FREDERICK BLANCHARD 
5 
the mesosterniim is truncate and without a specially developed 
striker. The tarsi have joints one to four strongly lobed or 
lamellate beneath, recalling as has been noted the genus Galba 
in Melasinae. 
DR APEXES Redtenbacher 
Our species have the tarsal claws toothed at base; the meta- 
sternum with an impressed oblique line occupjdng the position 
of the tarsal grooves in Pactopus and Aulonothroscus: the pro- 
sternum each side with two approximate carinae, a marginal and 
an inner, reaching from the coxae to the base of the anterior 
lobe: elytra with a humeral carina which is the basal termina- 
tion of a submarginal stria, the true elytral margin being below 
the carina. The carina of the basal angles of the thorax is well 
marked except in ecarinatus, where it is rather obtuse. In gemi- 
natus and niger it is very long. No sexual external characters 
except size have been noticed in any of our species. 
Table of Species 
Pronotum with long lateral carina 2 
Pronotum with short lateral carina 3 
2. Prothorax narrower than the elytra, sides sinuate before the base and nar- 
rowing in front. 
Black, elytra each with ante-median red spot or fascia . . . 1 . geminatus 
Black, immaculate var. nitldus 
Pro thorax as wide as elyd,ra at base, sides not sinuate; entirely black, elytra 
with posterior fascia of white hairs, sometimes reaching the apex 2. niger 
3 . Elytra without sutural striae 4 
Elytra with fine sutural striae reaching neither base nor apex; surface glab- 
rous or with very minute pubescence 5 
4. Black, prothorax red, pubescence more evident 3. rubricoUis 
Black, elytra quadrimaculate with red, pubescence fine and easily 
removed 4. quadripustulatus 
5. Black, elytral humeri red 5. ecarinatus 
1. Drapetes geminatus Say 
Black, shining, punctate and with rather sparse, suberect pubescence; elytra 
with a broad, red fascia a little before the middle, which may be continuous 
and rarely extends upon the epipleura, or be reduced to a spot of greater or 
less magnitude, or even in var. nitidus entirely disappear. Length 3 to 4 mm. 
Some specimens show a posterior fascia of white hairs, though 
less marked than in niger. This does not seem to depend upon 
the state of preservation or the sex, but to be purely individual. 
TRANS. AM. ENT. SOC., XLIII. 
