564 STAPHYLINID. 
quite obsoletely and sparingly punctured, except at the hind angles, where there is a 
fine rugose punctuation ; eyes occupying less than one half of the length of the sides. 
Thorax strongly transverse, its punctuation scanty and quite obsolete. LElytra very 
indistinctly punctuated, the infuscation of their extremity indefinite. 
In addition to the different coloration, this insect has longer antenne and smaller 
eyes than the preceding. Unique. 
8. Scioporus parvidens. 
Fusco-rufus, capite prothoraceque piceis, hoc dilutiore; antennis elytrisque ferrugineis, his apicem versus 
fuscescentibus, pedibus testaceis ; capite prothoraceque crebrius sat fortiter, minus regulariter punctatis. 
Long. 4 millim. 
Hab. GuaTEMALA, Chiacam in Vera Paz (Champion). 
Antenne small, a little thickened at the apex; basal joint unusually long, nearly 
equal to the first, second, and third together ; third joint small, rather smaller than 
the second. Mandibles tridentate, but the teeth very small, the basal one of the right 
mandible in fact only barely indicated. Labrum large, distinctly excised. Head rather 
broad and short, closely and finely rugose-punctate, the disc smoother. Thorax closely 
and rather coarsely punctate, with a narrow smooth line down the middle. Elytra longer 
than the thorax, closely and rather finely rugose-punctate. 
Only one example, in bad preservation. 
9. Scioporus latifrons. (Tab. XIV. fig. 19.) 
Latior, subdepressus, fusco-niger, elytrorum humeris apiceque ferrugineis, antennis pedibusque rufis; dense 
subtilissime punctatus; capite latiore, membrana clypeali majore. 
Long. 53 millim. 
Hab. Panama, Volcan de Chiriqui (Champion). 
Antenne rather slender, the first joint as long as the second and third together, the 
latter much longer than the second, the penultimate joint scarcely longer than broad. 
Head broad and flat, extremely densely and finely punctate, the sides and the hind angles 
a little rounded; the mandibles elongate, the pallid membrane between the clypeus and 
labrum remarkably large, the clypeus behind it obscurely margined. Thorax transverse, 
like the head very densely and finely punctate, very slightly narrowed behind. Elytra 
elongate, densely and finely punctate, blackish, with the shoulder and hind margin 
ferruginous. Terminal joint of tarsi elongate, on the posterior foot about equal to the 
three basal joints together. Male with a moderately deep excision in the last ventral 
plate. 
A small series of this species was found, but they are in a very decayed state. In 
fresh examples there would probably be numerous long sete present *. 
* It may prevent confusion to describe a very closely allied species found at Rio Janeiro by Squire. 
Scioporus breviceps, n. sp. SS. latifronti persimilis, capite breviore, subtransverso abdominisque segmento 
ultimo in mare profundius exciso, tantum fere differt. 
