78 "pr. A. GUNTHER ON THE ZOOLOGICAL - [ Feb. 6, 
PaALPICORNIA. 
TROPISTERNUS LATERALIS, Fab. 
This species has already been recorded from the Galapagos, and 
appears to be common there. 
Hab. Charles Island (Darwin and Cookson). 
NECROPHAGA. 
ACRIBIS, gen. nov. 
Head large, broad, convex above; epistoma slightly produced, . 
narrow; antennze about as long as the head, Ist joint rather 
elongate, 2nd short obconic, 3rd as long as the 2nd and more slen- 
der, 4th to 7th becoming gradually shorter, 8th nearly globular, the 
9th, 10th, and 11th forming a large ovate compressed club. Inter- 
mediate legs retractile; posterior femora partially covered by the 
posterior margin of the metasternum. Basal segment of the abdo- 
men large, the 2nd and 3rd very short. 
Closely allied tv Clambus, which it resembles in general form. 
ACRIBIS SERRATIVENTRIS, Sp. 0. 
Subglobosus, niger, nitidus, discrete subtilissime punctulatus ; 
capite subtus antennisque piceo-testaceis ; elytris apice obtuse 
rotundatis ; abdomine piceo, segmentis marginibus minute ser- 
ratis. Long. § millim. 
Build of Clambus minutus, but smaller and not so much narrowed 
posteriorly. Shining black. Head large, very broad and very con- 
vex, angular at the sides, emarginate on each side of the base of the 
epistoma at the insertion of the antenne. Thorax ample, the 
whole surface marked with fine transverse scratches, and sparingly 
and very finely punctured (as are also the head and elytra), each 
puncture bears a short fine black hair; the posterior angles are 
broadly rounded. Scutellum triangular, short, and very broad. 
Elytra convex, but less so posteriorly, a little longer than broad, 
not much narrowed towards the apex, which is broadly rounded. 
Underside. — Head beneath pitchy testaceous. Thorax below 
deeply excavated for the reception of the head in repose. Inter- 
mediate legs, when retracted, completely hidden by the posterior 
portion of the mesosternum. Metasternum a little shorter than the 
basal segment of the abdomen, with its posterior margin slightly 
flexuous in the middle. Posterior femora rather large, well separated 
from each other at their bases; tibiee about } the length of the 
femora: posterior tarsi as long as the tibiee, rather stout. Abdomen 
pitchy, the margins paler, the margins of the Ist to 4th segments 
serrate or, rather, minutely toothed like a comb; the basal seg- 
ment, as well as the sterna, are distinctly and moderately thickly 
pencilled. 
Hab. Charles Island (C. Darwin). 
PHALACRUS DARWINII, sp. 0. 
Oblongo-ovalis, convexus, piceo-niger, nitidissimus ; antennis pe- 
