HERPYLLOBIUS ARCTICUS. 
409 
(5) The root is, therefore, in all probability an absorbing 
organ, nourishment being carried to the external portion of 
the body, which contains the important reproductive organs, 
by means of the lacunar system. 
(6) In one specimen (fig. 5) the body contained numerous 
eggs lying in the diverticula of the two oviducts, each ovi- 
duct terminated in a thick-walled glandular portion. In the 
posterior region of the animal Avas a median vesicle communi- 
cating on each side Avith a lateral one; into the duct between 
the two there opened the glandular oviduct, and from there a 
short duct led to the exterior. 
In this specimen there Avas no trace of a gut. 
(7) The parasite is usually attached to the head of the 
Avorm, and in the tAvo specimens cut the root pierced the 
cerebral ganglion and lay by the side of the oesophagus (figs. 
8 and 9). 
(8) Herpyllobius is one of the seven genera of the family 
Herpyllobiidae. 
Bibliography. 
1. Claus. — • Zeit. fiir wiss. Zool.,' x.vv, 1874, p. 358. 
2. Giard and Bonnier. — ‘Bull. Sclent, de la France et de la Belyique.’ 
XXV, 189C, p 417. 
3. Hansen, H. J. — ‘ Dijmphna Togtets zool. -hot. Udljytte,' 1887, p. 261. 
4. ■ The Choniostoniatida*,' Copenhagen, 1897. 
5. ‘ Danmarks Stilling og Tilstand,’ ii, Kj^benhaum, 19U0, 
p. 11 
6. Jensen.— * Oversigt ov'er det K. Danske Vid. Selskabs For- 
handlinger,' 1900-1, p. 61. 
7. Krbyer. — ‘ Naturh. Tidsskrift, ’ 3rd R. ii, 1863-4, p. 4o3. 
8. ‘ Naturh. Tidsskrift.,’ 3rd R. vi. 1869-70, p. 379. 
9. Levinsen. — ‘ Videnskabelige Aleddelelser fra den naturhistoriske 
Forening i Kj^benhavn,’ 1877-8, p. 363. 
10. Sars, M. — ‘ Nj’t Magazin for Naturvid,’ Christiania , 1870, p. 114. 
11. Schibdte. — ‘ Naturh. Tidsskrift,' 3rd R. vi, 1869-70, p. 385. 
12. Steenstrup and Liitken. — ‘ Bidrag til Kundskab oin det aabne Havs 
Snyltekrebs og Leniaier,’ Kgl. Vidensk. Lebk. Skr. (5) v, 1861, 
p. 426. 
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