BY T. HARVEY JOHNSTON. 519 



the latter possesses bilateral genital pores, whilst Diesing's has 

 unilateral, they are at least specifically distinct; and accordingly 

 I would suggest the name Tcenia(1) kreffti for this headless 

 specimen. 



Tcenia maslersii Kreift(24), is not a true Taenia. It probably 

 belongs to the Anoplocephalince. 



Cobb(lO) mentioned having found the liver-fluke in wallabies 

 and kangaroos (New South Wales'?). Braun(7) also recorded its 

 occurrence. 



Filaria s'pelcea Leidy(35), was taken from the abdominal cavity 

 of an Australian wallaby, and may be identical with one which 

 I have seen from a similar situation in Macropus ualahatus 

 (N. S.Wales). 



Bancroft(3) recorded the occurrence of Filaria ivebsteri in a 

 kangaroo; whilst Crisp(13) mentioned Filaria sp., from the knee- 

 joint of the same animal, apparently referring to F, wehsteri. 



ILPetrogale penicillata Gray. 



Triplotcenia mirahilis Boas (6) [6,18,20,44], 



Filaria aust^^alis v. Linstow(27), (Australia). 



The former is perhaps the most remarkable adult cestode 

 known, since it consists of an extremely short median strobila, 

 while from each side of the hind part of the scolex there arises a 

 long lateral strobila. Hence the appropriateness of the generic 

 and specific names. Janicki(18,20) and Zschokke(44) refer to this 

 parasite of the above-named rock-wallaby, the former regarding 

 it as a monstrosity arising by the division of an original strobila, 

 Galli-Valerio(in Centr. Bact. f.Parasit. Orig. i. xxxix.l905,p.239), 

 supporting this view. Filaria australis was found in the body- 

 cavity. 



12.Phascolomys sp. 



Tcenia bipapillosa Leidy(25). — This parasite was taken from a 

 wombat in the PhiladelphiaC?) Zoological Gardens. The descrip- 

 tion is very imperfect, giving only a few external characters, 

 which agree very closely with Rudolphi's short account, and 

 Bremser's figures of Mo7iiezia /estiva. The scolices, strobilie, 



