652 STAPHYLINID-. 
Hab. Mexico, Jalapa, Cordova (Hége); Guaremana, San Joaquin, Volcan de Agua 
8500 to 10,500 feet, Cerro Zunil, Duefias, Purula, Sabo in Vera Paz (Champion). 
Very closely allied to S. consimilis, though readily distinguished by the basal joint 
of the antenne being of the same colour as the other joints; it also differs in the 
following respects: the antenne and palpi are rather more elongate, the head broader, 
the thorax a little longer and more cylindric; the punctuation of the anterior parts is 
rather coarser, but that of the hind body finer, so that a considerable contrast exists 
between the punctures of the elytra and those of the hind body; the white pubes- 
cence is considerably less conspicuous. The male has a large deep excision on the 
terminal ventral plate; the antepenultimate segment is more pubescent and slightly 
deplanate along the middle, and the two preceding segments are slightly impressed 
towards their hind margins. 
This is probably a common species ; a good series was obtained by Herr Hoge and a 
fair one by Mr. Champion. Mexican specimens vary a little in punctuation, and have 
the basal joint of the antenne sometimes dark, probably as the result of decay of the 
interior of the joint, and the tibie usually more or less pallescent towards the extremity. 
The Guatemalan examples are generally slightly more coarsely punctate, and have the 
tibie more distinctly pallid and the male characters rather less developed. 
28. Stenus alticola. 
Niger, breviter parciusque albido-pubescens ; antennis palpisque flavis, illis articulo basali nigro; fortiter 
punctatus ; tarsis fusco-albidis. 
Long. 52 millim. 
Hab. GuatTeMALA, Quezaltenango 7500 feet (Champion). 
Extremely closely allied to 8. consimilis, but of rather shorter and more robust build, 
with the punctuation of the anterior parts, especially of the elytra, and of the apical 
abdominal segments, coarser; the thorax is about as long as its greatest width. Three 
female examples. 
29. Stenus incognitus. 
Niger, subnitidus, evidenter albido-pubescente ; antennis palpisque testaceis, illarum clava fusca, articulo basali 
nigro; femoribus basi rufo, extrorsum tibiisque ex parte majore nigricantibus, his ad apicem tarsisque 
testaceis ; dense punctatus, abdomine obsolete punctato. 
Long. 5-53 millim. 
Hab. GUATEMALA, near the city, Duefias (Champion). 
Antenne rather short, the basal joint dark. Head obscurely bisulcate, the vertex 
in the middle broadly convex. Thorax short, rounded at the sides and narrowed 
behind, densely and somewhat finely punctate. Elytra rather closely and moderately 
coarsely punctate, not elongate, but distinctly longer than the thorax. Hind body 
