470 STAPHYLINIDA. 
Hab. Guatemata, Coban in Vera Paz (Champion); Nicaragua, Chontales (Janson) ; 
Costa Rica, Cache (fogers). 
This species is readily distinguished by the very elongate slender apical portion of 
the mandibles and the broad head, the latter with unusually dense but less coarse 
punctuation than in the allied forms. The antenne are rather stout, but not thicker 
towards the extremity; the penultimate four joints similar to one another, evidently 
transverse. ‘The head behind is convex, its angles broadly and regularly rounded. 
Only one example was sent from each locality. 
6. Sterculia puncticeps. 
Purpurea, nitida ; capite sat lato, posterius rotundato-truncato, supra opaco densissime fortiter punctato, subtus 
nitidissimo densissime grosse punctato; prothorace gracili, ad latera tantum obsolete punctato, utrinque 
vix impresso ; elytris obsolete, parce punctatis. 
Long. 22 millim. 
Hab. Costa Rica (Van Patten). 
This is one of a group of species distinguished by the more slender thorax, which is 
only indistinctly impressed. S. puncticeps is remarkable on account of the great 
development of the punctuation on the under surface of the head. The antenne are 
moderately slender, not thicker towards the extremity, the penultimate four joints sub- 
equal, transverse, but not strongly so; the mandibles are only of moderate length. 
Only one example has been procured. 
7. Sterculia discedens. 
Minor, lete viridi-cyanea, nitida; capite convexo, dense minus rugose punctato; prothorace minus gracili, 
subleevigato, margine laterali pone medium conspicuo; elytris parce minus obsolete punctatis. 
Long. 15 miilim. 
Hab. Guatemata, Quiche Mountains 7000-9000 feet (Champion). 
This is quite dissimilar to any other species of the genus. The antenne are stout, 
a little thickened towards the apex, with the penultimate joints strongly transverse ; and 
the apical portion of the mandibles is rather elongate. The punctuation of the head 
is less rugose than in the other species, so that the interstices are distinctly shining. 
The thorax has no distinct lateral impression, but appears nevertheless to be somewhat 
impressed at the side some distance in front of the base, owing to the lateral margin 
being remarkably elevated at this spot; it bears numerous long erect hairs, but has no 
punctuation. The punctuation of the wing-cases and hind body, though fine and 
distant, is less obsolete than in other species, and on the under surface of the head the 
punctures are very dense at the base. 
Only one example was met with. 
