358 STAPHYLINIDZ. 
Hab. Guatemaia, Zapote (Champion). 
Distinguished from the two preceding species by the colour of the hind body, which 
is red suffused with black, so that the two basal segments are quite black, the others 
becoming more rufescent behind, so that the apex is pale red. 
Two female individuals only have been found. 
10. Philothalpus subtilis. 
Niger, parum nitidus ; pedibus piceis, elytris viridi-cyaneis; prothorace subtiliter sat crebre punctato, medio 
linea longitudinali levigata; abdomine densius subtiliusque punctato. 
Long. 12 millim. 
Hab. Mexico, Cuernavaca (Sallé), Mirador (Hoge). 
This is another very closely allied species, but has the punctuation throughout finer 
than in any cther of the immediate allies of P. prolixus. At the base of the hind body 
three segments are very distinctly transversely impressed, while in the other species 
only two are so. 
I have seen four individuals, in bad preservation. The characters of the sexes are 
the same as in P. prolixus, 
11. Philothalpus chiriquensis. 
Niger, parum nitidus; elytris cyaneis; prothorace crebrius fortiter punctato, medio linea longitudinali levigata ; 
abdomine dense punctato. 
Long. 13 millim. 
Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). . 
So far as I can judge from a single female, the only character of importance by which 
this is distinguished from P. prolixus is the entirely black hind body. 
12. Philothalpus philonthiformis. (Tab. VIII. fig. 25.) 
Niger, parum nitidus; capite, thorace elytrisque nigro-aneis ; prothorace crebre fortiter punctato, medio linea 
longitudinali levigata; abdomine dense punctato. 
Long. 12-13 millim. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
Though very closely allied to P. prolixus, the colour-differences readily distinguish 
this insect; it has, moreover, the thoracic punctuation less dense. There is not the 
least trace of any transverse impression on the fourth segment of the hind body, and 
even that on the (true) third segment is incomplete. 
A pair of this species, showing similar sexual characters to P. prolixus, is all that has 
been found. 
