A472 HETEROMERA. 
from above), the shoulders prominent, each with nine rather irregular rows of moderately coarse punctures 
placed upon shallow striz, the punctures becoming a little finer towards the apex, the interstices almost 
flat (or very feebly convex) and finely and thickly punctured throughout ; legs and under surface obscure 
testaceous. 
Length 4-5 millim.; breadth 33-4 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Found in abundance by myself in Chiriqui, in old forest-clearings. This species may 
be at once separated from the others noticed here by its thickly punctured elytral inter- 
stices; it resembles WV. sallw@i in its general shape. N. chiriquensis and N. fulvo-pilosus 
are smaller than any other species of the genus yet described. 
Fam. MONOMMIDZA. 
This family was formerly placed between the Throscide and the Eucnemide; but it 
is now generally regarded as belonging to the Heteromera. Two genera only have 
hitherto been described, one from the Eastern and one from the Western hemisphere ; 
we have to notice a third from Central America. The characters of the family as given 
by Lacordaire, Thomson, Leconte, and Horn now require modification, the new genus 
here described having a 2-jointed club to the antenne. 
HYPORHAGUS. 
Hyporhagus, Thomson, Ann. Soc. Ent. Fr. 1860, p. 25. 
This New- World genus contains twenty-one described species, the majority of which are 
from Tropical South America: four are known from the southern United States, two from 
Mexico, two from the Antilles, and one from as far south as Monte Video. Hyporhagus 
is closely allied to Monomma and is chiefly distinguished from that genus by the 
rounded (not emarginate) anterior outline of the thorax. We have now to record eight 
species of Hyporhagus from Central America, three of which are described as new. 
One species has been found beneath fallen Opuntias ; those captured by myself were 
beaten from herbage, or from the withered branches of fallen trees. 
The Central-American representatives may be tabulated as follows :— 
Upper surface dull. 
Elytra with costate strie . . . . . . ee ee ee) ocostulatus. 
Elytra punctate-striate. 
Thorax long and strongly margined . 
opuntie, gilensis. 
Thorax shorter and more feebly margined . 
durangoensis. 
