158 Proceediiig.s of tlie Royal Society of Victoria. 



Segs. I.-III. have no clearly marked annuli, and bear the 

 first three pairs of eyes. 



Seg. IV. consists of 3 annuli, the most anterior bearing the 

 fourth pair of eyes. 



Seg. V. also consists of 3 annuli, on the first of which is 

 developed the fifth pair of eyes. 



Seg. VI. is represented by 3 annuli, 10, 11, 12, the first 

 bearing segmental organs. 



Seg. VII. and succeeding segments to XXII. consist of 5 

 annuli, the first always bearing well-marked segmental organs. 



Segs. XXIII.-XXXIII. are represented by the 93rd, 94th, 

 95th annuli and the acetabulum. 



Habitat. Woombye, Queensland (C. French, Esq.); New 

 South Wales (Professor Haswell). 



Geobdella australiensis, n. sp. 



Total length in alcohol upwards of 48 mm. The total number 

 of rings is 95, this includes those indistinctly marked at the 

 anterior end but represented. by eyes [Fig. 1.] 



The first complete annulus is the fifth, and helps to form the 

 ventral lip of the anterior sucker ; the last complete annulus is 

 the 92nd. 



Five pairs of eyes— the first three pairs undoubtedly represent 

 the first three segments, consisting of only one annulus each, but 

 these are not distinguishable. The fourth pair is borne on the 

 4th annulus, which is marked ofi" from the 5th but not from the 

 3rd. The .fifth pair is separated from the fourth by two annuli 

 and is carried in the 7th annulus. 



Nephridial pores open on the last annulus of the segment and 

 can be easily detected along the white lateral line in every 5th 

 annulus. The first are in front of the fifth eye, and the last 

 under a papilla close to the acetabulum and formed by the 93rd 

 and 94th annuli. 



The male reproductive opening lies between the 29th and 30th 

 annuli, and female between 36th and 37th. 



Colour markings — alcohol specimens. The anterior portion of 

 the body (about 1-39 annuli), a dull brown, posterior to this 

 bluish-black. Along each side, separating the dorsal from the 



