142 PHYTOPHAGA.—SUPPLEMENT. 
dark brown punctures, which only at the extreme apex show traces of arrangement 
into rows; the interstices are finely wrinkled throughout, the wrinkles very slightly 
raised above the punctures; from the basal margin two very narrow and indistinct 
flavous raised lines extend a little way downwards. The pygidium is dark brown, and 
clothed with long greyish pubescence. The underside and legs are pale brownish, and 
the femora have a piceous ring-shaped mark. 
8 (c). Pachybrachys maculicollis. (Tab. XXXIX. fig. 4.) 
Black ; above yellowish-brown; the head with four, the thorax with five partly connected black spots; elytra 
strongly and rather irregularly punctured, the punctures black, the interstices scarcely raised, three spots 
at the sides, and three others near the suture, black; pygidium and legs spotted with yellow. 
Length 2 lines, 
2. Head flavous, finely punctured, the vertex, an elongate-triangular spot at the middle, and two small spots 
at the base of the antenne, black; antenne scarcely half the length of the body, the lower six joints 
fulvous, the others black; thorax about twice as broad as long, the sides narrowed towards the apex, the 
surface rather irregularly and finely punctured, but with some smooth yellow spaces here and there, and 
with three spots placed triangularly at the middle of the base and one on each side (which, if connected, 
form the usual (¥)-shaped mark), black; scutellum black; elytra pale brownish like the thorax, the 
punctures black and irregularly distributed, but forming here and there double rows, of which one may 
be distinguished near the suture and two others at the sides, the outer row connected with the three 
black lateral spots (one placed at the shoulder, one at the middle, and one near the apex), the spots near 
the suture more or less elongate in shape and placed slightly lower than the lateral ones, the disc and the 
sides with a single longitudinal costa; pygidium black spotted with yellow, this colour extending to the last 
abdominal segment; legs fulvous, the femora having the usual black mark, followed by a bright yellow spot. 
Hab. Mexico, Milpas in Durango (orrer). 
In this species, females only of which are before me, the elytra are devoid of the 
numerous longitudinal raised cost found in most Pachybrachys at the sides and apex, 
two only being visible; and this form of sculpture places P. maculicollis in Suffrian’s 
fifth group. From the closely allied species described by Suffrian it may be known 
by its yellowish-brown upper surface, the five distinct spots on the thorax, and the 
irregular elytral sculpture. If the latter is carefully examined, three double rows of 
punctures may be seen, between which the interstices are slightly raised; the outer 
rows of these punctures are united at a little distance from the apex; the other portion 
of the surface is irregularly impressed with black punctures; the black lateral and 
discoidal markings are plainly visible to the naked eye, forming three irregular, 
transverse, broken bands as in P. scenicus, P. irregularis, and others. P. maculicollis, 
however, differs from these species in having the lateral rows of punctures much more 
regular, and the thorax is marked with bands, not spots. 
Pachybrachys labyrinthicus (p. 67). 
To the locality Mexico, add:—Ciudad in Durango (forrer), Chilpancingo, Amula, 
Xucumanatlan, and Acapulco in Guerrero (Hoge, H. H. Smith), Mexico city (Flohr). 
An examination of the numerous specimens since received from the above localities 
