42 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
teeth than the abdominal ones (fig. 8f; 10 per ramus), The pygidium 
is not known in spite of very many specimens obtained with a grab 
digging to about 15 cm depth. 
Figure 8.—Macroclymene? species: a, anterior end from above and slightly from the left 
side; b, left side view of anterior end; ¢, acicular spines from second setiger; d, detail of 
capillary seta from fifth setiger; ¢, detail of short capillary seta from middle portion 
of body; f, hook from middle portion of body. Pista fasciata: g, thoracic hook from 
third setiger; h, thoracic hook from 17th setiger. Scionella japonica, setae from median 
thoracic setiger: i, long capillary seta; 7, short capillary seta. Potamilla myriops: k, 
dorsal view of anterior segments; /, thoracic hook. 
The tube is made of a fairly firm, thin layer of very fine sand. Im- 
mature flattened eggs taken in August from an anterior end of 12 
setigers of 35 mm length and 1.1 mm width measured up to 250u 
across, 
