BY J. J. FLETCHER, M.A., B.SC. 973 



Sufficient evidence has now been offered that earthworms are by 

 no means absent from Australia ; and I once more appeal to 

 members of this Society resident in fertile parts of the colony 

 to supply me with information or with specimens. 



I have again to thank my friend Mr. It. T. Baker for his trouble 

 in kindly making a number of drawings for me. 



EXPLANATION OF PLATE XIII. 



List of References. 



a.d. adhesive discs p. prostate 



a.p. aperture of accessory copulatory organs s. sac containing penial set* 



cl. clitellmn $ male pores 



g. d. genital duct $ apertures of oviducts 



Fig. 1. — Prostate, genital duct, and sacs containing the penial setse in 



Digaater armifera. 

 Fig. 2. — Penial seta (enlarged). 

 Fig. 3. — Tip of a penial seta (much magnified). 

 Fig. 4. — Anterior portion of the body of Perichceta tenax seen from below, 



to show the " adhesive discs " &c. (enlarged). 

 Fig. 5. — Anterior portion of the body of P. austrinia seen from below 



(enlarged). 

 Fig. 6. — Anterior portion of P. Queenslandica seen from below (enlarged). 

 In figures 4-6 the natural size of the portion figured is indicated by the 

 lines at the side. 



Note. — The setse are not indicated on the clitellar segments in figs. 4 and 

 5 ; the lines of demarcation between these segments are a little too distinct. 

 In fig. 6 the papillae carrying the male pores on xviii do not show as 

 clearly as they ought to. 



