150 PHYTOPHAGA.—SUPPLEMENT. 
entirely resemble P. laticollis, but are for the most part smaller, and the male differs 
from the corresponding sex of that species in the apical joint of the antenne not being 
dilated, and also in the thorax being less broadly shaped. The colour is extremely 
variable, either the brown, black, or flavous predominating ; the thorax is crowded with 
small punctures and irregularly marked with very small flavous spots, and generally 
has three broad obsolete dark bands placed at the sides and middle (as in so many other . 
species of the genus) which sometimes occupy almost the entire disc; the elytra have 
the sutural portion to below the middle and laterally to half their width irregularly 
punctured, the rest of the surface (especially towards the apex) being impressed with 
sinuous longitudinal rows of punctures between which the interstices rise as narrow 
flavous spaces; the pygidium is yellow, with the margins and a central stripe darker ; 
the underside varies from dark brown to nearly black, with the last abdominal segment 
generally flavous; the base and apex of the femora are flavous, the rest of the legs 
nearly black. P. spumarius, Suffr., from North America, seems to be almost identical 
with P. femoratus. In regard to the elytral punctuation of P. femoratus, or rather to 
that of the specimens I refer doubtfully to this species, ] may add that in all our 
examples the irregularly punctured area near the suture is bounded below by a small 
smooth transversely-shaped space which interrupts the first two rows of punctures (of 
this Suffrian makes no mention). 
27. Pachybrachys pectoralis. 
Cryptocephalus pectoralis, Melsh. Proc. Ac. Phil. ii. p. 171°. 
Pachybrachys pectoralis, Suffr. Monogr. in Linn. Entom. vil. p. 187 *. 
Pachybrachys sobrinus, Haldem. Journ. Ac. Phil. 2nd ser. i. p. 262°. 
Hab. Norra America! 23,—Guaremata, Zapote (mus. Stuttgart). 
Two specimens from Guatemala received from the Stuttgart Museum agree so well 
with the description given by Suffrian of P. pectoralis that I must refer them to that 
species. It may be distinguished by the closely approached eyes in the male, in con- 
nection with the one central and two lateral flavous stripes of the thorax (common to 
so many species of the genus); the elytra have very conspicuous bright yellow spots or 
spaces placed between the black or dark brown strie—of these spots, four, especially 
prominent, are placed transversely below the middle, and a single spot above them and 
four below them, transversely placed, as well as the flavous apex, may be distinguished ; 
the underside is brown, spotted with pale flavous at the sides of each abdominal segment, 
the breast being darker. 
28. Pachybrachys pallidipennis. 
Pachybrachys pallidipennis, Suffr. Monogr. in Linn. Entom. xii. p. 406°. 
Hab. Norta America, Texas !.—Mexico, near the city !. 
