74 Natural History Bulletin. 



BiBLOPORUS, Thomson. 



{^F'alisats, Casey.) ^ 



Body slender; antennal club three-jointed; prosternum cari- 

 nate; fourth dorsal not prolonged. 



B. BiCANALis, Casey. Dark brown, pubescence short and 

 fine; antennae and legs paler. Length i.i mm. 



Head small, wider than long, eyes large, coarsely facetted, 

 prominent, very near the base, tempora short, nearly trans- 

 verse; vertex flat, polished, impunctate, with two small, deep, 

 naked foveas, mutually twice as distant as either from the 

 eye; on each side of the vertex is a very shallow sulcus run- 

 ning from the occipital foveas forward, near the frontal margin 

 turning inwards without meeting the opposite sulcus, where it 

 is much more deeply impressed; supra-antennal tubercles flat, 

 crossed by a fine impressed line; frontal margin convex. 

 AntenncB not as long as the head and prothorax together, slen- 

 der; first joint larger, second oblong, conical; third longer 

 than wide, fourth to sixth globular; seventh thicker, globular, 

 eighth as thick as the seventh and shghtly transverse; nmth 

 larger, of the same form; tenth nearly as long as the ninth, 

 transverse, one-half wider than long; eleventh wider than the 

 tenth, little longer than wide, acuminate. Maxillary palpus 

 with the last joint fusiform; under surface of the head wath 

 capitate hairs. Prothorax widest before the middle, sides 

 evenly arcuate, straight toward the neck and the basal angles: 

 the neck is two- thirds as wide as the base; disk pohshed, 

 indistinctly punctulate, with a nude, oblong puncture near the 

 base, continued forward as a fine shallow impression, not 

 reaching the middle of the disk; on each side is a shallow, 

 longitudinal, impression, reaching the basal angle; lateral 

 foveas and transverse basal sulcus wanting. Elytra, across the 

 shoulders, slightly wider than the prothorax, sides arcuate, 

 sutural lines close together, feebly arcuate. Discal fines deep^ 

 one-third as long as the suture; disk indefinitely and closely 

 punctulate. Abdomen shorter and narrower than the elytra. 



