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PLATE 5. 
Bolinopsts vitrea. 
16. Larva of Bolinopsis vitrea, 7 mm. long, in the Cydippide- 
stage. Tortugas, Florida, May 17, 1899. 
17. Surface view of apical pole of larva represented in figure 16. 
ad, adradial canals; c, subtentacular meridional canals; 
cpr, perradial canals; 7, interradial canals; p, pole-plate; 
tv, tentacular canals; v, subventral meridional canals. 
18. Surface view of mouth of larva shown in figure 16. Letter- 
ing asin figure 17. gc, paragastric canals; st, mouth open- 
ing and stomodzum. 
19. Young Bolinopsts wtrea, 8 mm. long with oral lobes and 
auricles beginning to develop. Tortugas, Florida, May 
21, 1899. 
Drawn from life, by the author. 
