( ^'1 ) 



above which F is somewhat iiicrassate, this iiortioii of F corresponding to and 

 somewhat resembling the hook of uiiciimta. The tipper edge of F is distinctly 

 incurved, not straight as in uncinaia. The ninth sternite (is. st.) is very much 

 the same as in C. assimilis. The eighth tergite (viii. t.) bears on each side a 



Vlll.st. 



Text-fig. 4. 



postmedian row of three bristles, and proximally to this row five or si.K additional 

 bristles. 



? . The ? of uncinata is said by Wagner to agree with assimilis, no distinctions 

 between the ? ? of the two species being mentioned. The ? of obtusus, on the 

 other hand, is distinguished from assimilis by the smaller number of bristles on 

 the abdominal segments ii. to vii. The basal sternite bears only a pair of ventral 

 bristles, no lateral bristle, and the numbers on the sternites of segments iii. to vii. 



