Manchester Memoirs, Vol. xliii. (1899), No. 3- 83 



are some stout, longitudinal keels. In the middle of the 

 median segment is a stout keel running from the base 

 (where it is rounded) to shortly beyond the middle of the 

 segment, outside this is a similar keel which surrounds its 

 apical two-thirds ; outside this again is another originating 

 at the same place, but proceeding to the end of the segment, 

 where they are joined by a transverse keel ; between the 

 two are a few irregular transverse keels, and, at the apex 

 in the middle, is a longitudinal one ; from the outer side 

 at the base a stout keel runs obliquely to the middle, 

 and having on its inner side near the apex three short, 

 stout keels ; on the side, shortly beyond the middle, is 

 a large, stout tooth ; from its sides run obliquely two 

 keels to the oblique inner keel ; behind, two stout keels 

 run to the apex of the segment ; inside of which are two 

 shorter keels united to the apical transverse terminal keel. 

 The propleurae largely and acutely margined in front and 

 below, projecting at the base into a large, triangular tooth ; 

 at the base is an oblique keel, and, in the middle, three 

 larger, stouter, curved keels, at the apex above are three 

 short keels ; below these are five larger ones, the central 

 being much longer than the others. The prosternum is 

 bordered above by a stout keel. Mesopleurse smooth ; 

 below is a wide depression, extending from near the base 

 to the apex, where it gets narrower and deeper ; at its 

 base are some keels ; the apical depression is crenulated. 

 Metapleurae smooth ; the upper and lower part at the base 

 widely furrowed ; the depression on the top surrounded 

 by a stout keel ; the lower part is more deeply and 

 widely depressed and more stoutly keeled beneath ; at the 

 apex in the middle are four keels which become gradually 

 longer. Legs thickly pilose ; the apical joint of the 

 posterior trochanters rufous. The basal segment of the 

 abdomen black above, broadly white down the sides and 



