ANATOMY OF MONOPYLIDIUM PASSERINUM, FUHR. 405 



The main constituent of the oil is oleic acid, which 

 probably occurs as olein, as glycerol was also separated. 

 The oil contains besides the above small quantities of solid 

 acids one of which melts at 68° C. and is probably stearic. 

 Amongst the unsaponiflable constituents of the oil is a 

 phytosterol and a wax-like substance melting, though not 

 sharply, at 45° 0. 



On the ANATOMY of MONOPYLIDIUM PASSERINUM 



FUHRMANN. 



By T. Harvey Johnston, m.a., b.sc, Assistant Government 



Microbiologist. 



(From the Bureau of Microbiology, Sydney, N.S.W.) 



[With Plate XVIIL] 



[Read before the. Royal Society of N. S. Wales, December 1, 1909.'] 



During the early part of the present year (1909), I collected 

 a number of small tapeworms from the intestine of the 

 common sparrow, Passer domesticus, L., and fixed them 

 in hot corrosive-acetic solution. On examining them, they 

 were seen to possess nearly all the characters which Dr. O. 

 Fuhrmann 1 described as being present in his Monopylidium 

 passerinum, a parasite of the sparrow and of Fringilla 

 ruficeps. Since the original description is brief and some 

 of the structures are not mentioned, I have thought it 

 advisable to figure and describe the worm more fully, 

 especially as there are several points of difference between 

 the two accounts. These, however, may perhaps be 

 explainable by differences in the state of preservation in 

 each case. 



1 Fuhrmann, Centrb. f . Bact., Orig., I, xlv, 1908, p. 528. 



