PLATE XIV. 
In all the Plates the following letters have the same signification. 
c. Marginal cirrus. 
cl. Cloacal papilla or opening. 
i. Intestine. 
m. Mouth. 
ma. Manubrium of the supporting stalk of the hook-apparatus. 
ov. Ovarium. 
p. Parapodium. 
pli. Pharynx. 
s. Sucker. 
t. Testicle. 
u. Hook of the hook-apparatus. 
<5 Male genital papilla or opening. 
Note . — The coloured drawings show the object seven times magnified; the uncoloured drawings are drawn with the 
Oberhauser camera and objective 0 (Seibert and Krafft), which magnifies 40 diameters, the hook-apparatus with camera and 
objective IV., which magnifies 220 diameters, if the contrary be not expressly stated. 
Figs. 1-8. Myzostoma willemoesii, n. sp. 
Figs. 1, 2. Outlines of the female and of the dwarf male, from a preparation by v. 
Willemoes Sulim (camera, objective 0). 
Figs. 3, 4. The female from the cyst fig. 6, magnified about 15 diameters ; from the dorsal 
(fig. 3) ; and from the ventral side (fig. 4). 
Fig. 5. The male belonging to it; magnified 75 diameters. On the left side the suckers, 
and on the right side the parapodia (from the second to the fifth) not 
drawn. 
Fig. 6. Malformed pinnule of Antedon incequalis, P. H. C. ; magnified 5 diameters. 
Fig. 7. The first three joints of this pinnule drawn from both sides. 
Fig. 8. Another malformed pinnule of Antedon incequalis , P. H. C., attached to the 
arm-joint a (also malformed). In this is contained a pair of Myzostoma 
tenuispinum, in the cyst of the pinnule b a pair of Myzostoma willemoesii , 
and both separated by a septum in the direction of the arrow ; magnified 
7 diameters. 
