PLATE V. 
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. 
ph. Pharynx. 
s. Sucker. 
t. Testicle. 
u. Hook of the hook-apparatus. 
3 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. 
Fig. 1 . Myzostoma jiliferum, n. sp. 
Fig. 1. The animal, seen from the side, with the terminal threads ( CF .) of the caudal 
appendages. 
Figs. 2, 3. Myzostoma bicaudatum, n. sp. 
Fig. 2. From the ventral side, with the obtuse caudal appendages (OA). 
Fig. 3. The point of a hook. 
Fig. 4. Myzostoma jilicauda, n. sp. 
Fig. 4. The animal, seen from the ventral side, with the long caudal appendages ( CA ), 
and the short terminal threads (CF.). One of the caudal appendages was 
broken off, and is, like the point of the terminal thread CF., hypotheti- 
cally restored. In the same way the broken cirri in figs. 2 and 5 are 
restored. (The restored parts are distinguished by a lighter tint.) 
Figs. 5, 6. Myzostoma quadricaudatum, n. sp. 
Fig. 5. The animal, seen from the ventral side. 
Fig. 6. The point of a hook. 
