QUEDIUS. 333 
10. Quedius arrogans. (Tab. VIII. fig. 7.) 
Niger, nitidissimus; abdomine iridescente, parce punctato; capite orbiculato; elytris paullo longioribus 
quam prothorax, punctis nonnullis setigeris conspicuis impressis. 
Long. 11-12 millim. 
Hab. Panama, Volcan de Chiriqui, at elevations between 2000 and 6000 feet 
(Champion). | 
This species has a very broad head; and the head, thorax, and elytra are of a very 
shining intensely black colour ; the upper surface of the hind body is strongly iridescent, 
the basal portions of some of the middle segments being indeed occasionally of a lurid 
red colour. ‘The mandibles are piceous at the apex. The disposition of the few 
punctures on the elytra is much the same as it is in Q. graciliventris, but the punctures 
themselves are not so small as in that insect. The two apical segments of the hind 
body are quite sparingly punctured; the one preceding them is still more sparingly 
punctate, except at the base, and the two basal segments are punctate only at the base, 
the punctuation not being reduced, however, to a single transverse series. ‘The anterior 
tarsi are of dark colour and are very broad. In the male the emargination of the 
tip of the apical ventral plate is preceded by a rather elongate depression of the 
surface. 
Four individuals have been found. 
11. Quedius flavicaudus, 
Niger, nitidissimus ; abdomine opalescente, apice late rufo-testaceo, capite anterius plus minusve rufescente ; 
antennarum basi, mandibulis, palpis tarsisque anterioribus piceis vel rufis; elytris vix longioribus quam 
prothorax, punctis nonnullis setigeris conspicuis impressis; capite transversim orbiculato. 
Long. 11-12 millim. 
Hab. Panama, Volcan de Chiriqui between 2000 and 4000 feet, Bugaba (Champion). 
This insect has the two apical segments of the hind body as well as the terminal 
styles bright red or yellow; the apical segments are but sparingly punctate, the one 
preceding them not quite so sparingly, especially at its base; the three basal segments 
have some punctures at the base and sides of each, but those on the basal segment are 
only very few; when fully extended it is seen that the red colour of the penultimate 
segment leaves the extreme base dark. The colour of the front of the head and of the 
base of the antennee is apparently rather variable. The male has a broad, not deep, 
emargination at the middle of the tip of the last ventral plate. 
Several specimens have been found of this species. A very similar but distinct form 
occurs at Rio de Janeiro. 
12. Quedius rufinasus. 
Niger, nitidissimus ; abdomine apice late testaceo ; capite orbiculato, anterius late rufescente; palpis, mandibulis 
tarsisque rufis; elytris haud longioribus quam prothorax, punctis nonnullis setigeris magnis impressis. 
Long. 10 millim. 
