224 ON AUSTRALIAN ENTOZOA, 



solium. Total length 5 inches and |th of an inch wide in the 

 broadest part. A single specimen is in the Museum collection 

 which was obtained from the intestines of a White-headed Stilt. 

 (Bimantopus leucocejphalus) , shot at the River Hunter, New South 

 Wales. 



T^lNIA CHLAMYDERiE. 



(Plate II., figs. 1, la, lb, and Ic). 



This is a small species which occurs in the intestines of the 

 Spotted Bower Bird (Ghlamydera maculata) of this colony. It 

 seldom exceeds thx-ee inches in length by a line (one-twelfth of 

 an inch) in width. The head is rounded, flat on the top, and 

 provided with four comparatively large disks or suckers, which in 

 some specimens are separated from each other by grooves. The 

 segments are as usual narrow at the neck, widen out gradually, 

 and show a rather broad marginal line on the upper part with the 

 two lower portions of each joint more or less rugose. Lemnisci 

 could not be discovered. I give a few rough figures on Plate II., 

 No. 1, showing the natural size of the specimen, with an enlarged 

 view of the head. No. la, which is rather distorted, the specimen 

 having been crushed, and of some of the joints No. 1&. 



T^NIA BAIRDII. 



(Plate III., figs. 1 to 16, and figs. 24, 24a, 26, 27, and 27a). 



Looking at the heads of a series of these cestoid worms, it 

 would be quite natural to divide them into at least six species, 

 but as no more than two varieties of ova can be obtained from 

 many supposed species, it is clear that we must look at them as 

 being all identical with one another. 



The total length of a mature colony is from three to seven 

 inches, and the broadest posterior proglottides seldom reach the 

 width of one-eighth of an inch. In very few examples lemnisci 

 have been observed, but whenever this was the case, they were 

 noticed to be of great length, from one-third to one-fourth of the 

 width of a proglottis. Many of the mature joints have burst by 

 accident, and in every case the ova were elongate, tube-like or 



