418 STAPHYLINIDZ. 
58. Philonthus zunilensis. 
Rufus ; capite cum antennis palpisque, thorace abdominisque apice nigris; elytris abdomineque parcius 
-punctatis. 
Long. 11-13 millim. 
Mas. Trochanteribus posterioribus breviter prolongatis, acutis, femoribus basi excavata; segmento 7° ventrali 
apice subprolongato, haud emarginato. 
Fem. Trochanteribus posterioribus parum prolongatis, apice acuto, femoribus basi simplice. 
Hab. Guatemaa, Cerro Zunil 4000 to 5000 feet (Champion). 
This species presents an almost exact resemblance in appearance to Belonuchus 
formosus,but is much larger and has the scutellum pale; this last named character is 
peculiar to it, all the numerous similar species having the scutellum black. All the 
coxe and the whole of the breast are pale. 
Only four examples were captured. 
59. Philonthus basiventris. 
Nitidus, nigerrimus; elytris et abdominis medio rufis, pedibus testaceis; elytris abdomineque pareius punctatis, 
nitidioribus. 
Long. 9-11 millim. 
Mas. Capite majore, mandibulis ad basin extus oblique dilatatis, femoribus anterioribus, ultra medium longius 
spinosis. 
Hab. Mexico, Cordova, Puebla, Yolos (Sallé), Oaxaca (Hoge), Jalapa (Flehr). 
This species is very closely allied to P. zanthomelas, the male characters being the same ; 
but P. basiventris will be readily identified by the two basal segments of the hind body 
being black instead of red, as well as by the very distant punctuation of the elytra; the 
black colour of the two+basal segments is on the under surface only partial, the two 
segments being in greater part red beneath; though the breast is quite black, the legs, 
including all the coxe except the hind ones, are clear yellow. 
60. Philonthus alternans. (Tab. XI. fig. 7.) 
Rufus; capite cum antennis, thorace, scutello abdominisque dimidio apicali nigris; pedibus testaceis, coxis 
anterioribus fuseis ; elytris abdomineque parce punctatis. 
Long. 10 millim. 
Mas. Trochanteribus posterioribus elongatis, apice recurvo, femoribus basi angusta. 
Fem. Trochanteribus femoribusque posterioribus simplicibus. 
Hab. Mexico, Jalapa (fohr), Oaxaca (Hoge). 
Extremely similar to the largest specimens of B. formosus, but readily distinguished 
from them, as well as from its other allies, by there being three instead of two segments 
black at the apex of the hind body. Although the male trochanters are similar to those 
of P. trochanterinus, yet in P. alternans the terminal styles are simple, and the last 
ventral plate is not emarginate, agreeing in these respects with P. zunilensis. 
I have seen only three examples. The figure is taken from one of two females sent 
by Mr. Flohr. 
