368 STAPHYLINID. 
shining; a small space on the middle of each segment is all that is brilliant. The male 
has a deep notch at the tip of the last ventral plate. 
Sallé’s collection contained a nice pair of this lovely insect ; the male is figured. 
11. Phanolinus discedens. (Tab. IX. fig. 10.) 
Capite thoraceque aureo-eneis, parum punctatis, hoc seriebus discoidalibus tantum tripunctatis ; elytris lete 
viridibus, fortiter punctatis ; abdomine impunctato, ex parte majore opaco, nigricante, apice flavo ; antennis 
pedibusque testaceis. 
Long. 13 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne rather slender, not thicker externally; the tenth joint about as long as 
broad. Mandibles short, red, like the other parts of the mouth. Head short and broad, 
the eyes occupying nearly all the side, the vertex with some coarse punctures, and three 
or four punctures touching the inner margin of the eye. Thorax subquadrate, the 
discoidal series reduced to two or three punctures on each side near the front margin, a 
puncture on each side near the front angle, and with a very few punctures touching the 
margins; otherwise impunctate. Elytra very shining, with very coarse, remarkably dis- 
tinct punctures. Hind body with the basal portion of each segment dull, the hinder part 
shining, the terminal segment yellow, the preceding one red largely marked with black 
on the middle; anal styles yellow, a little darker towards the extremity. The whole of 
the hind body remarkably free from punctuation, no trace of which can be detected 
on the basal segments, and only a very few indistinct punctures on the apical ones. 
Of this species a single individual, apparently a female, has been found ; it will pro- 
bably form a distinct genus, and appears to have relations with different genera of the 
Xanthopygina. At present it is systematically least misplaced in Phanolinus, from 
which it differs by the shorter and stouter trophi. The facies is rather that of 
Gastrisus and Xanthopygus, in neither of which, however, can it be placed, owing to 
the entire absence of a stigmatic membrane. 
NAUSICOTUS. 
Palporum maxillarum articulus ultimus precedente longior; palpi labiales articulis duobus basalibus brevibus, 
tertio oblongo, leviter incrassato, apice truncato, quam precedentes simul sumtis longiore; mandibule 
elongate. Tarsi anteriores dilatati, subtus spongiosi; prothorax membrana stigmatica instructus. 
This genus appears to be most nearly allied to Phanolinus, from which, however, it 
is distinct by the structure of the labial palpi and the presence of a stigmatic mem- 
brane ; this latter has only a very short extension inwards. As in certain species of 
Phanolinus, there are rudimentary curved impressions on the second and third dorsal 
plates of the hind body. The ligula, though acuminate in front, has the apex rather 
deeply divided. ‘The structure of the labial palpi readily distinguishes the genus from 
Gastrisus, to the species of which genus it is, moreover, very dissimilar in appearance. 
