BY J. J. FLETCHER. • 1007 



Not distinguishable from the foregoing. There are exactly- 

 similar swellings on x and xi, and at least indications of pairs of 

 papillae on xvii and xix in some of the specimens. 



Hob. — Coonabarabran, Gunnedah from the banks of the Namoi, 

 N.S.W. (collected by Mr. T. G. Sloane). 



P. FECUNDA, EL, [I.e. (2), II. (1887), p. 401], var. nov. 



Twenty specimens 38-62 mm. long, 2-3 mm. broad ; number of 

 segments about 90-115. 



Colour dark purplish iridescent superiorly and anteriorly as in 

 the typical forms, lighter posteriorly, and quite pale on the ventral 

 surface. 



Setoe : On the preclitellar segments 24 (frequently only 20 or 

 fewer with evident gaps in the half-circles, especially on the first 

 setigerous segment (li), but as examples can be found in which 

 there are 12 on one or both sides of this segment the difference is 

 evidently accidental) ; on some of the clitellar segments or just 

 behind them the number usually increases to 28, but here and 

 there only fewer can be counted ; still further back the setse are 

 finer, closer together and more numerous, from about 30-40 when 

 the half circles are complete. 



Accessory copulatory structures : the ventral surface of segments 

 X and XI outwards on each side to about the third or fourth seta 

 swollen, with a pair of fossettes in front of and about opposite the 

 second seta or the interval between the second and third setse on 

 each side (in immature specimens the general surface is less 

 swollen, but the rudimentary circular shallow depressions or 

 fossettes are in most cases recognisable). On xvi a circular 

 raised area nearly filling the ventral interval devoid of setae on 

 this segment ; a larger but elliptical area similarly placed on xvii 

 (these two less evident when the girdle is developed) ; the ventral 

 surface of xix as far outwards on each side as the third seta 

 raised, like a pair of papillae or pores in front and opposite the 

 interval between the first and second setae; xx somewhat similarly 

 modified but not dorsad of the first seta, or the surface simply 

 raised with a pair of fossettes, one on either side of median line. 



