496 STAPHYLINIDA. 
3. Somoleptus gracilis. 
Angustus, rufescens, nitidus; capite, elytris abdominisque apice nigricantibus, pedibus testaceis; capite subob- 
longo, cumque thorace crebre subtiliter punctato, medio longitudinaliter levigato. 
Long. 5 millim. 
Hab. Mexico, Cordova (Sallé). 
The unique example indicates a species very similar to S. dicolor, but of much 
narrower form, and smaller, so that I have little doubt it will prove distinct. The 
punctuation of the head beneath is moderately distant and rather coarse. 
4. Somoleptus parvulus. 
Rufescens, nitidus; elytris abdomineque apicem versus fuscis, pedibus testaceis; capite suboblongo, minus. 
elongato, cumque thorace crebre subobsolete punctato, medio longitudinaliter levigato. 
Long. 33-4 millim. 
Hab. GuateMAta, near the city, San Gerénimo (Champion); Panama, Los Remedios, 
Tolé (Champion). 
This is so much smaller than S. bicolor that it cannot fail to be distinguished, and it 
is of less elongate form, with more indistinct punctuation on the head and thorax. 
Found on the banks of streams. 
5. Somoleptus obscurus. 
Nigricans, nitidus; antennis pedibusque rufis; capite gracili, cumque thorace crebrius subtiliter punctato, 
medio longitudinaliter levigato. 
Long. 43 millim. 
Hab. Panama, Pefia Blanca 3000 to 4000 feet (Champion). 
In this species the head is of more slender form, less truncate at the vertex than 
those previously described. The punctuation of the head and thorax, though fine, is 
quite distinct; the elytra are about as long as the thorax, sparingly and excessively 
finely punctate. The colour beneath is of an infuscate red, with the head and breast 
darker ; the punctuation of the head is distant and excessively fine. 
The only example found is in a rather decayed condition. 
6. Somoleptus obsoletus. 
Nigricans, nitidus; antennis pedibusque rufis; capite elongato, oblongo-ovali, cumque thorace crebre obsole- 
tissime punctato, medio longitudinaliter levigato. 
Long. 4 millim. 
Hab. GUATEMALA, near the city, Aceituno (Champion). 
The head is elongate and narrow, not narrowed in front, but the sides rounded 
behind ; the thorax is moderately elongate, and the punctuation of it and the head is 
as obsolete as in S. e@nescens, though not so distant; the elytra are elongate, though 
