62 DESCRIPTIOX OF THE PLATES. 



PLATE XXIV. 



Figs. 1-4. Aglaophenia lophocarpa. 



Fig. 1. Natural size. 



Fig. 2. Portion of pinna, magnified ; lateral view. 



Fig. 3. Portion of stem with pinnaj, magnified ; front view. 



Fig. 4. Corbula, magnified. 



Figs. 5-9. Aglaophenia apocarpa. 



Fig. 5. Natural size. 



Fig. 6. Portion of a pinna, magnified ; lateral view. 



Fig. 7. Portion of stem with pinna;, magnified ; front view. 



Fig. 8, Corbula, magnified. 



Fig. 9. Part of a leaflet of a corbula showing the lateral nematophores ; still further magnified. 



PLATE XXV. 



Figs. 1-4. Aglaophenia gracilis. 

 Fig. 1. Natural size. 



Fig. 2. Portion of a pinna, magnified ; lateral view. 

 Fig. 3. Same, front view. 

 Fig. 4. Portion of stem with pinna, magnified; oblique view of pinna. 



Figs. 5 -9. Aglaophenia rigida. 



Fig. 5. Entire colony, natural size. 



Fig. 6. Portion of pinna, magnified ; lateral view. 



Fig. 7. Same, front view. 



Fig. 8. Corbula, magnified. 



Fig. 9. Part of one of the ridges of the corbula, still further magnified. 



PLATE XXVI. 



Figs. 1-8. Aglaophenia distans. 



Fig. 1. Entire colony, natural size. 



Fig. 2. A portion, magnified. 



Fig. 3. Portion of the hydrotheca, still further enlarged to show the anterior tooth-like process. 



Fig. 4. A hydrotheca differing somewhat in form from the normal hydrothecae, but associated with these 



in the same colony ; magnified. 

 Fig. 5. Orifice of hydrotheca viewed from above. 



Fig. 6. Portion of a pinna with two hydrothecae viewed in front; magnified. 

 Fig. 7. Corbula, magnified. 

 Fig. 8. One of the leaflets of a corbula, still further magnified. 



(a) Peduncle of leaflet. 



(6) Suj)racalycine nemato])hores but slightly altered. 



(c) Mesial neuiatophore greatly enlarged and altered in form. The slightly altered hydrotheca 

 is seen included between the supracalycine and mesial nematophores. 



Figs. 9, 10. Aglaophenia sigma. 

 Fig. 9. Natural size. 

 Fig. 10. Portion of a pinna, magnified. 



PLATE XXVII. 



Figs. 1-3. Aglaophenia bispinosa. 



Fig. 1. All oiitiro cdloiiy, natural size ; front view. 



Fig. 2. The same, lateral view. 



Fig. 3. Distal portion of tlie stem, magnified. 



