428 Wn.HELM MICHAELSEN. 



ninth segment (in four specimens) . In one specimen there 

 was found a supernumerary papilla on one side of the twenty- 

 third segment besides two normal pairs on the tenth and 

 twenty-ninth segments. Another specimen possessed a super- 

 numerary pair of papillae on the eleventh segment besides the 

 normal ones. Often there are to be seen a great number of 

 very much smaller papilla? carrying all the ventral pairs of 

 setffi of the clitellum region extending from the eleventh to 

 the twenty-ninth seginent. These, together with the lai-ge 

 papilla?, form two continuous longitudinal series in the lines 

 of the ventral pairs of setfe. Generally these smaller papillag 

 are indistinct or quite inconspicuous. 



Male pores were not seen; probably they occur at the same 

 points as in var. cfementerii, i.e. at the furrow between 

 the seventeenth and eighteenth segments, beneath the lines of 

 set* c. 



Female pores are just in front of sette h of the fourteenth 

 segment. 



Spermathecal pores are in groups of two to twelve in the 

 lateral parts of the furrows between the twelfth and 

 thirteenth segments and thirteenth and fourteenth segments, 

 or between segments 12 and 13, 13 and 14, and 14-15. 



Internal Anatomy. — It has been described by Benham. 

 The following additional statements may be made. The 

 sexual setge are about 1"75 mm. in length and 75 ju in 

 thickness in the middle. They are slightly sigmoid. The 

 thickness diminishes towards the distal end, being only about 

 20 fx just beneath the distal tip. The tip is not simple and 

 conical, but is sharpened to form a triangular pyramid, the 

 lateral sides of which are deeply excavated. The distal third 

 of the seta, with the exception of the extreme end, is 

 ornamented. This ornamentation in the proximal parts 

 consists of transverse or more or less oblique annulations, the 

 scaly margins of which are irregularly toothed or pronged. 

 Towards the distal end the annulations become interrupted, 

 and ultimately pass into more or less irregular transverse 

 lines which finally disappear. 



