DIBOLIA.—PSEUDODIBOLIA. 291 
raised ; antenne robust, black, the basal two joints stained with fulvous, the third joint thin and small, 
the following joints gradually thickened; thorax short and very strongly transverse, the sides rounded, 
the surface black, sparingly and finely punctured, the punctures rather larger near the base; elytra dark 
metallic blue, oblong, nearly parallel, the punctures large and rather irregularly arranged near the suture, 
more regularly placed at the sides, the interstices with a few minute punctures only ; underside and legs 
black ; the posterior tibial spur long ; abdomen impunctate, 
Hab. Mexico, Chilpancingo in Guerrero (H. H. Smith). 
A single specimen. 
PSEUDODIBOLIA. (To follow the genus Dibolia, p. 358.) 
Body ovate, very convex ; head inserted in the thorax as far as the eyes; antenne short, the terminal joints 
submoniliform, the second and third joints short, equal; thorax transverse, short; elytra convex, punctate- 
striate, their epipleurs concave, extending to below the middle; posterior femora very strongly incrassate ; 
posterior tibize dilated, deeply channelled, serrate on their outer edge, the apex furnished with two strong 
spurs; the first joint of the posterior tarsi as long as the following joints together ; claws appendiculate ; 
prosternum rather broad, slightly widened posteriorly ; mesosternum short; the first abdominal segment 
as long as the following three segments together; anterior coxal cavities open. 
The species for which this genus is proposed closely resembles a Homophyla or 
Spheroderma, but differs from either in the armature of the posterior tibiee and in the 
short submoniliform antenne. Dibolia has a double spur to the hind tibie, but the 
spur is only divided at the apex; in Pseudodibolia there are two entirely separated 
spurs, the inner one being longer than the other. In the present genus, moreover, 
the outer edge of the posterior tibie is serrate. The sectional characters given by me 
on p. 357 require modification to include this genus. 
1. Pseudodibolia picea. (Tab. XLII. fig. 20.) 
Piceous or black ; the basal six and the apical two or three joints of the antennx reddish-yellow, the other 
joints black ; thorax finely longitudinally strigose ; elytra strongly punctate-striate, the interstices finely 
punctured. , 
Length 13 line. - 
Head closely and finely punctured, piceous or dark fulvous, the frontal elevations absent, the clypeus with a 
central ridge, fulvous, as well as the labrum; palpi scarcely thickened; antenne only extending to the 
base of the elytra, reddish-yellow, the seventh to the ninth joints black, the apex of the terminal joint 
concave ; thorax nearly three times as broad as long, slightly widened at the middle, the sides straight, 
the anterior angles oblique and a little thickened, the surface very closely and finely longitudinally 
strigose ; scutellum transverse ; elytra very convex, nearly black, rather closely and strongly punctate- 
striate, the interstices minutely punctured, the apices conjointly rounded; underside and legs piceous or 
dark fulvous, the first abdominal segment strongly punctured. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
Numerous examples. Two specimens obtained by Mr. Smith at Dos Arroyos, 
Guerrero, are perhaps females of the same species; they are much larger, the antenne 
are longer, with three or four of the intermediate joints black, and the first joint of the 
posterior tarsi is a little shorter. One of these specimens is black above, the other 
entirely fulvous. 
2p2 
