Mr. G. Lewis on the Pyrochroidge of Japan. 169 



Pyrochroa vestiflua. 



Elongat.a, nigra, subnitida ; fronte modice excavafca, anfcice tubercu- 

 lata ; elytris rufo-brunneis, postice dilatatis. L. 10-17 mill. 



Elongate, black, somewhat shining ; head transversely ex- 

 cavated in front of the eyes, and between the antennse there is 

 a small tubercle on a short longitudinal ridge. The first joint 

 of the antennse is rather long and constricted before the base, 

 the base being abruptly enlarged ; the second joint is about 

 one third the length of the first and slightly smaller before 

 its base ; the third joint is as long as the first and at its 

 apex is the first pectinal tooth or branch, which in the male 

 is as long as the joint itself; the next seven joints have 

 subapical processes which are nearly three times the length 

 of each joint; the terminal joint is (as in other species) long 

 and simple ; in the female the branch of the third joint is 

 short and rather obtuse, the following joints bearing branches 

 which gradually lengthen until the tenth joint, when the 

 prolongation is half as long again as the segment. The 

 thorax is clothed with a cinereous pile and anteriorly rounded 

 at the sides, with a median depression which widens out before 

 the scutellum ; there are also two irregular depressions on 

 each side. Scutellum somewhat rounded behind, black, and 

 rugosely punctured. Elytra reddish brown, with concolo- 

 rous pile, closely and rather transversely rugose and for three 

 fourths of their length rather amply dilated. Legs intensely 

 black with pale claws. The female has the forehead much 

 less excavated than the male and the tubercle is less defined. 



The larvEe, pupse, and images were found together under 

 bark of beech, April 21, 1880, at Suyama, and the perfect 

 insect afterwards was found commonly at Miyanoshita, 

 Nikko, Sapporo, Oyayama, and other places. 



Pyrochroa laticollis. 



Elongata, nigra, subnitida ; capite puncticulato, fronte utrinque 

 exeavata ; tborace transverse post oculos subrecto, L. 10-11 

 mill. 



This is very similar to the last in colour and form of the 

 antennge, but it is much smaller and has a transverse thorax. 

 The head is finely and rather thickly punctured, and the trans- 

 verse region between the antennae and the eyes is excavated 

 on each side, with a dividing central portion much less deep. 

 The thorax is rather straight behind the head, with a very 

 distinct angle on the outer edge behind the middle ; the de- 

 pressions are much as in P. vestiflua, 



Ann. & Mag. N. Hist. Ser. 5, Vol. xx. 12 



