364 NITIDULIDA. 
PSILOPYGA. 
Psiloypga, Leconte, Proc. Ac. Phil. 1853, p. 286; Horn, Trans. Am. Ent. Soc. vii. p. 318. 
Eugoniopus, Reitter, Wien. ent. Zeit. il. p. 264, & iv. p. 76. 
Psilopyga has been recently abandoned by the North-American entomologists (Lec. 
& Horn, Classification of the Col. of N. Amer. 2nd ed. p. 151) as being synonymous 
with Oxycnemus. The two genera are, however, very distinct, and I do not think they 
should be placed in the same division of the Strongyline. In Psilopyga the meso- 
sternum is brought down to the level of the metasternum, and the prosternal process 
is free and passes over the carinate mesosternum, and is received upon the front of the 
metasternum. This is a very different structure to that found in Oxycnemus, and differs 
but little from what exists in Camptodes. Psilopyga thus belongs to the group of 
genera in which the prosternal process is quite open behind ; while Oxycnemus is the 
most advanced exponent of the group in which it is closed behind. 
On the other hand I do not notice any difference between the Japanese genus Hugo- 
niopus and Psilopyga, and have no hesitation in uniting them. Psilopyga is thus a genus 
having at present one species in Japan, two in North America, and one in Mexico. 
1. Psilopyga fasciata, sp. n. 
Ovalis, sat convexa, nigra ; elytris ex parte majore rufo-testaceis ; antennis testaceis, clava fusca ; pedibus piceis, 
tarsis dilutioribus. 
Long. 53 millim. 
Hab. Mexico (Truqui, in Mus. Brit.). 
Head strongly constricted in front of the eyes, closely and rather coarsely punctured, 
piceous. ‘Thorax black, punctured above evenly, like the head. Scutellum triangular, 
almost rectilinear at the sides, distinctly punctured. LElytra with the basal portion 
reddish-yellow, the apical part black, the black part not so extensive as the yellow 
part ;. with regular, very distinct and definite series of punctures, and with a somewhat 
sparing and fine, but quite distinct, interstitial punctuation. Pygidium large, black, 
coarsely punctate. 
This species is known to me only by a single example in our National Collection. 
It is a male and hasa large supplementary segment exposed at the apex of the 
pygidium. Its resemblance to a Histerid is very striking. In addition to the colour, 
it differs from the North-American P. histrina by the much narrower prosternal 
process. 
PALLODES. 
Pallodes, Erichson, in Germar’s Zeitschr. iv. p. 348 (1848). 
This genus has hitherto consisted of about six species of small Nitidulide, but has 
apparently a wide distribution, representatives supposed to belong to it being recorded 
from North and South America, Japan, and Madagascar.’ 
