428 HETEROMERA. 
slightly longer than broad, compressed at the sides behind and narrowing in front, the disc transversely 
depressed anteriorly and with a fine median line, the surface densely, minutely punctured; elytra long 
and parallel, very much wider than the prothorax, minutely scabrous-punctate ; beneath reddish-testaceous, 
the sternal side-pieces and the apex of each ventral segment piceous, finely cinereo-pubescent, closely 
punctured ; legs rather slender, piceous, cinereo-pubescent, the spurs of the hind tibie slender. 
Length 11 millim. 
Hab. Mexico, Villa Lerdo in Durango (Hoge). 
One specimen, probably a female. This species has joints 3-10 of the antenne 
subequal in length, 3 comparatively short, not longer than 4, 2 more than half the 
length of 3. It is of an obscure luteous colour, with very fine, rather sparse, cinereous 
pubescence; the head is large, and the thorax narrow and compressed at the sides 
behind ; the eyes are large; the punctuation is very fine and close. 
PYROTA. 
Pyrota, Leconte, Class. Col. N. Am, p. 273 (1862); Leconte & Horn, Class. Col. N. Am. 2nd edit. 
p- 421 (1883) ; Horn, Trans. Am. Ent. Soc. xii. p. 112. 
The species hitherto referred to this genus are all American, and range from the 
United States to Brazil. Pyrota differs from Cantharis and Pomphopea in the antenne 
being setaceous or subfiliform, not thickened externally, and from Kpicauta, &c., by the 
anterior femora and tibie being without a silky-pubescent concave space on their inner 
face; all our species have the upper surface more or less yellowish, with black vitte or 
spots, the black sometimes preponderating, and the elytra usually glabrous. The last 
joint of the maxillary palpi in the male varies greatly in shape according to the species, 
from exceedingly broad and somewhat scaphiform to obliquely pyriform, with the under- 
side deeply excavated ; in P. rugulipennis, &c., it is elongate-ovate in both sexes, and not 
excavate beneath in the male *. ‘The antenne have their first joint obliquely truncate, 
and the second joint articulated to it near the outer apical angle, so that they appear to 
be subgeniculate. In P. rugulipennis, 3, the sixth ventral segment (not the terminal, 
or seventh, which is incised) has an elongate-triangular depression extending trom the 
apex forwards, the depression filled with membrane, the same segment in the female 
being deeply arcuate-emarginate at the apex. 
Of the fifteen Pyrote here enumerated, seven also occur in the United States, one 
only extending south of Mexico. 
Elytra yellow, with three broad black fasciz, the third fascia La 
extending to the apex . . . . . . . . . terminata, Lec. 
Elytra yellow, each with two spots at the base, two ‘0 oblong, more 
or less coalescent spots at the middle, and a lunate mark 
before the apex, black . 2. 2 . 1. 6 ee ee ee punctata, Casey. (/ 
* The sexual characters as given by Dr. Horn (op. cit.) require modification. 
