616 STAPHYLINIDA. 
Hab. Guatemaua, Paso Antonio 400 feet (Champion). 
This insect is smaller and more slender than the smallest examples of P. yucateca, 
and has the front legs entirely yellow, the tips of the middle femora just perceptibly, 
those of the hind femora distinctly, infuscate ; the tibie all clear yellow. The head is 
broad and short, finely punctate; the thorax is a little longer than broad, not much 
narrowed behind, shorter than in P. yucateca ; the elytra are distinctly longer than the 
thorax, rather more closely and less coarsely punctured than in P. yucateca. 
The cedeagus is similar to that of the species last mentioned. Unique. 
18. Peederus cordovensis. 
Alatus, niger; elytris cyaneis, mandibulis, prothorace, mesosterno abdominisque segmentis quatuor basalibus 
rufis ; antennis, palpis pedibusque testaceis, illis articulis 4°-8™, his ex parte majore, nigricantibus ; capite 
latiusculo ; elytris amplis, quam prothorax longioribus. 
Long. 10-12 millim. 
Hab. Mrxico, Cordova (Hoge). 
This species differs from P. yucateca by the elytra being more ample and rather more 
closely and finely punctured ; by the legs being dark over a greater extent, the tibiee and 
tarsi being nearly black or fuscescent, as well as the apices of the femora. We have 
received only two pairs of the species. The cedeagus is similar to that of P. yucateca, 
but with well-marked distinctions, the most striking of which is that, owing to the 
greater elongation of its lateral lobes, the slender median style is scarcely longer than 
they are. The female has the terminal ventral segment with a slender spiniform 
recurved tooth in the middle, the lateral angles being quite obtuse. I do not 
observe any marked difference in the size of the head between the two sexes. 
P. cordovensis is excessively like the Amazonian P. sordidus, but the cedeagus is 
quite different in the two. P. femoralis, Lec., is also allied to P. cordovensis, but 
has shorter elytra. 
19. Peederus costaricensis. 
Alatus, rufus; elytris viridescentibus, quam prothorax paullo longioribus, fortiter punctatis, pectore nigricante,. 
femoribus apice dilute fuscis. 
Long. 11 millim. 
Hab. Costa Rica, Cache, Volcan de Irazu 6000 to 7000 feet (Rogers). 
Var. Capite nigricante, tibiis posterioribus ad baseos fuscescentibus. 
Hab. Nicaracua, Chontales (Janson); Costa Rica, Volcan de Irazu 6000 to 7000 
feet (Rogers). 
Very closely allied to some of the varieties of P. yucateca, but distinguished by the 
pale antenne and legs, and the absence of black colour on the hind body. We have 
received only two examples of the typical form, and two of the variety, and I feel by 
