388. HETEROMERA. 
genus ranging from the Southern United States* to the Argentine Republic. No less 
than forty-four species are here enumerated from Central America; twenty-five of these 
were captured by myself in Guatemala or the State of Panama. The equally numerous 
South-American forms stand greatly in need of revision, several of those described by 
the older authors being quite unrecognizable from the descriptions. 
Important specific characters are to be found in the secondary sexual organs or 
cedeagus of the males, as will be seen from a reference to our figures; and also in other 
sexual marks of distinction mentioned in the following descriptions. 
The genus might be further divided by the separation of those species which have 
the four basal joints of the intermediate, as well as those of the anterior, tarsi lobed 
beneath in the males, and also by the extraction of those having the four basal joints 
of the anterior tarsi in the males and the penultimate joint of the intermediate and 
hind tarsi in both sexes (Monoloba, Sol.) lobed beneath ; these characters, however, are 
subject to variation. In some species the females have one or two joints, in addition 
to the penultimate one, of the anterior and intermediate tarsi lobed beneath. 
L. gigantea may possibly on the discovery of the male have to be removed to another 
genus. J. nitida and the following six species form a little group known to me only 
as yet from Central America. In Z. tenuicornis the anterior tibie in the male are 
simply curved, and the penultimate joint of the four anterior tarsi is very narrowly 
lobed beneath. Some few species, L. acutangula, L. mexicana, &c., have the elytra 
sharply pointed or mucronate at the apex in the female; two, Z. cariniventris and 
LL. irazuensis, have the venter longitudinally carinate in the middle in the male. The 
chief characters for the genus lie in the anterior face of the prosternum being more or 
less vertically inclined, the head resting on this part in repose; and in the large eyes, 
especially in the males. The base of the prothorax is more strongly bisinuate than 
in the Central-American species of Allecula. 
The different species are found beneath loose bark or by beating the withered 
branches of fallen trees, and also upon herbage ; one or two are gregarious in their habits. 
Sect. I. Anterior tarsi in the male with the four basal joints more or less lobed and 
produced beneath, the penultimate joint of all the tarsi strongly so in both 
sexes ; body pubescent. (Monoloba, Sol., Lacord.) 
1. Prosternum horizontal, subacuminately produced, and received by the deeply 
excavate mesosternum. 
1. Lobopoda gigantea. (Tab. XVII. fig.1, ¢.) 
Elongate, broad, rather depressed, dark bronze, shining, thickly clothed with ashy pubescence. Head 
very irregularly, somewhat closely, and rather coarsely punctured ; eyes (@ ) moderately large, widely 
* The North-American Allecula punctulata (Melsh.), A. erythrocnemis (Germ.), and A. atra (Say) belong to 
this genus as here understood. 
