PLATE XVI. 
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. 
<$ 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 he not expressly stated. 
Figs. 1-7. Stelechopus liyocrini, n. gen. and n. sp. 
Fig. 1. Combined from several sketches (camera, objective 0). CA, caudal appendage; 
mm., parallel muscular bundles passing from the integument to the intestine. 
Fig. 2. Fore part of the body, the mouth retracted, seen from the ventral side (camera, 
objective 0). 
Fig. 3. Extended fore-end of another individual. 
Fig. 4. Hind-end of the smallest individual, with the last two pairs of parapodia, and the 
caudal appendage (CA) (camera, objective 0). 
Fig. 5. Profile view of the back, with its skin divided by longitudinal and cross furrows 
into flat papillae. 
Fig. 6. A parapodium with its muscle mass much enlarged (camera, objective 0). 
cu., cuticule ; m., %, m 2 ., muscles of the hook-apparatus. 
Fig. 7. A ripe egg (camera, objective IV.). 
