396 HETEROMERA. 
Macrobasis borrei, Dugés, An. Mus. Michoacano, ii. p. 50°; Horn, Trans. Am. Ent. Soc. xii. 
pp. 107, 109%. 
Hab. Muxtco } (Sallé, ex coll. Sturm), Tupataro (Dugés? *), Guanajuato (Salle). 
We have received two examples of this species, both males. The basal joint of the 
antenne in this sex is moderately elongate, strongly sinuate, broadly and angularly 
dilated on the inner side about the middle, and concave between this and the apex, the 
latter truncate; the second joint is articulated to the first at the inner apical angle, and 
is about half the length of the first; the third and fourth joints are short, subequal. 
The anterior tibie have two spurs. The basal joint of the anterior tarsi is elongate 
and quite normal, and considerably longer than the second. 
Lytia fumosa, Germ., from Brazil, is an Epicauta. 
2. Macrobasis distorta. (Tab. XVIII. figg. 16, ¢; 164, antenna, d .) 
Elongate, parallel, sparsely and finely pubescent ; the head, prothorax, and underside testaceous or ferruginous, 
sometimes in part piceous, the labrum usually paler in colour; the elytra luteous or fusco-luteous; the 
legs testaceous or reddish-testaceous, with the knees, tibia, and tarsi usually darker; the elytra with the 
sutural and lateral margins very narrowly and a fine median line extending from the base nearly to the 
apex more densely clothed with paler or whitish pubescence, and sometimes with a spot on either side of 
the scutellum at the base and a short streak on the humeri brown-pubescent, the rest of the pubescence 
of the upper surface .yellowish-cinereous. Head moderately large, closely and finely punctured, with a 
fine, sharply-defined, median line; antennz setaceous, black, the two basal joints in the male obscure 
ferruginous ; prothorax narrower than the head, rather longer than bro ad, rounded at the sides anteriorly, 
parallel behind, closely and finely punctured, with a fine, smooth, impressed median line; elytra long and 
parallel ; beneath closely and finely punctured. 
3g. Antenne with the basal joint nearly as long as joints 2-5 united, very stout and much flattened, 
sinuous beyond the middle, broadly and angularly widened on the inner side at about one-third from the 
apex, and deeply emarginate between this and the tip; joint 2 stout, flattened-cylindrical, slightly longer 
than 3 and 4 united; joints 3-11 slender, decreasing in thickness, 3 shorter than 4; joints 1 and 2 
shining, sparsely punctured, 3-11 opaque, densely and very finely punctate. Anterior tibiz with a single 
spur. Anterior tarsi with the basal joint scarcely dilated, concave and almost smooth beneath, fully as 
long as the second. Sixth ventral segment triangularly emarginate. 
9. Antenne with the basal joint only a little longer than the secon d, the latter not quite the length of 
the third. 
Length 9-17, breadth 27-43 millim. (¢ 2.) 
Hab. Muxico, Iguala in Guerrero, Jalapa (J/ége), Orizaba (Sadlé); Nicaragua, 
Chontales (Belt, Janson). 
A pair from Nicaragua and three females from Mexico. In the greatly distorted 
basal joint of the male antenna this species approaches VM. fumosa, from which it may 
easily be distinguished by its more elongate shape, fine pubescence, and different colour, 
and also by the single spur to the anterior tibie and the concave basal joint of the 
anterior tarsi in the male. I. forticornis (Haag) is a similarly coloured allied form ; 
but, to judge from the description, it has a much less angularly dilated basal joint— 
“etwas gebogen, breit, flachgedriickt "—to the male antenna. | 
