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PLATE 4. 
Bolinopsis infundibulum. 
12. Side view of half-grown specimen, twice natural size. East- 
port, Maine, August 20, 1897. 
13. Side view of half-grown specimen, twice natural size, show- 
ing winding course of meridional ventral vessels in oral 
lobes. Eastport, Maine, August 23, 1897. 
14. Side view of full-grown specimen, natural size. Eastport, 
Maine, September 22, 1898. 
15. Sense-organ of ctenophore shown in figure 14. 
Drawn from life, by the author. 
