772 SUPPLEMENT. 
Pelosoma sordidum (p. 109). 
To the localities given, add :—Panama, Bugaba ( Champion). 
8 (a). Pelosoma ovulum. 
Ovale, sat convexum, crebre punctatum, rufescens, nitidum ; 
Long. 24, lat. 17 millim. 
Hab. Mexico, Amecameca (Hége). 
This obscure little insect is no doubt quite distinct from the other species of our 
region, as it has the mesosternal process considerably more slender. The series of 
punctures on the wing-cases are not in the least deeper behind, and the outer series are 
scarcely coarser than the sutural ; the marginal series is not crooked. The punctures of 
the thorax and of the elytral interstices are distinct and rather numerous. Three 
elytris subtiliter seriatim punctatis, substriatis. 
examples. 
NITIDULODES (p. 112). 
Nitidulodes jansoni (p. 112). 
To the locality given, add :—Panama, Bugaba (Champion). 
Found at the sap of fallen trees in the forest-region of the low country. 
OOSTERNUM (p. 112). 
Oosternum costatum (p. 113). 
To the localities given, add:—Panama, David (Champion). 
MEGASTERNUM (p. 118). 
Megasternum strigicolle (p. 113). 
Before the localities given, insert :—Mexico, Cordova (Hoge). 
HETEROCERUS (p. 116). 
1(a). Heterocerus americanus. 
Minor, angustus, parallelus, testaceus, corpore subtus capiteque plus minusve infuscatis ; omnino subtilissime 
punctulatus, pubescens, opacus. 
Long. 3 millim. 
Hab. Norta America, Arizona (Morrison).—Mexico, Northern Sonora (Morrison), — 
Yautepec in Morelos (Flohr). 
This insect is very closely allied to H. debilis, but is larger and not quite so convex, 
and possesses an extremely fine basal margin on each side of the thorax. H. americanus 
still more nearly resembles H. flavidus of South Europe; but that species is scarcely so 
elongate, and has the thoracic margin more distinct, though the differences are very 
