In the United States National Museum, Cat. No. 26019. 
PSILOCEPHALA BRUNNEA Krober. 
1914. Psilocephala brunnea KroseEr, Beiheft z. Jahrb. Hamb. Wiss. Anstalten, 
vol. 31, p. 46. 
Female—Length 10 mm. A large, predominately reddish yellow 
species, with reddish yellow bristles on mesonotum and scutellum. 
The frons is light reddish yellow tomentose, the antennae short and 
pale reddish yellow, the third joint onion-shaped, with a short blunt 
style. The occiput is blackish, thin whitish pilose. The legs are pale 
yellowish brown. The halteres are yellowish brown, also the abdo- 
men, which has darker parts but no pale bands. The wings are 
tinged pale brown, the stigma is pale yellow. 
Type locality.—Oracle, Arizona. The specimen taken June 29. 
Type.—tin the United States National Museum, Cat. No. 26020. 
PSILOCEPHALA PILOSA Krober. 
1914. Psilocephala pilosa Kr6ser, Beiheft z. Jahrb. Hamb. Wiss. Anstalten, 
vol. 31, p. 47. 
Male.—Length 8mm. Very near pavida. A small,slender, largely 
black haired species; differing from pilosula Bigot, from South Amer- 
ica, in the black tibiae. The head is yellowish white, shining, the 
frontal triangle black, with a yellow median line. The antennae are 
short, black, the third joint slender, the first and second very long 
and strongly black bristled. 
The mesonotum is dull, black, whitish tomentose, with two fine 
white lines; the pile is long and black, but thin. Haulteres and legs 
are wholly black. The abdomen is blackish and thick pilose, with 
