Art. XI. — Description of two new Species of Australian 

 Land Leeches, ivith Notes on their Anatomy. 



By ADA M. LAMBERT, M.Sc. 



(Plates XV., XVI.). 



(Communicated by Professor Baldwin Spencer). 



[Read 13th October, 1898.] 



In a previous paper communicated to thi.s Society, I described 

 the anatomy of Phil(2)non piinoetis, a land leech found, so far as 

 is yet known, in Victoria, New South Wales and Tasmania.^ 



In his memoir on the leeches of Japan, Professor Whitman 

 refers to an Australian land leech sent to him by Professor 

 Haswell, and says : — 



" The Australian species, for which I am indebted to Mr. 

 Haswell, differs from all other species that I have thus far 

 examined in having only two jaws. The latero-ventral jaws are 

 present, but the median dorsal jaw is entirely absent. This 

 remarkable distinction, taken together with the fact that the 

 genital orifices are separated by seven and a half rings instead of 

 five, as in the case of most other land leeches, seems to make 

 necessary the establishment of a new genus, for which I propose 

 the name Geobdella." 



There has been apparently no description published of this 

 species referred to by Whitman. Philcemon pungens differs from 

 the above in that it has four annuli to a segment and the repro- 

 ductive orifices are separated by four rings. Through the 

 kindness of Mr. T. Steel and Mr. C. French, I have recently 

 had the opportunity of examining two other forms of land 

 leeches ; the first of these which came into my hands agreed with 

 Philcemon pungens in the presence of two jaws, but differed from 

 it in possessing five annuli to the segment, and in having seven 

 annuli between the pores. 



1 Proc. Roy. Soc. Vic, N.S., vol. x., 1898, p. 211. 



