jjo. 1658. ALCYONARIA OF THE GALIFORNIAN COAST— NUTTING. 725 



Studer, Theophile. Note preliminaire sur les Alcyonaires. Bulletin of the 

 Museum of ComiDarative Zoology, XXV, No. 5, 1894. 



Verrill, a. E. Revision of the Polypi of the Eastern Coast of the United States. 

 Memoirs Boston Soc. Nat. Hist., I, 1864. 



— — Review of the Corals and Polyps of the West Coast of America. Trans. Con- 

 necticut Acad. Arts and Sci., I, Pt. 2, 1868. 



Note. Amer. Joum. Science and Arts, 3d ser., VII, 1874, p. 70. 



Brief contributions to Zoology fi'om the Museum of Yale College, No. XL. 



Amer. Jom:n. Sci. and Arts, XVII, 1879. 



Brief contributions to Zoology from the Museum of Yale College, No. LI. 



Amer. Joum. Sci. and Arts, XXIII, 1882. 



Report on the Anthozoa. Bull. Mus. Comp. Zool., XI, No. 1, July, 1883. 



Wright, E. Percival, and Studer, Th. Report on the Alcyonaria collected by 

 H. M. S. Challenger during the years 1873-1876. Challenger Reports, Zoologj^, 

 XXXI, No. 1, 1889. 



EXPLANATION OF PLATES. 



The photographs were taken by the author. The drawings of the spicules and 

 histological details were made under the camera lucida by Mr. Otto F. Kampmeier, 

 of the Department of Zoology, State University of Iowa. 



Plate LXXXIV. 



Fig. 1. Telesto ambigua, new species. Somewhat reduced. 



2. Telesto ambigua Portions of colonies, X 6. 



3. Anthomastus ritteri, new species. Colony, somewhat reduced. 



4. Ptilosarcus quadrangularis . A young specimen, dorsal aspect. 



5. Ptilosarcus quadrangularis . Ventral aspect of same specimen. 



6. Ptilosarcus quadrangularis. Part of ventral aspect of rachis of large specimen. 



7. Ptilosarcus quadrangularis. Dorsal view of same. 



8. Ptilosarcus quadrangularis. Ventral view of rachis, showing abnormal growth 



of rudimentary pinnae on zooid band to the left. 



9. Ptilosarcus quadrangularis. Two small specimens with expanded polyps. 

 10. Ptilosarcus quadrangularis. The smallest colony examined. Somewhat 



reduced . 



Plate LXXXV. 



Fig. 1. Ptilosarcus quadrangularis. View of distal end of. colony, showing the appear- 

 ance of whorls of polyps caused by crowding of pinnae. 



2. Ptilosarcus quadrangularis. Upper left figure, cross section of stem and axis, 



showing septa, stem chambers, and spongy tissue. Upper right hand, sec- 

 tion of stem taken below proximal end of axis. Lower figure, section across 

 rachis with a pair of pinnte attached. 



3. Ptilosarcus quadrangularis. To the left, surface of stem. To the right, innei' 



surface of stem cavity showing stomata; also the spongy tissue of wall of 

 stem. 



4. Ptilosarcus quadrangularis. Two small pinnae, or leaves, showing polyp band. 



5. Ptilosarcus quadrangularis. Edge of polyp band with polyps retracted, show- 



ing bimucrouate calyces. 



6. Ptilosarcus quadrangularis . Portion of pinna, enlarged, showing expanded 



polyps and the longitudinal chambers of the leaf. 



7. Ptilosarcus quadrangularis. A few of the polyps, magnified. 



8. Ptilosarcus quadrangularis. Cross sections of leaf. Above, section just below 



polyp band, showing gullets and mesenteries of polyps, and the arrange- 

 ment of body cavities due to crowding. The middle and lower figures show 

 sections taken below the gullets. 



