316 Mr. Frederick Bates on 



teeth along their inner side ; first joint of the posterior 

 tarsi much shorter, relatively, than in Goniadera. The 

 abdomen is wanting" in the only example I possess of 

 this insect; but, judging from the notch in the posterior 

 margin of the metasternum, the intercoxal process would 

 be short, broad, and rounded in front, as in Goniadera. 



This insect must be somewhat related to the species 

 from Java mentioned by M. Lacordaire in his " Genera," 

 vol. V. p. 392 note, which that author says is a true 

 Goniadera ; our insect, however, is abundantly distinct 

 from that genus in its differently formed head, antennee, 

 and prothorax ; in its much flatter elytra, with the epi' 

 pleural fold sub-horizontal ; and in its peculiarly con- 

 structed legs. In the form of its maxillary palpi ^dia- 

 torix very nearly approaches the genus Phymatodes. 



JEdiatorix Jansoni, n. sp. (PI. XV. fig. 4). 



Length 8^ lines : — elongate, depressed ; upper surface, 

 antennae, and legs uniformly dark-brown ; opaque ; 

 more or less coated with, apparently, a gummy sub- 

 stance, probably derived from its living in decomposed 

 woody matter ; underside, as much of it as is left exposed, 

 deep black, glossy : epistoma pitchy-red, closely and 

 coarsely punctured : head and prothorax strongly, coarse- 

 ly, and somewhat reticulately corrugate ; on the latter, the 

 elevated portions are, here and there, highly polished ; 

 scutellum elongate, sinuous at the sides, pointed behind, 

 and with a few large coarse punctures on the disc, the 

 margins being smooth and polished ; on each elytron 

 are four very fine, sharp, smooth costa3 or ridges ; the 

 first and fourth uniting near the apex of the elytra, the 

 second abbreviated behind, the fourth abbreviated in 

 front, the third mounting to, and turning, the shoulders, 

 and nearly joining the first and fourth at their junction, 

 near the hind extremity of the elytra; there is also 

 another ridge, short and oblique, at each side of the 

 scutellum ; the intervals are broad, flat, or slightly 

 concave ; finely shagreened with minute granules, and 

 studded with small punctures, somewhat irregularly 

 arranged in three rows on each interval ; suture elevated, 

 smooth ; epipleural fold, parapleurte, and sides of sterna 

 minutely granulose, and with a few scattered punctures, 

 the first-mentioned being punctured only at the base, 

 and by a single row down by the outer margin ; legs 



