474. STAPHYLINIDA. 
broader and their inner margin is indefinite, and there are a few indefinite punctures near 
their termination; on the under surface the lateral grooves are deep and moderately 
broad, and are very finely sculptured; but there is no other punctuation. | 
Three examples. 
5. Homalolinus apicalis. (Tab. XII. fig. 18.) 
Elongatus, angustus, depressus, nitidissimus, brunneo-testaceus, capite abdomineque ante apicem nigris ; capite 
suboblongo, anterius parum angustato, medio canaliculato, utrinque minus argute et profunde sulcato. 
Long. 20 millim. 
Hab. Mexico, Juquila (Sal/é). 
This species differs from H. dilutus in that the penultimate and terminal segments are 
black, the hind margin of the latter, as well as the armature segment, being, however, 
pale; it is in proportion to its length the narrowest of the genus, and the head is very 
little narrowed in front, its vertex rounded ; the lateral channels on the head are rather 
broad and indefinite, there is no punctuation behind them, but there are a few 
punctures outside them, connecting with the lateral punctuation. 
Only two examples are before me. 
6. Homalolinus sanguineus. 
Elongatus, angustus, depressus, nitidissimus, rufus; capite abdomineque nigris, hoc apice rufo, antennis piceis ; 
capite subquadrato, anterius sat angustato, medio canaliculato, utrinque sulcato. 
Long. 15 millim. 
Hab. GUATEMALA, near the city (Salvin), Calderas, Duefias, Capetillo, San Gerénimo 
3000 feet, Cerro Zunil 4000 to 5000 feet (Champion). 
This species is very similar to H. divisus, but has a bright red thorax, and the head is 
rather broader and shorter. From the various localities where it has been found I have 
in all eight examples before me, showing a little variation in size, and in the form of 
the head. 
7. Homalolinus divisus. 
Xantholinus divisus, Er. Gen. et Spec. p. 308’. 
Hab. Mexico, Vera Cruz (coll. Chevrolat)}, Cordova (Sallé), Jalapa, Cerro de Plumas, 
Oaxaca (Hége). 
Var. guatemalenus. Minor et angustior, capite magis oblongo, vertice minus truncato, sulcis lateralibus angus- 
tioribus magis argutis. 
Hab. Guatemaa, San Gerénimo, Balheu (Champion). 
I have been able to examine a good series of Mexican examples, and though individuals 
vary a good deal in size, in other respects there is but slight difference ; one example from 
Oaxaca has the two terminal segments entirely red, while in all the others the base of 
