BY T. HARVEY JOHNSTON. 55 



sarcoma. I think that Blanchard was correct, as Uver 

 sarcoma appears to be rare in Sydney and as far as I know 

 has not been found there associated with C. fasciolans. 



Hymenolepis dimimita Rud. 



The large luiarmed tapeworm is now recorded from the 

 mouse in Brisbane. I have also identified as belonging to 

 this species a few cestodes collected by Dr. J. B. Cleland 

 irom two rats Epimys ferrcB-regince, captured on an oversea 

 vessel in Sydney. The specimens have a mvich greater 

 breadth than that generally met with but their anatomj^ 

 resembles that of H. diminvta. This constitutes the first 

 record of any entozoon from this rat. I also found the 

 •cestode in a white mouse in Sydney" in 1909. 



Reference has already been made (J. 1909o, p. 219) to 

 the relatively great length to which this cestode may 

 occasionally attain, viz., 45 inches (and one-eighth of an inch 

 broad), the usual length being from 8 to 24 inches. 



Records of infection obtained in Sydney from August 

 1909 to February 1910, revealed the presence of this tape- 

 worm in eleven out of 119 Ep. rattus ; seventeen out of 121 

 Ep. norvegicus : ten out of 100 Ep. alexandrinus \ and one 

 •out of 73 mice, the percentage of infected animals being 

 '9.2, 14, 10 and 1.3 respectively-. The greatest numbers 

 ■counted from one host were 16 and 14 from Ep. norvegicus, 

 the iisual numbers being from one to three. 



Hymenolepis nana Sieb. (H. murina Duj.). 



This small cestode is now reported for the first time 

 irom Brisbane, having been found in Epimys norvegicus, 

 E. rattus {alexandrinus) and Mus musculus. 



During the examination of Sydney rats (August 1909 — 

 Feb. 1910) 1 found it in nine out of 119 Ep. rattus ; seven 

 out of 100 Ep. ale.xandrinus : seventeen out of 121 Ep. 

 norvegicus : and two out of 73 mice, — the percentage 

 infection thus being approximateh- 7.5. 7. 14, and 2.7. 

 The greatest numbers counted from any one host w-ere 40, 

 15 and 10 from E. rattus, 16 and 13 from E. norvegicus, 

 and 11 from Mus musculus. It occurred commonly in 

 company with Hym. diminuta and other entozoa. 



