Classification of lite Coleopterous family Endomiifchidae. 77 



Mr. G. E. Bryant. AlthoujL!;h very ditiereiit in appearance 

 from the genus Trochoideus it agrees with it in all the main 

 details of its structure. The peculiar modification of the 

 mouth-appendages is the same, as is also the conforma- 

 tion of the legs and lower surface. The most important 

 difference is in the two-jointed club of the antemia, which is 

 not consohdated but freely jointed, with the terminal joint 

 only a little longer than the other. The whole surface is 

 very smooth and shining and entirely devoid of hair 

 above. The pronotum is about as long as it is wide at the 

 base and deeply sulcate along the middle, with two fine 

 parallel striae in the groove. The sides are nearly parallel 

 in front, strongly retracted behind, the lateral margins 

 depressed and a little thickened at the edges, and all the 

 angles are produced into blunt lobes. The basal margin is 

 also flattened and the basal foveae are close to the hind 

 angles. The elytra are very narrow and taper from base 

 to apex, Avith an entire lateral carina, giving rise at the 

 shoulder to a short humeral carina. There is also a still 

 shorter dorsal carina arising just behind the scutellum and 

 a strongly impressed stria close to the suture. All the 

 legs are long and slender, the hind tibia a Uttle produced 

 internally at the extremity. 



The two specimens are probably males. 



The common Trochoideus desjardinsi Guer., has been 

 recently redescribed under the name Pseudopanssus mon- 

 strosiis (Schulze, Phil. Journ. Sci. xi, 1916, p. 292). 



Genus Exysma. 



This genus is closely related to the European Clemmus, 

 from which it differs chiefly in having only ten joints to 

 the antenna. Two Japanese insects referred by Gorham 

 to Symbiotes {nijjonensis and orbicularis) are entirely mis- 

 placed and are much more naturally placed in Exysma, as 

 Gorham himself suggested. This entails renaming the 

 Central American Exystna orbicvlaris Gorh., which may 

 be called 



E. spherica, nom. nov. 



Idiophyes brevis Blackb., is another species of the same 

 genus very similar to E. niponensis Gorh., but rather less 

 strongly punctured, and with the elytra a little more 

 produced behind. 



