558 STAPHYLINIDA. 
3. Neomedon sallzi. 
Latus, niger, capite, prothorace, elytris, antennis pedibusque rufis; capite prothoraceque parce punctatis, hoe 
fortiter transverso, ad latera leviter impresso. 
Long. circiter 7 millim. 
Hab. Mexico, Jacale (Sallé). 
Third joint of the antennz not twice as long as the second. Head large, a little 
curvate at the sides; the punctuation rather coarse and sparing, absent from the _ 
discoidal part. Thorax very short, the sides a little impressed, so as to have a slightly 
concave appearance, the surface sparingly subobsoletely punctate, with a broad smooth 
space along the middle, which behind is indistinctly canaliculate. Hlytra broad and short, 
rather sparingly and coarsely punctate. Hind body obscure reddish towards the apex. 
The unique example of this very distinct species is in bad preservation ; itis a male, 
and has a broad, shallow, rounded emargination on the last ventral plate. 
4, Neomedon mexicanus. 
Parum latus, subdepressus, niger, elytris, antennis pedibusque rufis, his femoribus piceis ; capite prothoraceque 
dense fortiterque punctatis, hoc tenuiter canaliculato; elytris crebre subrugulose punctatis. 
Long. 53 millim. 
Hab. Mexico, Volean de Orizaba (Sallé), Las Vigas (Flohr), Jalapa, Cordova 
(Hoge). 
Antenne rather small, the third joint a little longer than the second. Head sub- 
quadrate, black and shining, densely and coarsely punctate. Thorax not so long as 
broad, a little narrowed behind, closely and coarsely punctured, with a very fine channel 
along the middle, but without smooth space. Elytra slender, rather longer than the 
thorax, moderately closely punctate, the punctuation being somewhat rough and 
indefinite. The male characters are apparently very slight, but there is a just 
perceptible emargination of the hind margin of the last ventral plate, that is, I have 
little doubt, indicative of this sex, 
5. Neomedon mollis. 
Subdepressus, testaceo-ferrugineus ; capite prothoraceque dense fortiterque punctatis, hoc medio tenuiter 
canaliculato ; elytris crebre subrugulose punctatis. 
Long. 53 millim. 
Hab. Mexico, Mirador ({ége). 
This species is rather broader than WV. mexicanus, though readily distinguished by 
the pallid colour ; the sculpture, too, appears to be a little coarser and closer. I do 
not observe any male characters. 
Four examples. 
