QUEDIOMAORUS. 339 
and thus it is that the space between the hind margin of the eye and the neck is much 
shorter than in Q. émpunctus, and that the postocular puncture on the temple is much 
nearer the eye. 
The male has a broad, shallow emargination at the tip of the last ventral plate. 
ight specimens have been found at Cerro Zunil, and one at San Gerénimo; they 
show no variation. Like its congeners, it lives under bark of dead trees. 
QUEDIOMACRUWS. 
Antenne crasse, subfusiformes ; genee distincte, immarginatew. Prothoracis margines anguste, parum inflexe. 
Tarsi posteriores breves, subdeplanati, subtus ciliis elongatis adpressis vestiti. 
The genz though destitute of a raised margin are separated by a distinct suture from 
the under surface of the head. The mandibles are large and the left one is furnished 
in the middle with two powerful teeth, the lower of which is broad and truncate or 
emarginate ; the right mandible has a single smaller tooth, with a second very minute 
tooth or tubercle above it *; the eyes are not at all prominent. The side piece of the 
prothorax is very narrow and outside the insertion of the coxe is not bent upwards, so 
that the margin of the thorax does not show there a sharp edge; there is a large horny 
stigmatic shield. ‘The hind femora are armed with a series of short spinules. 
The genus is allied to Quedius, but the short and broad, rigid hind tarsi (each joint 
of which bears on the under surface a series of rigid adpressed ciliz not interrupted in 
the middle) are sufficiently diagnostic, and it possesses in addition other peculiarities 
only exceptionally found in the genus Quedius. It may probably prove to be peculiar 
to the Central-American region. 
1. Quediomacrus puniceipennis. (Tab. VIII. fig. 9.) 
Staphylinus puniceipennis, Sturm, in litt. 
Quedius puniceipennis, Solsky, Hor. Soc. Ent. Ross. v. p. 123°. 
Hab. Mexico !, Puebla (Sallé), Esperanza (Hoge). 
2. Quediomacrus pollens. 
Subdepressus, nigerrimus, nitidus ; capite anterius obsolete punctulato, prothorace fortiter transverso, lateribus 
ante angulos posteriores sinuatis. 
Long. 20-28 millim. 
Hab. GUATEMALA, near the city and at Purula (Champion). 
This is very closely allied to Q. punicetpennis, but is more depressed, has the wing- 
cases deep black in colour, and has the antenne rather longer and thinner. 
The specimen captured at Purula was flying through the forest ; the three examples 
from Guatemala city were found under bark. 
* In the figure on Tab. VIII. of Q. puniceipennis, the artist has represented the right mandible as similar to 
the left ; but this is incorrect. 
2XX2 
