370 , : HETEROMERA. 
1. Megetra cancellata. (Tab. XVII. fig. 8, var.) 
Meloe cancellatus, Brandt & Erichson, Monogr. gen. Meloés, p. 141, t. 8. figg. 9, 96°. 
Megetra cancellata hegei, Dugés, An. Mus. Michoacano, ii. p. 39°. 
Hab. Mexico (Mus. Berol.1; Sallé; ex coll. Sturm), Tula? and Pachuca in Hidalgo 
(Hoge). 
Var. The elytra comparatively longer in both sexes, in some males almost covering the abdomen ; the reticu- 
X 
y, af lated reddish lines more or less obliterated towards the suture, and forming an irregular sublateral vitta 
with diverging branches on either side. (Fig. 8.) 
Cysteodemus cancellatus, Lec. Proc. Acad. Phil. vii. p. 224°; Journ. Acad. Phil. (2) iv. p. 38°. 
Megetra cancellata, Lec. Ann. & Mag. Nat. Hist. (4) vi. p. 404°; Dugés, An. Mus. Michoacano, ii. 
p- 38°. 
Hab. Nortu America, New Mexico®, Arizona+®, Los Organos’, San Diego ?.— 
Mexico‘, Villa Lerdo in Durango (Mohr °, Hoge). 
Herr Hége obtained a large number of examples of both forms of this species; the 
two forms occurring in widely-separated localities and not intermixing. Leconte 
states ® that his VW. cancellata is probably a variety of IZ. vittata. 
2. Megetra vittata. 
Cysteodemus vittatus, Lec. Proc. Acad. Phil. vi. p. 330°; Col. of Kansas and Eastern New Mexico, 
p. 16, t. 2. fig. 97; Journ. Acad. Phil. (2) iv. p. 38°. 
Hab. Nortu America, New Mexico!?, Arizona®.—Mexico, Pinos Altos in Chi- 
huahua (Buchan-Hepburn), Chihuahua city, Villa Lerdo in Durango ({6ge). 
Very near M. cancellata, var., but differing from it by its much smaller size, the 
more shining and less transverse thorax, and the shorter and deeply foveate elytra; the 
reddish or yellow sublateral vitta on each elytron well defined, with (at most) very 
short divergent branches on either side. ‘The sculpture of the elytra is very different 
from that of either of the forms of IW. cancellata, Brandt & Er. 
Subfam. CANTHARIN AL. 
Group HORNIIDES. 
This group contains two very anomalous insects, one (Hornia minutipennis, Riley) 
from the United States, and the other (Leonea rileyi, Dugés) from Mexico; both 
appear to be parasitic on the Hymenopterous genus Anthophora. Leonia seems chiefly 
to differ from Hornia by the tarsal claws being provided on the underside with “a long, 
straight, acute spine, which attains three-fourths of the length of the claw;” we have 
not received an example of it. Hornia is referred by Leconte and Horn (Class. Col. 
N. Am. 2nd edit. p. 419) to the Sitarides. 
