20 PROCEEDINGS OF THE NATIONAL MUSEUM, Vou. 62. 
A single female specimen in the collection of the American 
Museum may possibly belong to this genus, and in many characters 
answers the description given of the species mexicana. ‘The antennae 
are not as described, the first joint being distinctly shorter than the 
head, but the third is indistinctly annulate (with apparent but not 
actual segments). It is almost impossible to identify the species from 
the description given by Bigot, but if the type is still in existence it 
may some day be redescribed. The definite locality in Mexico where 
the specimen was collected is not known. The specimen in the Ameri- 
can Museum is from the W. M. Wheeler collection and is labeled 
“Tizapan, D. F.” 
Type.—In the Bigot collection, now the property of J. E. 
Collin, Newmarket, England. 
PHEROCERA, new genus. 
This genus is closely allied to Rueppellia, judging from the descrip- 
tion and the published figures of that genus. In general appearance 
it resembles Psilocephala. Only females are known, and in these the 
frons is convex at the antennae and characteristically marked; the 
cheeks are quite apparent but do not project far below the level of 
the eyes; the proboscis is like that of Psilocephala, the palpi cylindri- 
cal and not as long as the proboscis. The antennae are shorter than 
the head, the first and third joints about equal, the second about 
one-half as long; the style is slender, cylindrical, about as long as 
the third joint, and consists of two equal segments and an apical 
bristle; first two joints bristled below. There are strong spines 
above the dorso-pleural suture and on the scutellum. The femora 
are without spines; front tibiae with rather long pile and no spines 
except at apex. Genitalia of female very peculiar, the internal struc- 
ture being hidden by the flat dorsal and ventral plates, which have 
no spines on them. ‘The wing venation is very close to some species 
of Psilocephala, but there is more coalescing of the veins; R—4 is only 
slightly curved beyond the fork; veins M—3 and Cu-1 meet some dis- 
tance before the wing margin, and after coalescing do not reach the 
margin. 
Genotype.—Pherocera signatifrons, new species. 
TABLE OF SPECIES. 
1. Two oval black spots on face at base of antennae; upper half of frons gray 
POlNGse shoo. aes oe os ee a eee signatifrons, new species. 
No black spots on face; upper half of frons shining black............------- 2. 
. Legs black; dorsum of gee thinly gray pollinose with a median dark stripe and 
pidiejspote. IOs LC CR 1 BO ee ee albihalteralis, new species. 
Legs largely reddish yellow; dorsum of thorax shining black with two silvery 
DOMINOES VIGURES 5 een noe nee eee ee eee ce ee flavipes, new species. 
