BIOLOGIA CENTRALI-AMERICANA. 
ZOOLOGIA. 
Class INSECTA. 
Order COLEOPTERA. 
Tribe MALACODERMATA. - 
Fam. LYCIDZ. 
Subfam. LYCINA. 
Of the three recognized subfamilies of Lycide this is the only one represented on 
the American continents, the Calochromine and Homalisine being absent. It is, how- 
ever, in the Tropical regions of the New World that the species of the family appear 
to reach their highest development ; and in Central America, accordingly, the number 
of species seems far from being exhausted at present. ‘The genera, on the other hand, 
are few, and are not capable of very distinct division. 
This being so, it would be unwise to generalize upon the distribution of particular 
genera. The family, as a whole, is rather uniformly distributed, and takes three prin- 
cipal forms—Lycus, Calopteron, and Metriorrhynchus. The first the typical form of 
Africa, the second of America, the last of the east (represented by Hros in the northern 
temperate zone). 
The association of species from the other regions with these typical genera must be 
considered a temporary expedient. We are not able, however, in the present state 
of our knowledge, to separate them. 
LYCUS. 
Lycus, Fabricius, Mant. Ins. i. p. 163 (1787). 
Reserving this genus for those species which have the head rostrate, and which also 
show any considerable inflation of the elytra, there are seven species known in Central 
America. 
BIOL. CENT.-AMER., Coleopt., Vol. III., Pt. 2, December 1880. B 
