natural, history

SUBFAMILY ZYGOPINAEPycDorbinus gen. nov.Head projecting well beyond the pronotum, with the eyes large, round and distinctlyseparated. Rostrum unusually short and thick, the scrobes turning downwards far infront of the eyes. straight and rather narrow. Antennae inserted at the middle of therostrum. the scape very short, slightly curved, clavate: the funicle 7-jointed, joint Ibeing longer and much thicker than 2. Prothorax subconical, its lateral line exactlycontinuous with that of the elytra, the base very shallowly bisinuate. Scutellum distinct,transverse. bare. E~l'tra narrowly ovate, widest at the shoulders, without striae,but with rows of microscopic punctures. Legs with the femora not clavate, sulcatebeneath, without a tooth or an external carina. the hind pair not reaching the apexof the elytra; the tibiae gradually widening from base to apex, with a narrow obliqueuncus. the mucro obsolete: the tarsi with joint I as long as 2 + 3. 3 deeply bilobate,4 short. with the claws very small and simple. Sternum with the front coxae verywidely separated for the reception of the rostrum but without any defined sulcus; themesosternal process very broad. almost vertical. the mesepimera rising: the metepisternacomparatively broad and parallel-sided. separating the hind coxae from theelytra: the metasternum between the coxae more than twice as long as a middle coxa.Venter with the intercoxal process very broadly truncate; ventrite 2 in the middleabout as long as 3 ~ 4: the pygidium exposed and rather strongly punctate.Genotype: Pycnorhinus politus n. sp.Having quite the general shape of Brephiope Pasco (1874) which differs in itsmuch longer and slender rostrum, which has a receptacle on the mesosternum: thepygidium is concealed, and the femora have a small tooth.Pycnorhinus politus n. sp.(PI. 15, Figs. 4, 5)j. Body narrowly elliptical, widest at the shoulders of the elytra, the apices of whichare as broadly rounded as the head; very shiny black to red-brown (perhaps teneral),entirely bare above. the underside with sparse short recumbent pale setae on themetasternum and first ventrite.Head smooth, with sparse shallow punctures. the space between the eyes ratherwider than the apex of the scape, the distance between the eyes and the pro thoraxrather more than half the width of an eye. Rostrum short and very stout. wideningrapidly from base to apex; the dorsum tectiform, shiny, with sparse small punctures.Prothorax a little shorter than its basal width (4: 5), subconical, with the sides almoststraight, the arcuate apical margin about three-fifths the width of the very shallowlybisinuate base; the dorsum gently convex longitudinally. highest behind the middle,with sparse minute punctures. Scutellum semicircular, bare, impunctate. E~vtranarrowly ovate, widest behind the shoulders and rapidly narrowing to the jointlyrounded apex, the basal margin jointly and shallowly sinuate, the humeral slopeexactly continuous with the lateral line of the prothorax; smooth and shiny through-•124