[ 241 ] 



C^6ticercooib6 paraeitic in C^prie cinerea. 



By T. B. Rosseter, F.R.M.S., Canterbury. 

 Plates XVL, XVII. 



THE present century has been productive of many able 

 workers in the field of Helminthology, both English and 

 Continental, but our countryman, Dr. Cobbold, and Leuckart of 

 Germany, stand out as shining lights, a statement sufficiently 

 warranted by a glance at Spencer Cobbold's numerous works on 

 human and animal parasites, of the " Parasites that exist in Man 

 and Animals." Yet, if we turn our attention to one division, viz., 

 " The Cystoidea," we shall see that but few of this particular class 

 of parasites have been studied ; for Leuckart says, as yet but few 

 forms are known, not more than a dozen. Leuckart enumerates 

 the following : — 

 Cysticercus Tenetrionis becomes Taenia Musavagina 



„ Arionis „ Taenia (probably) of the Red 



Shark 

 ,, from, Lymnaeus pereger becomes T. microsoma 

 „ (?) not known ,, T. gracilis (Perch) 



,, lumbriculi ,, T. crassivostis (?) 



„ glomeridis ,, T. pistillium (Shrew) * 



„ gyporhynchus „ T. macropeos 



,, elliptica ,, T. cucumerina (dog) 



,, (?) not known „ T. torulosa (?) Cyclops 



Echinococcus, from body cavity of Earthw^orm. 

 Cysticercus (?) not known, becomes Tsenia nana f 



(?) „ „ T. flavo punctata f 



(?) „ T. Madagas-cariensis f 



The above is an illustration of the paucity of our knowledge of 

 these minute, yet somewhat important creatures. This is explained 

 not by the want of interest on the part of helminthologists in 

 general, but by the difficulties that beset the path of the investi- 

 gator. First, in consequence of their habitat being of an uncertain 



* I have found T. pistillium in company with T. tiara in intestine of the 

 Mole (Talpa Europaea). 



t These three are Human tape-worms. 



Journal of Microscopy and Natural Science. 



New Series. Vol. III. s 



» 



