34° 
The Ohio Naturalist. 
[Yol. XIV, No. 8, 
Volucella scutellata Bigot. Mostly plain black, front and face 
pale, scutellum brown with stout spiniferous tubercles. Many 
of the veins adjacent to the costal border of the basal part of the 
wing margined with brown. Length 15 mm. Santiago, Ouillota 
and various other localities in Chile. 
Volucella tympanitis Fabricus. A rather small pale species 
with the abdomen banded with brown. Wing hyaline with a 
brown spot at stigma and another near the apex. Volucella 
ardua Wiedemann seems to be a synonym. True Wiedemann 
recognizes both as valid species in the same publication but the 
descriptions read so near alike that I cannot make the distinction. 
Length 9 mm. A specimen from Bartica, British Guiana and one 
from Santa Lucia, Guatemala. 
Phalacromyia Rondani. 
Phalacromyia nigrifrons n. sp. A small dark colored species. 
Thorax, including the scutellum, shining purple, abdomen brown, 
front black, face yellow. Length 6 mm. 
Face much produced forwaid but not so much downward, 
yellow without black markings, antenna yellow, proboscis near 
the length of the front femora; front shining black, the color 
changing at the insertion of the antennae producing a pronounced 
contrast with the yellow of the face. Thorax shining purple, 
scutellum of the same color as the thorax and with a distinct im¬ 
pression just before its apex. Legs all dark brown with the 
exception of the posterior tibiae which are pale. Wings very pale 
yellowish, costal border more intense, a dark brown point at 
stigma. Abdomen dark yellowish brown, slightly darker at the 
incisures. 
The type female taken at Bartica, British Guiana, May 28, 
1901, by H. S. Parish. 
Phalacromyia virescens Williston. A pale green species with 
vellowish wings. Anterior part of the thorax yellowish, a small 
dark spot in front of the scutellum and another in the transverse 
impression just before its apex. Front pale green, face yellow. 
A female specimen from Bella Vista Yungas, Bolivia. 
The locality is some distance from where Williston’s type was 
procured but the specimen answers the description in detail. 
Eristalis Latreillc. 
Eristalis aemulus Williston. Five specimens from Bartica, 
British Guiana. Williston has reported the species from Mexico and 
Central America. 
Eristalis albifrons Wiedemann. We have the species from 
Louisana, Yucatan and Guatemala. 
Eristalis assimilis Macquart. Numerous examples of both 
sexes from Arequipa and Puno, Penn 
