~DIABROTICA.—AGELASTICA. 333 
Hab. Panama, Chiriqui (coll. Jacoby). 
D. ribbei may be chiefly recognized by the pattern of the elytra. The head is 
impunctate; the antenne extend to the middle of the elytra, and have their fourth 
joint slightly longer than the third, both being of elongate shape ; the thorax is nearly 
twice as broad as long, impunctate, and with a distinct fovea on each side; the elytra 
are finely and not very closely punctured, and the sutural spot surrounds the scutellum, 
the entire posterior third being black and shining; the underside and legs are black, 
the extreme base of the femora having a yellow spot. A single specimen. 
165. Diabrotica (?) antennata. (Tab. XLIII. fig. 15.) 
Black ; the antenne, head, thorax, and legs fulvous; thorax bifoveolate, impunctate ; elytra finely punctured, 
flavous, the suture anteriorly, a sublateral band, and three spots placed longitudinally near the suture, 
black. 
d. Face excavated anteriorly; the third joint of the antenne very elongate, and thickened towards the 
apex. 
Length 23 lines. 
Hab. Mexico (Sallé, ex coll. Sturm). 
Of this curious species there is a single specimen in Sallé’s collection; it is labelled 
Diabrotica scutellata, Sturm. The claw-joints being all broken off I am unable to say 
whether the species really belongs to Diabrotica. The head is transversely excavate at 
its lower portion ; the palpi are strongly incrassate ; and the antenne have their third 
joint extremely long and gradually thickened, the other joints being comparatively 
short. The thorax is about one-half broader than long, impunctate and bifoveolate. 
The sutural stripe of the elytra extends to one-third of their length and is pointed at 
its apex ; the lateral band does not quite reach the apex and is indented at the middle ; 
of the three spots placed near the suture, the first is small and antemedian, the second 
is large, ovate, and placed below the middle, and the third is elongate and does not 
extend to the apex. 
AGELASTICA. (To follow the genus Diabrotica, p. 569.) 
Agelastica, Redtenbacher, Fauna Austriaca, ed. 1, p. 525 (1849). 
I refer, with some doubt, a single species from Mexico to this genus, which contains 
but few representatives, and has not hitherto been recorded from our region. In the 
Mexican insect, however, the tibie are all armed with a spine, the first joint of the 
posterior tarsi is as long as the following two joints together, the claws are appendicu- 
late, and the anterior coxal cavities are open. In its general shape and appearance 
A. viridis differs considerably from the European A. aini. 
