434 HETEROMERA. 
This is the only species of Pyrota known as yet as inhabiting the southern part of 
our region, it ranging from the Mexican State of Vera Cruz to Panama. P. decorata 
may be recognized in all its varieties by the dark suture of the elytra, in this respect 
approaching the North-American P. germari (Hald.), with the description of which it 
nearly agrees. The head and thorax vary in colour from black to rufous, two small 
black spots on the disc of the latter excepted. In dark specimens the sutural stripe 
of the elytra is dilated anteriorly into a large triangular patch—in pale ones it is 
extended narrowly to the base, with a small oblong spot on either side of it; the 
discoidal vitta varies from about half to two-thirds of the elytral width, and extends 
from the humerus (where it is narrow) to near the apex. The legs, antennae, and 
underside are black. The elytra are dull, densely, finely punctate; the thorax is 
narrow and very elongate, with some fine, widely-scattered punctures and indistinct 
transverse ruge; the head is sparsely, somewhat coarsely punctate, the vertex sulcate. 
In some specimens the third joint of the antenne is shorter than the fourth. The 
apical joint of the maxillary palpi in the male is very stout, obliquely pyziform. 
Varies in length from 10 to 27 millim. The female only appears to have been known 
to Haag. P. germari has a black head, with yellow frontal space, a reddish-yellow 
thorax, with two black spots, and the basal half of the femora and tibie yellow. 
9. Pyrota akhurstiana. 
Pyrota akhurstiana, Horn, Trans. Am. Ent. Soc. xviii. p. 44, t. 1. fig. 9°. 
Hab. Norta America, Tucson, Arizona !.—Norta Mexico (Akhurst *). 
We are indebted to Dr. Horn for a Mexican specimen of this very distinct species. 
He does not mention! the widely-scattered, irregularly-arranged, coarser punctures of 
the elytra, these being very distinct from the minute close punctuation of the surface. 
P. divirgata has similar, but less distinct, additional punctures on the elytra. 
10. Pyrota insulata. 
Lytta insulata, Lec. Journ. Acad. Phil. (2) iv. p. 22 (1858) ’. 
Pyrota insulata, Lec. New Sp. Col. p. 1597; Horn, Trans. Am. Ent. Soc. xii. p. 114, t. 5. 
fig. 17°. 
Hab. Nortu America, Texas 1? 3,—Mexico, Villa Lerdo in Durango (Hodge). 
A single specimen (2) from Durango differs from two others (3) from Texas 
before me in having the black more extended on the thorax and elytra, the latter 
being very narrowly margined with yellow at the suture and laterally, and having 
the oblique basal streak narrower, and the anteapical spot very small, not extending 
to the suture. 
