120 HEMIPTERA-HETEROPTERA. 
double row of tubercles on outer surface, a row of smaller and more obscure tubercles on upper and lower 
surface, and a row of spines on inner margin, of which three situated on apical half are longest. Posterior 
tibie very faintly dilated inwardly, but finely denticulated ; strongly dilated outwardly, gradually widening 
from base to near the middle, where they are strongly sinuated and narrowed to the apex; apices 
concavely truncated. 
Long. 28 millim. 
Hab. Guatema.a, Balheu (Champion). 
Allied to A. declivis, but differs at once from all the forms of that species by the 
much less produced lateral angles of the pronotum. | 
4. Acanthocephala granulosa. (Tab. XI. fig. 189; Tab. XII. fig. 92.) 
Metapodius granulosus, Dall. List Hem. ii. p. 480.7’; Uhler, Bull. U.S. Geol. & Geogr. Surv. ii. 
p- 298°; id. Wheeler’s Rep. Geog. Expl. v. Zool. p. 831°. 
Diactor alatus, H.-S. Wanz. Ins. vi. p. 53, f. 613 (excl. syn.) *. 
Acanthocephala (Metapodius) granulosa, Stal, En. Hem. i. p. 151. 6°. 
Metapodius thomasii, Uhler, Hayden’s Surv. Montana, p. 399. 1 (1872) °. 
Acanthocephala thomasii, Town. Glov. Ill. Ins. Ord. Hem. p. 20, t. iv. f. xi., and t. vii. f. 22. 
Hab. Norra America, Arizona?®, California 2%, Colorado °, Texas ?.—Mexico ? £5, 
Yucatan, Valladolid (Gawmer); Honpuras 1, Belize, Rio Hondo (Blancaneaur) ; Guatn- 
MALA, Capetillo, Chiacam, San Geronimo, San Juan (Champion); Nicaracua, Chontales 
(coll. Dist.) ; Costa Rica (Van Patten). 
This species varies in the more or less sinuated and angulated posterior tibie in both 
sexes. Of the two specimens figured, the male represents the type contained in the 
British Museum, and the female is that of a specimen received from Yucatan, which is 
also strictly typical. 
M. thomasii, Uhler, agrees with the specimen figured by Herrich-Schaffer under the 
name of D. alatus in having the posterior tibie of the male much less angulated and 
sinuated. Uhler states that after a close examination of other and darker specimens he 
considers his MM. thomasit to be a pale variety of WM. granulosus; and a large series of 
specimens which have passed through my hands confirms this view. 
5. Acanthocephala luctuosa. (Tab. XII. fig. 10.) 
Metapodius luctuosus, Stal, Ofv. Vet.-Ak. Férh. 1855, p. 184. 1°. 
Acanthocephala (Metapodius) luctuosa, Stal, En. Hem. i. p. 151. 7°. 
Hab. Mexico } 2. 
The figure is that of a typical specimen in the Stockholm Museum. 
6. Acanthocephala bicoloripes. (Tab. XI. figg. 163,179). 
Metapodius bicoloripes, Stal, Ofv. Vet.-Ak. Forh. 1855, p. 184. 27. 
Acanthocephala (Metapodius) bicoloripes, Stal, En. Hem. i. p. 151. 9”. 
Hab. Costa Rica (Van Patten), Caché (Rogers).—Cotom1a, Antioquia 12. 
