4392 STAPHYLINIDA. 
Hab. Nortu America (coll. Castelnaw).—Mexico, Oaxaca (Hége); GUATEMALA 
(Salvin), near the city (Champion) ; Honpuras (Sal/é). 
This is similarly coloured on the upper surface to Belonuchus formosus, but beneath 
the anterior part of the breast and the four front coxe are black ; it is also much larger 
than B. formosus, and the spines on the hind femora of the male consist of a few 
closely placed, and confined to the basal third of the femur. The male has only a slight 
emargination on the last ventral plate. 
Although the male characters of this species and Philonthus xanthomelas are so 
different, I am not able to point out any certain character for distinguishing the females 
of the two; usually in P. xanthomelas the metasternum is black, but I have one male 
individual in which it is red, and if a similar variety should occur in the female I do not. 
see how it could be distinguished from B. pollens. 
The locality North America is given on the authority of an example from Castelnau’s 
collection labelled “ Philonthus extremus, Chev., Am. bor.” 
8. Belonuchus iridescens. 
Belonuchus iridescens, Solsky, Hor. Soc. Ross. v. p. 140°. 
Hab. Mexico 1. 
9. Belonuchus erythropterus. (Tab. XI. fig. 13.) 
Belonuchus erythropterus, Solsky, Hor. Soc. Ross. v. p. 187°. 
Hab. Mexico |, Oaxaca (Hoge), Guanajuato, Cuernavaca, Puebla (Sal/é).—VENEZUELA 
(coll. Sharp). 
A large series of this species, varying excessively in size and development, from 11 
to 21 millim. in length, was met with by Hoge. The male characters are but slight, 
confined, in fact, to an emargination of the apical ventral plate; the other abdominal 
characters mentioned by Solsky as indicating this sex being only visible in certain 
individuals, and dependent on slight peculiarities of the shape and sculpture of the hind 
body, both of which are very remarkable in this species. Sallé considers the species in 
his collection to be Say’s Staphylinus ephippiatus. 
The figure is that of a large variety of the male from Guanajuato, in which the last 
segment is scarcely emarginate. 
10. Belonuchus simplex. 
Nigerrimus; elytris rufis; abdomine crebre punctato, haud dilatato, punctis setigeris conspicuis tamen nec 
STOSsIS.: 
to} ° 
Long. 10-15 millim. 
Hab. Mexico, Oaxaca (Hoge), Vera Cruz (coll. Castelnau). 
Extremely similar to B. erythropterus, but with the hind body of normal shape and 
