STENUS. 655 
Though very similar to 8. alumnus this insect is no doubt distinct; it is more 
distinctly pubescent, has a more uneven head, shorter thorax, and male characters 
similar to S. docilis. Only four examples have been obtained (including one male), and 
I am by no means sure they are all one species. The type is from Tolé. 
35. Stenus segnis. 
Niger, vix subseneus, nitidus, fortiter punctatus; antennis, palpis pedibusque testaceis, illis extrorsum nigris ; 
capite parvo, fere plano; elytris quam prothorax parum longioribus. 
Long. 3} millim. 
Hab. Panama, near the city (Champion). 
Differs from S. alumnus in its coarser, less rugose sculpture and more shining 
surface; from S. docilis, to which it is very similar in sculpture, by its smaller size 
shorter thorax, and flatter head; and from S. addendus by its less brassy colour, shorter 
and more coarsely punctured elytra, and flatter head. 
We have received only four examples, all females. 
36. Stenus eremitus. 
Brevis, nigro-subsneus, nitidus, tenuiter albido-pubescens, fortiter punctatus; antennis, palpis pedibusque 
testaceis, his femoribus extrorsum tibiisque brunnescentibus, tibiarum basi indiscrete flavo-cingulato ; 
capite in medio obsolete carinato ; abdomine minus argute punctato. 
Long. 33 millim. 
Hab. Muxico, Vera Cruz (LHége). 
Antenne moderately long. Head small, rather finely and irregularly punctate, the 
small median space separating the obscure grooves shining. Thorax rather longer 
than broad, much rounded at the sides, moderately coarsely but rather irregularly 
punctate, with a small indefinite shining space on the middle. Elytra longer than the 
thorax, rather coarsely punctate. Hind body rather sparingly and indistinctly, the 
basal segment more distinctly, punctate; the segments at their base furnished with 
very distinct white pubescence. The male has a small excision on the last ventral 
plate. Unique. 
This little insect, though closely allied to the foregoing, makes a considerable 
approach in some of its details to the next group, but it appears almost equally close 
to S. addendus ; the elevation on the middle of the head is much less conspicuous 
than it is in the next group. 
§ 3. Head with a sharply defined shining elevation on the middle ; legs 
variegate or dark. 
This group contains some very remarkable forms with irregularly distributed 
punctuation and highly polished interstices; the more insignificant species in it are 
allied to the North-American S. callosus, Er. In a few species the variegation of the 
legs is confined to an infuscation of the extremities of the femora. 
