270 Mr. C. J. Galian on neio Longicorn Coleoptera 



fossil under the microscope from the surface of a section it 

 should, when not overlaid permanently by Canada balsam 

 and a glass cover, be overlaid for the occasion by a little water 

 and a glass cover ; otherwise the roughness of the dry surface 

 alone, however much it may be polished, will render the 

 examination most imperfect and unsatisfactory. 



XXXIII. — On Longicorn Coleoj^tera of the Family Lamiidre. 

 By Charles J. Gahan, M.A., Assistant in the Zoological 

 Department of the British Museum. 



[Plate XVI. figs, 1-5.] 



^THALODES, n, g. 



Head of moderate size and strongly concave between its an- 

 tennal tubercles ; the latter rather short and somewhat distant ; 

 front convex, subequilateral. Last joint of palpi ovate-cylin- 

 drical. Antennaj scarcely longer than half the body ; scape 

 stout, subcylindrical, slightly curved, somewhat expanded at 

 the apex, the latter with a small but distinct cicatrice ; fourth 

 joint equal in length to the second and third united, distinctly 

 shorter than the scape. 



Prothorax acutely spined at the sides and with large 

 rounded tubercles on the disk. 



Elytra oblong, rough, with alternating rows of larger and 

 smaller granules, rounded at the apex, and each elytron 

 having at its base a small median projection. 



Legs subequal, the posterior a little longer than the ante- 

 rior or middle ; femora linear ; middle tibi^ emarginate. 



Pro- and mesosterna simple. Metasternum moderately 

 elongate. 



This genus is allied to Trachystola, of which it has the 

 general form, but from which it may be readily distinguished 

 by the short third joint of its antennaj, by the peculiar tuber- 

 culation of its thorax, and the less prominent median projec- 

 tion at the base of each elytron. 



^Fthalodes verrucosus, n. sp. (PI. XVI. fig. 1.) 



Niger, squamositate fusca indutus ; antcnnis concoloribus ; pro- 

 thoraee latcribus acuto spinoso, dorso quinque tuberculin ; elytris 

 seriato-gi'anulatis, apicibus I'otundatis. 



Long. 23-28 mm., lat, 10-11 mm. 



Hah. North China. 



