464 



Mr. H. A. Baylis oti new 



behind the female glands. The cirrus-sac measures about 

 0*]. mm. X 0'038 mm., and curves from the genital pore 

 towards the front o£ the segment. The ovary is divided into 

 two more or less distinct portions, the vagina passing between 

 them. The yolk-gland is posterior in position and is rather 

 deeply lobate. 



7. Davainea vaganda, sp. n. 



Host : Ilaliaetus vocifer. (Sea-Eagle.) 



This is a very slender little form, with a comparatively 

 large scolex. In general it approaches closely to D. spJucr- 

 oides, Clerc, 1903 *, wliicli is also j)arasitic in birds of prey, 

 but it does not appear to be identical with that species. 



Davainea vaganda ; the scolex, highly magnified. 



The present examples measure 2-3 cm. in length and have 

 a maximum width (near the posterior end) of 0*55 mm. 

 The scolex (fig. 5) measures 0'3-0'35 mm. across, and the 

 diameter of the suckers varies from 0'11-0"15 mm. The 

 latter are sometimes elongated in a transverse direction. The 

 rostellum measures 0*22 mm. in diameter and is armed with 

 numerous hooks 25 /* in length, arranged in two rows. The 

 hooks on the suckers, which are also very numerous, measure 

 15 yu. in length. 



* Rev. Suisse Zool. xi. p. 369. 



