RHYTIDOPORUS.—PANGAUS. . 5 
_ I am indebted to Dr. Signoret for a comparison and identification of this species. It 
is smaller than the specimens described by Prof. Uhler as measuring 53 to 63 millims., 
the Mexican specimen figured being but 44 millims. in length. 
. STENOCORIS. 
Stenocoris, Sign. (in litt.). ’ 
Dr. Signoret informs me that he has founded the above genus, “basé sur la longueur: 
du rostre et de la téte,” for the reception of the following species. It is somewhat allied 
to.the genus Geotomus. | 
1. Stenocoris longulus. (Tab. IV. fig. 10.) 
Aithus longulus, Dall. List Hem. i. p. 119. 23°; Stal, En. Hem. pt. v. p. 26. 13. 
Hab. Mexico (Mus. Berol.); Guatremata.—N. Braziu, Para}. 
PANGZEUS. 
Pangeus, Stal, Stett. ent. Zeit. xxiii. p. 95 (1862); Uhler, Bull. U.S. Geol. & Geog. Surv. in. 
pp. 867 & 383. . 
This genus is confined to the Nearctic and Neotropical Regions, and is well represented 
in Central America. ’ 
Its principal characters are, scutellum triangular and narrowed at the apex, and the 
head without, or almost without, submarginal bristles; pronotum with an “impressed 
sinuated antero-marginal line.” 
1. Pangeus margo. (Tab. II. fig. 15.) 
Aithus margo, Dall. List Hem. i. p. 116. 12°. . 
Pangeus margo, Stal, Stett. ent. Zeit. xxii. p. 95°; Uhler, Bull. U.S. Geol. & Geog. Surv. iii. 
p. 887°. | 
Hab. N. America, Arizona ?,—Mextco 23, Oaxaca (Mus. Berol.); Guatemata, Zapote 
(Champion); Nicaraaya, Chontales (Janson).—Cotomaia; N. Brazit, Para (coll. Dist.). 
This species has always a more or less distinct, sharp, linear, longitudinal and central 
impression on the anterior half of the pronotum, extending backwards from the fore 
border, but not reaching the transverse impression. This character, however, is but 
faintly defined in some specimens; .and those from Mexico which have passed through 
my hands have been castaneous in coloration, and not piceous as is the case with more. 
southern forms. The specimen figured is from Guatemala, 
2. Pangeus piceatus. (Tab. II. fig. 18.) 
Pangeus piceatus, Stal, Stett. ent. Zeit. xxiii. p. 96. 48°; Uhler, Bull. U.S. Geol. & Geog. Surv, 
iii. p. 388°. 
Aithus tenuis, Walk. Cat. Het. i. p. 151. 22°. | 
