320 STAPHYLINID. 
6. Megacronus minor. 
Gracilis, niger; antennarum basi, palpis pedibusque flavis ; elytris minus dense et fortiter seriatim punctatis ; 
antennis articulo penultimo leviter transverso ; abdomine minus crebre vix subtiliter punctato. 
Long. 4 millim. 
Hab. Guatemaa, Chiacam in Vera Paz (Champion). 
Besides the dark elytra this little insect has other good characters to distinguish it 
from MW. regularis, the antenne being rather more elongate, and the punctuation of the 
elytra much less distinct and regular, only four or five rather indefinite series being — 
distinguishable on each. 
Only one example has been found. 
MYCETOPORUS. 
Mycetoporus, Mannerheim, Brachel. p. 62. 
About fifty species are comprised in this genus, which, outside of the Palearctic and 
Nearctic regions, possesses but a single East-Indian species. 
1. Mycetoporus coxalis. (Tab. VII. fig. 20.) 
Gracilis, elongatus, niger; antennarum articulo primo femoribusque testaceis; capite, thorace elytrisque niti- 
dissimis, his punctorum serie suturali aliaque discoidali. 
Long. 6 millim. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
Antenne elongate, evidently thickened towards the apex; tenth joint longer than 
broad ; palpi fuscous; head narrow, attenuate in front. Thorax not so long as broad, 
with the anterior angles greatly deflexed. LElytra elongate, much longer than the 
thorax, with a regular sutural series of about twelve punctures, and a similar discoidal 
series, and close to the epipleural margin a rather less distinct series. Hind body 
slender, elongate and very acuminate, each segment at the base somewhat closely and 
finely punctate, but behind only sparingly punctate. Legs elongate; hind tarsi 
especially very long. Posterior coxe extremely large. The male has a broad but not 
deep emargination in the hind margin of the last ventral plate. 
Only one individual has been brought back. 
Subfam. STAPHY LININAE. 
Group QUEDIINA. 
This group has hitherto been defined by characters that are only variable and 
inconstant, and has been isolated rather on account of the facies of its components than 
for any other reason. There exists, however, a constant character that has hitherto 
escaped observation, although it defines and limits the group in a quite satisfactory 
manner, viz. that the prosternum is connected with the sides of the thorax behind the 
front angles, these being consequently free. 
