REPORT ON THE ENTOZOA. 
15 
small apertures, which appear to be the openings of the water vascular system. At a 
distance of 0'6 mm. behind the scolex the segmentation begins. The first proglottides 
are 0'012 mm. long and 0'41 mm. broad, those in the middle are 0‘29 mm. by 1‘64 mm., 
while those furthest back measure 0‘42 mm. in length by 2 ‘5 mm. in breadth. Imme- 
diately behind the scolex calcareous bodies begin to appear. They are found even in that 
part of the former which is in direct connection with the proglottis. The generative 
apertures occur on one side, not however quite marginally, as in the Tsenise, nor yet in 
the median line of the joint surface as in Bothriocephcili, but in the anterior third of the 
proglottis at a distance of 0'066 mm. from the margin. The cylindrical cirrus is protruded 
to a length of 0 - 082 mm., and is CU016 mm. in breadth. In Thalassceca and Daption 
no Helminths have been previously observed, and in the related genera, such as Diomedea 
and Procellaria, no Tetrcibothria. 
Survey of Helminths in Relation to their Hosts. 
Host. 
Name of Helminth. 
Organ of Occurrence. 
Mammal. 
Otaria jubata, . 
Ascaris simplex, 
stomach. 
Bird. 
Trichoglossus swainsoni, . 
Taenia trichoglossi. 
39 
Ptilorhis alberti, 
Taenia clavulus, 
stomach. 
„ 
Paradisea apoda, 
Filaria paradisese. 
93 
Paradisea apoda, 
Filaria flabellata, 
below skin and in abdominal 
cavity. 
>1 
U ami at opus unicolor, 
Taenia increscens. 
33 
Phalacrocorax verrucosus, 
Filaria cirrohamata, 
stomach. 
39 
Plialacrocorax verrucosus, . 
Ascaris spiculigera, . 
stomach. 
33 
Thalassoeca glacialis, 
Tetrabothrium auriculatum, 
stomach. 
>3 
Daption capensis, 
Tetrabothrium auricidatum. 
33 
Diomedea brachyura, 
Ascaris diomedex, . 
stomach. 
3* 
Diomedea brachyura, 
Txnia diomedex, 
stomach. 
Pish. 
Macrurus rudis, 
Ascaris macruri. 
33 
Macrurus sp. (?) 
Unknown, 
Free in deep sea, 
Ascaris macruroidei, 
Ascaris biloba. 
Prothelmins profundissima. 
stomach. 
