422 STAPHYLINIDA. 
69. Philonthus centralis. 
Nigricans ; pedibus testaceis, tibiis tarsisque fuscis ; capite subquadrato, elytris abdomineque crebrius subtiliter 
punctatis. 
Long. 63 millim. 
Hab. Mexico, Jalapa (Flohr); GuaTEMaLa, San Gerdnimo (Champion) ; Panama, 
Volcan de Chiriqui (Champion). 
Antenne not elongate, the penultimate joints only about as long as broad. Elytra 
rather closely and finely, hind body still more finely and densely, punctate. The male 
has the head much broader, and the front of it semicircularly emarginate and with 
large clypeal membrane, the anterior tarsi rather strongly dilated, and a distinct notch 
on the last ventral plate; thus it greatly resembles P. cavifrons of Group 5. The 
female is very similar to P. mised/us, but has the punctuation of the hind body denser, 
and the terminal joint of the labial palpi less slender. The hind tarsi are short, with 
stout basal joint, which is about equal in length to the terminal joint. 
70. Philonthus armatipes. 
Subdepressus, fusco-niger; capite thoraceque nigro-subeneis, elytris sordide eneis; antennis sat elongatis ; 
capite lato, subquadrato ; prothorace serie discoidali vel 6- vel 7-punctato ; elytris abdomineque crebre 
subtiliter punctatis ; tibiis tarsisque posterioribus setis longissimis armatis. 
Long. 73 millim. 
Hab. GUATEMALA, near the city at an elevation of 5000 feet (Champion). 
Antenne rather slender, with all the joints longer than broad. Head broad, very 
shining, with numerous scattered coarse punctures, which are absent from a broad space 
along the middle in front. ‘Thorax elongate, evidently narrowed behind; the discoidal 
series consists on each side of either five or six punctures, and an additional more remote 
one very close to the anterior margin. Scutellum very finely punctate. Elytra not 
longer than the thorax, not shining, rather closely but not coarsely punctate. Hind 
body finely and not closely punctate. Hind tibie armed externally about the middle 
with two rather long slender spinules, and also with some very fine long sete ; the upper 
of these, placed near the knee, are so elongate as to be nearly as long as the tibia; the 
basal joint of the corresponding tarsus also bears an extremely long seta. 
Of this remarkable species I have four examples before me, three of which are 
apparently males, though they present no external marks of distinction from the fourth 
individual, which I believe to be a female. 
71. Philonthus serpens. (Tab. X. fig. 21.) 
Subdepressus, niger; pedibus fuscis ; antennis sat elongatis; capite lato, subquadrato; elytris abdomineque 
crebre subtiliter punctatis; tibiis posterioribus externe setis tenuissimis elongatis armatis. 
Long. 6 millim. 
Hab. Guaremata, San Gerénimo, Torola (Champion); Panama, Volcan de Chiriqui 
4000 to 6000 feet, Pefia Blanca 3000 to 4000 feet (Champion). 
