630 STAPHYLINIDZ. 
2. Heteroleucus mexicanus. 
Parum elongatus, niger ; capite prothoraceque nitidissimis, elytris rufis, parce fortiterque punctatis ; antennis, 
palpis pedibusque albido-flavis ; abdominis lateribus cinereo-pubescentibus, apice rufo. 
Long. 11 millim. . 
Hab. Mexico, Yautepec, Morelos (Flohr) ; GUATEMALA (Sallé). 
Though very similar to H. marginatus this insect is well distinguished by the longer 
thorax, the length of this part being slightly greater than the width, and the more 
sparingly punctured elytra and hind body; the extremity of the hind body is immaculate 
red. In the male the last ventral plate is a little prolonged in the middle, and has 
the extremity almost rounded and the sides a little sinuate. 
CEDODACTYLUS. 
Cidodactylus, Fairmaire et Germain, Ann. Soc. Ent. Fr. 1861, p. 441; Fauvel, Bull. Soc. Linn. 
Normand. 2nd ser. i. p. 22. 
This distinct genus comprises one (possibly two) Chilian and two Amazonian 
species. 
1. Gdodactylus fauveli. (Tab. XVI. fig. 19.) 
Piceus ; antennis, palpis pedibusque testaceis, his sordidis ; capite prothoraceque parce punctatis, nitidulis ; elytris 
abdomineque dense punctatis, subnitidis. 
Long. 8 millim. 
Hab. Mexico, Cordova (Hoge), Morelos (fohr). 
Antenne slender, each joint from the fourth to the tenth decreasing slightly in 
length, the first four or five joints differing but little from one another in length. 
Head small, rather sparingly and finely punctured. Thorax slightly longer than 
broad, considerably narrower than the elytra, distinctly narrowed behind, moderately 
closely and rather finely punctate. Elytra rather longer than the thorax, emarginate 
behind, deeply and closely punctate. Hind body cylindric, immarginate, coarsely 
punctate, distinctly pubescent. Male with a small angular excision on the hind margin 
of the last ventral plate. 
This species is closely allied to the Chilian @. fusco-brunneus, but is rather smaller, has 
_the head shorter, more truncate behind, and with smaller eyes, the punctuation of the 
head less distant, and that of the hind body not at all obsolete. The examples sent by 
Mr. Flohr have the legs more or less piceous, due no doubt to their being in very 
decayed condition. 
I have named this interesting Mexican insect after the distinguished Coleopterist to 
whom we owe the larger part of our knowledge of Chilian Staphylinide, M. Albert 
Fauvel, of Caen. 
