258 MEMOIRS ON THE COLEOPTERA 



The position of the following species is problematical, but for the 

 present it may be attached to Stenocelhts, although differing rad- 

 ically in the form of the prothorax: 



Bradycellus subcordatus Chd. Similar to rupestris but with dif- 

 ferent form of prothorax; eyes more prominent; prothorax slightly broader, 

 the anterior angles not at all rounded at their tips; sides distinctly sinuate 

 in posterior half and falling upon the base in a right angle; base very 

 feebly bisinuate, more transverse near the angles; surface more distinctly 

 punctured, especially in the lateral depressions; elytra slightly broader, 

 very parallel, flatter, without trace of scutellar stria; color probably 

 brown when mature. Length (9 ) 4.75 mm. 



The locality is not stated, but as the type was sent by Mot- 

 schulsky, it is possibly a native of California; it is said by Chaudoir 

 to be best placed near tantillus, but this cannot be accurate, as the 

 size is very much greater. The peculiar conformation of the 

 prothorax and size of the body, precludes association with any 

 Stenocellus known to me at present. 



Amerinus Csy. 



The elongate parallel form of the body in this genus strongly 

 recalls Stenocellus, but in the details of structure the two genera 

 are only remotely connected. In Amerinus the emargination of 

 the mentum is unusually small and shallow, the long sharply pointed 

 tooth projecting even rather further than the angulate lobes; the 

 middle of the base of the mentum is deeply impressed, the impression 

 binary. The ligula is very slender and parallel to the tip and the 

 paraglossse do not extend quite to its apex, their outer angles 

 divergently prolonged, these processes becoming very fine and 

 curved. The labial palpi are quite different from those of Steno- 

 cellus, being slender, with the second joint slender, parallel and as 

 long as the third. The second joint of the maxillary palpi is notably 

 thickened, compressed and slightly arcuate. The inner lobe of 

 the maxilla is extremely hooked at apex, the point prolonged far 

 beyond the long coarse setae forming the fringe; the last joint of 

 the outer lobe is also very long, gradually drawn out apically into 

 a long slender subulate point. The mandibles are long, prognathous, 

 rather slender and feebly arcuate and the right at least, and possibly 

 also the left, has a small acute tooth projecting from the inner 

 side near the middle of the length. The eyes are rather small and 



