STAPHYLINUS. 379 
This species, of which I have seen but a few examples, is apparently variable, the 
hind body being sometimes fusco-ferruginous instead of black; and in the example 
from Jalapa the tibie are in larger part black. The specimens from Juquila belong to 
a remarkably small and slender variety, with the hind body towards the extremity in 
large part red. The unique individual from Guatemala is in bad preservation, and is 
possibly a different species, the dark marks on the head and thorax being of great 
extent and the pubescence apparently fuscous. 
20. Staphylinus affinis. 
Staphylinus affinis, Solsky, Hor. Soc. Ent. Ross. v. p. 126°. 
Hab. Mexico }, near the city (Mohr), Oaxaca, Mirador, Cerro de Plumas, Maltrata 
(Hoge), La Parada (Sallé) ; Guatemata, Zapote, San Gerdnimo (Champion). 
This is another species variable within the limits of Mexico, and extremely close to 
some of the varieties of S. fuscomaculatus. From Guatemala I have seen only three 
examples; they are very aberrant from the Mexican examples, but do not agree sufii- 
ciently with one another to allow me to distinguish them by any satisfactory character. 
21. Staphylinus discretus. 
Niger; elytris saturate rufis, tibiis tarsisque fusco-testaceis; abdomine in medio minus conspicue bifariam 
nigro-maculato; capite thoraceque fortius punctatis, hoc in medio linea lata impunctato. 
Long. 16 millim. 
Hab. Mexico, Las Vigas (Flohr). 
Antenne rather short, evidently thickened externally, black; second joint red at its 
articulation. Head rather small, distinctly narrowed in front; eyes occupying less 
than one half of the sides. Thorax short, quadrate, straight at the sides, with very 
coarse punctuation, and with a broad smooth space along the middle, continuous with 
which is a smooth line on the posterior part of the head. Elytra obsoletely punc- 
tate, of a pale, sordid red colour, scarcely nebulose. Hind body black, but little 
variegate. 
Although I have only a single example in very abraded state at my disposal, and 
it is very similar to the smallest, dark examples of S. affinis, yet I have no doubt it is 
distinct, and will be recognized by the broader smooth space on the thorax ; fresh 
examples will probably prove to have a rather scanty black pubescence on the head, 
thorax, and elytra. 
92. Staphylinus marcidus. . _ 
Niger; capite thoraceque fusco-subseneis, nigro-pubescentibus ; elytris fusco-rufis, fusco-nebulosis ; abdomine in 
medio bifariam nigro-bimaculato, tibiis prope geniculos plus minusve late sordide testaceis; corpore 
subtus parce griseo-pubescente. 
Long. 20 millim. 
3 CC 2 
