356 HETEROMERA. 
flattened above and a little depressed between the points of insertion of the antenne ; prothorax about 
one-third longer than broad, rapidly narrowing from the base, the sides slightly flexuous, the hind angles 
rather obtuse, the surface thickly and somewhat coarsely punctured, the disc with a broad shallow longi- 
tudinal groove on either side extending from the base to about the middle, the intermediate space feebly 
convex, the basal lobe broadly triangular, slightly raised, but not notched at the tip; elytra, at the base 
excepted, very sparsely punctured, moderately long, pointed but not acuminate at the tip, becoming rapidly 
dehiscent from the basal third, the disc of each with a broad, almost smooth longitudinal groove, this groove 
limited laterally by a rather sharp carina which extends from the apex upwards to about one-fourth 
from the base ; beneath and the legs finely and somewhat thickly punctured; anterior coxe contiguous 
towards the tip; second joint of the hind tarsi broadly flattened, a little shorter than the third joint; 
anterior tarsi in the male with joints 2-4 finely pubescent beneath. 
Length 84 millim. (¢.) 
Hab. Mexico, Yautepec in Morelos (Hége). 
One male example. Closely allied to E. excavata, but differing as follows :—Broader 
and less elongate ; the elytra much more sparsely punctured, more dehiscent posteriorly, 
less sharply pointed at the tip, and with a well-defined sublateral carina, the base only 
black ; the longitudinal groove on either side of the disc of the thorax behind shallower, 
the intermediate space much less convex; the vertex a little flattened in front; the 
antenne, the extreme tips of the rami excepted, brownish-yellow; the legs reddish- 
testaceous, with the femora piceous. In its general shape EL. carinipennis more nearly 
resembles EL. bifoveata. 
5. Kmenadia octomaculata. (Tab. XVI. fig. 10, 3, var.) 
Rhipiphorus octomaculatus, Gerst. Rhipiph. Col. Fam. Disp. Syst. p. 22'; Horn, Trans. Am. Ent. 
Soc. v. p. 123°. 
Emenadia octomaculata, Fleut. & Sallé, Ann. Soc. Ent. Fr. 1889, p. 482°. 
Ripiphorus diffiuens (Lac.), Dej. Cat. 3rd edit. p. 240+. 
Rhipiphorus bicolor, Say, Journ. Acad, Phil. iii. p. 275 (1823)°; Complete Writings, ii. p. 162° 
(nec Oliv.). ; 
Rhipiphorus sayi, Lec. Journ. Acad. Phil. (2) iv. p. 21 (1858) ”. 
Rhipiphorus puncticeps, Lec. loc. cit. p. 20°. 
Hab. Norta America® §, Illinois!, Kansas ?, Georgia ?, Florida?, Texas 2.—Guats- 
MALA, San Gerénimo (Champion), Chamiquin, Chimaltenango (Conradt). —Soutu 
AmeERIcA, Cayenne*, Pernambuco!, Bahia!; ANTILLES, Guadaloupe °. 
Of this variable and very widely distributed species we have three male examples 
from Guatemala. These specimens have the thorax, elytra, and legs (the tarsi excepted) 
ferruginous, the thorax with a large oblong patch on either side of the disc, the elytra 
each with three spots—one humeral, one median, and one apical; the apical spot is 
evanescent in two out of the three examples. According to Horn 2, E. bicolor (Say) 
(=. sayi, Lec.) and E. puncticeps (Lec.) are varieties of E. octomaculata. 
We figure a male from San Geronimo. 
