726 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



Fig. 9. Ptilosarcus quadrangularis. Section of leaf to show ova and septa between 

 leaf chambers. 



10. Ptilosarcus quadrangularis. Surface view of portion of zooid band, enlarged. 



11. Ptilosarcus quadrangularis^. Cross section of rachis, showing zooids and muscle 



bands. 



Plate LXXXVI. 



Fig. 1., Halisceptrum cystiferuni, new species, somewhat reduced. 



2. Stylatula elongata. Dorsal and ventral views of distal part of colony. Pho- 



tographed from living specimens, slightly reduced. 



3. Acanthoptilum gracile. Dorsal view of part of rachis, enlarged. 



4. Acanthoptilum. gracile. Ventral view of part of rachis, enlarged. 



5. Acanthoptilum album, new species. Parts of colony, reduced. 



6. Acanthoptilum album. Dorsal and ventral views of part of rachis, enlarged. 



7. Acanthoptilum album. Lateral view of leaves. 



8. Acanthoptilum. album. Fragments, showing polyps. 



9. Acanthoptilum scalpelliforme. Dorsal view, enlarged. 



10. Acanthoptilum scalpelliforme. ^"entral view, enlarged. 



11. Acanthoptilum annulatum, new species. Part of colony, reduced. 



12. Acanthoptilum annulatum. Ventral view of part of rachis, enlarged. 



13. Acanthoptilum annulatum. Leaves, showing polyps, enlarged. 



Plate LXXXVII. 



Fig. 1. Balticina pacifica, new species. Parts of colony, somewhat reduced. 



2. Balticina pacifica. Part of rachis, showing polyps, enlarged. 



3. Halipteris contorta, new species. Parts of colonies, slightly reduced. 



4. Halipteris contorta. Part of colony, enlarged, showing calyces. 



5. Stachyptilum superbum. Parts of rachis showing ventral and dorsal views, 



and of stem, about natm-al size. 



6. Stachyptilum superbum. Ventral and dorsal views of part of rachis, enlarged. 



7. Stachyptilum, quadridentatum, new species. Part of rachis, somewhat reduced. 



8. Stachyptilum quadridentatum. Part of rachis, ventral aspect, enlarged. 



9. Umbellula loma, new species. Two views of rachis, and one of proximal part 



of stem, about natural size. 



10. Distichoptilum verrUlii. Portions of colony, somewhat reduced. 



11. Benilla amethystina. Colony with expended polyps, slightly reduced. 



Plate LXXXVIII. 



Fig. 1. Plumarella longispina. Part of colony, someAvhat reduced. 



2. Plumarella longispina. Branches, enlarged. 



3. Eumuricea pusilla, new species. Fragments, somewhat rediiced. 



4. Ewmuricea pusilla. Parts of branches, enlarged. 



5. Psammogorgia simplex, new species. Parts of colony, somewhat reduced. 



6. Psammogorgia simplsx. Parts of branches, enlarged. 



Plate LXXXIX. 



Fig. 1. Psammogorgia torreyi, new species. Part of colony, somewhat reduced. 



2. Psammogorgia torreyi. Ends of branchlets, enlarged. 



3. Psammogorgia spa^tldingi, new species. Colony with expanded polyps, some- 



what reduced. 



4. Psammogorgia spauldingi, end of branch with expanded polyps, enlarged. 



5. Stenogorgia kofoidi, new species. Colony, somewhat reduced. 



6. Stenogorgia kofoidi. Portion of branch, enlarged. 



