418 



Mr. H. A. Baylis on a remarkable 



On the whole, the general form may be described as an elon- 

 gate pear-shape, the narrower end being that at which the 

 invagination takes place for the formation of the scolex. 

 Frequently the " bladder " is somewhat flattened and pushed 

 in on one side, so that the animal is then convex on one 

 surface and concave on tlie otiier. The " anterior ^^ end, or 

 that at which invagination takes place, is often suddenly 

 narrowed, forming a rather proboscis-like projection. Tlie 



Fi-. 1. 



" Cysticercus TcenitB Gritnaldii." View of tlie animal cut tlirougli trans- 

 versely at about the middle. Much magnified. 



N., coils of the "neck " cut across in various directions; P., pareuchvme 

 of the " bladder." 



wall of the bladder is firm in consistency, but cuts very 

 easily. On opening a specimen, the wall is found to be very 

 thick on two sides and comparatively tliin on the other two 

 (fig. 1, P.). The appearance of a small specimen on being 

 thus opened is much like that of the well-known forms of 

 Cr/sticercuSf such as C. pisiformis, except as regards the 



