ANZDUS. 233 
and the Tropical South-American Phobelius and Tithassa have not yet been received 
from our country. 
ANADUS. 
Anedus, Blanchard, Hist. Nat. Ins. ii. p. 35 (1845). 
Anedus, Lacordaire, Gen. Col. v. p. 896; F. Bates, Trans. Ent. Soc. Lond. 1868, p. 318, note ; 
Horn, Rev. Ten. of Am. north of Mexico, p. 373. 
Aspisoma, Dej. Cat. 3rd edit. p. 228. 
This is a genus numerous in species in Tropical America, and extending northwards 
to the Middle United States. By far the majority of the species in collections are 
undescribed as yet. A. orientalis, Motsch., from Mongolia (described from a specimen 
without antennz), is, as its author suggests, probably referable to another genus, Nine 
species inhabit our country ; all but one of these appear to be undescribed. The different 
species vary considerably in the structure of the antenne; in some the third joint is 
scarcely longer than the second ; in several species these organs are longer in the male 
than in the female. In one, A. brevicollis, the tibie are curved and slightly swollen, 
and the anterior pair armed with a short tooth in the male; in our other species the 
tibiae are more or less slender, and similar in both sexes. In A. brevicollis and 
A. setulosus the penultimate joint of the tarsi is more distinctly widened than in the 
other species recorded here. Certain, mostly South-American, forms have the elytra 
more or less maculated. These insects are found by beating herbage and also on the 
ground beneath fallen timber or stones. The following table will assist in the deter- 
mination of the Central-American species :— 
Form oblong or elongate ovate, the upper surface more or less depressed. 
Tibiee slender, unarmed in the male. 
Antennee with the third joint long, at least more than twice as long as 
the second . . 2 ee ee tee ee ew wee) punctatissimus, 
similis, mexicanus, maculatus. 
Antennz with the third joint short, as long as or not much longer than 
the second . . . 2 ee ee ee ee ee ee bongicornis, 
marginatus, apicicornis. 
Tibi slightly curved and swollen, the anterior pair especially, and armed 
with a small triangular tooth in the male . . . . .. . . . « 6revicollis. 
Form elliptic, convex ©.) 6 ee ee tt setulosus. 
1. Anedus punctatissimus. 
Anedus punctatissimus, Blanch., in D’Orbigny’s Voyage, vi. pt. 2, p. 198, and Atlas, Ins. t. 14. 
£.10'*; Lacord. Gen. Col. v. p. 397, note’ ; Dej. Cat. 3rd edit. p. 227°. 
Hab. Muxico, Presidio, Ventanas (Forrer), Oaxaca (coll. F. Bates), Orizaba, Cordova, 
* This figure is very incorrect, as noted by Lacordaire. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, November 1886. 29HH 
