242 ENTOMOLOGICAL NEWS. [June, ’14 
cle in the middle, but is evenly convex, excepting the shallow 
antennal depression, and entirely transversely wrinkled. From 
this diagnosis there will be no difficulty in distinguishing the 
species of this genus. As Mosillus is not apparently repre- 
sented in South America, this genus probably takes its place 
there. It may be characterized as follows: 
Similar to Mosillus Latr. in general build. Head (Pl. X, 
figure 3) as broad as high; eyes large, elliptical, not promi- 
nent. Front broader with orbits parallel, smooth except for 
small distinct pits; besides the usual vertical and ocellar bris- 
tles there is a pro+ and a reclinate orbital present. Face 
gently convex, retreating, depressed at antennae; except di- 
rectly beneath antennae, strongly transversely sulcate, the 
sulci somewhat tortuous laterally, the elevations interrupted 
by the suggestion of orbital grooves, the entire face appearing 
somewhat honey-combed under moderate magnification ; facial 
bristles hair-like, numerous, situated in a pit in each sulcus in 
position to corresponding with the orbital groove. Clypeus 
quadrate, very prominent, usually deflexed. Proboscis and 
palpi small. Antennae very short, third joint quadrate, sec- 
ond weakly spinose, arista distinctly pectinate above. Thorax 
quadrate, with 1 prescutellar near roots of scutellum, 1-2 post- 
alars, 2 notopleurals, 1 humeral, all weak. Scutellum broad, 
broadly rounded apically, with 4 marginal bristles. Abdomen 
ovate in both sexes; genitalia inconspicuous. Legs robust; 
anterior femora finely ciliate beneath apically, but no spines 
or bristles. 
Genotype.—Cerometopum mosilloides n. sp. 
Cerometopum mosilloides n. sp. (Plate X, fig. 3). 
Entirely black, except palpi white or yellowish, all tarsi except api- 
cally, apex of middle and hind femora and their tibiae, entirely yellow; 
all tibiae silvery outside; anterior tibiae brown. Wings luteous, with 
yellow veins, but costa darker. 
Front shining, with no differentiated areas, but with distinct spheri- 
cal pits as follows: A pair behind and a pair before the line of an- 
terior ocellus and near anterior margin of front. Face shining, with 
greenish metallic reflections. Cheeks one-half eye-height with weak 
bristle. Antennae about one-sixth as long as face, third joint nearly 
