STAPHYLINID A. 789 
Hab. Muxico, Tehuantepec (Hége). 
Antenne long and slender, not thicker externally, black, the basal joint more pallid 
beneath. Head rather closely punctate, with a large space on the middle and a smaller 
one behind the labrum smooth. Thorax elongate parallel, the lateral punctuation 
irregular, rather numerous. Elytra with rather close and definite punctuation. Hind 
body rather closely punctate, subgrisescent. The front tarsi are very slightly dilated in 
the female, more distinctly dilated in the male; in the latter sex there is a small 
angular notch on the last ventral plate. 
This species approaches closely to the genus Actobius, but the basal joint of the hind 
foot is just perceptibly longer than the terminal one. 
BELONUCHUS (p. 428). 
Belonuchus flavipennis (p. 430). 
To the Mexican localities given, add:—Tula in Hidalgo (Hége). 
We have now received a fair series of this species exhibiting little or no variation. 
The male has only a very slight emargination of the hind margin of the last ventral plate. 
Belonuchus erythropterus (p. 432). 
To the Mexican localities given, add :—Tehuacan and Cholula in Puebla, Tula in 
Hidalgo, Mexico city (Hége). 
This insect varies greatly in size; all the examples (about twelve) from Tehuacan 
belong to a large form of which no specimens occurred among the large series found at 
Tula. There may be two species still mixed under this name, but I cannot distinguish 
them by any constant character other than that of size. 
Belonuchus simplex (p. 432). 
To the Mexican localities given, add :—Acapulco in Guerrero (Hége). 
Herr Hége has now found a fair series of this species, and although very closely allied to’ 
B. erythropterus it appears to be really distinct. In this group of species of Belonuchus 
there exists a peculiar transverse band at the base of each of the basal dorsal plates of 
the hind body, developed at the expense of the true basal margin, which is very much 
reduced in extent; the band bears a very fine sculpture, and is elevated so as to be 
separated by a sharp line of demarcation from the rest of the segment. This band of 
sculpture does not exist as above described on the antepenultimate segment in B. simplez ; 
it is, however, present in B. erythropterus. 
13. Belonuchus viridipennis. 
Belonuchus viridipennis, Baudi, Studi Ent. p. 125'. 
Belonuchus dejectus, huj. op. p. 433. 
