220 STAPHYLINID A. 
ninth and tenth scarcely transverse; eleventh rather small, yellow externally, not so 
long as the two preceding together. Thorax without depressions, its sides much 
rounded and quite without posterior angles. Elytra more or less vaguely darker about 
the outer apical angle, not closely and rather finely punctate. Hind body very shining, 
with a slight punctuation at the extreme base of the fourth, fifth, and sixth segments. 
Legs yellow. | | 
Of this species eight individuals are before me, five from Cerro Zunil, three from Las 
Mercedes. They show a little variation in the depth of colour of the thorax; but, on 
_ the other hand, the prominences on the hind body of the male can in some individuals 
scarcely be detected ; so that these processes would seem to be the seat of a variation of 
development similar to what is so well known and remarkable in the family of the 
Lamellicorns, where, however, the variable armature is seated on the anterior parts of 
the body. | 
The insect bears such an extreme resemblance to Platonica fuscicollis that Mr. 
Champion had in one case mounted an individual of each of the two species on one card, 
supposing them to be the same species. 
2. Hoplandria digna. 
Nigro-picea, nitida, antennarum basi sordide rufa, tarsis rufis; prothorace rotundato-transverso, basi in medio 
paululum producta et subtruncata, parce punctato; abdomine elongato, apicem versus acuminato, nitidulo, 
parum punctato. 
Mas elytris ad angulum suturalem tuberculo erecto acuminato, circa tubercula depressiusculis; abdominis 
segmento 2° ad latera utrinque margine laterali posterius dilatato, apice parum producto; segmento 6° in 
medio apicem versus breviter carinato, carina ad apicem fortiter elevata. . 
Long. 53-7 millim. 
Var, abdomine ad apicem late rufo. 
Hab. Panama, Volcan de Chiriqui 2000 to 4000 feet (Champion). 
Antenne rather short and stout, basal joint fuscous red, the two following joints 
clearer red, the terminal joint yellowish at the apex, joints four to ten rather 
strongly transverse. Basal margin of thorax very distinct, and in front of the scutellum 
slightly but visibly produced backwards, and appearing there a little truncate. Hind 
body gradually and regularly narrowed towards the apex, very shining, but not 
altogether impunctate, segments four to six having a small punctuation on the basal 
portion. 
Eight individuals of this species are before me: they show a good deal of variation 
in size; and in the two smaller individuals the apical segments of the hind body are 
red. ‘The male characters show some difference in the amount of their development. 
3. Hoplandria brevicollis. 
Nigra, nitida, antennarum basi tarsisque rufis; prothorace fortiter transverso, fortiterque punctato; abdomine 
apicem versus acuminato, nitidulo, parum punctato. 
Long. 42 millim. 
