484 



PKOCEEDINGS OF THE AMERICAN ACADEMY. 



Genos LYTOCARPUS Kirchenpauer, 1872. Figure 37. 

 Lytocarpus philippinus Kirchenpauer. 



Lytocarpus philippinus is found at the places where hydroids most 

 abound along the shores of Bermuda. It was also dredged from the 



Challenger banks, south of Bermuda. 

 It was first described by Kirchenpauer 

 from the Philippine Islands, and since 

 has been noted from many stations in 

 the Pacific and from Jamaica. 



The following slight variations from 

 the description and plate of Nutting are 

 to be found : the mesial nematophore 

 is longer ; the intrathecal ridge nearer 

 the base, and the colony shorter. 



^. 



1 



Genus PLUMULARIA Lamarck, 1815, 



modified by Nutting, 1900. 



Plumularia alternata Nutting. 



Figure 37. 



Lytocarpus philippinus. Base of 

 pinna (X 105). 



Nutting has described this form from 

 a collection made by Agassiz at Barra- 

 cuda Rocks during the cruise of the 

 I found it to be one of the less common 

 hydroids growing upon the floating Sargassum in the vicinity of 

 Bermuda. The gonosome is not known. 



"Wild Duck" in 1893. 



Zoological Laboratort, Syracuse Univehsitt, 

 July, 1906. 



Bibliography. 



Allman, G. J. 



'71. A Monograph of the Gymnoblastic or Tubularian Hydroids. Ray 

 Soc. piibl. for 1869 and 1870. 450 pp., 83 text figs., and 23 pis. 



'77. Report on the Hydroida collected during the Exploration of the Gulf 



Stream by L. F. de Pourtalfes, Assistant United States Coast Survey. 



Mem. Mus. Comp. Zool. Harvard Coll., Vol. 5, No. 2, 66 pp., 34 pis. 

 Clarke, S. F. 



'79. Report on the Hydroida collected during the Exploration of the Gulf 



Stream and of the Gulf of Mexico by Alexander Agassiz, 1877-1878. 



Bull. Mus. Comp. Zool. Harvard Coll., Vol. 5, No. 10, pp. 241-252, 



pis. 1-5. 



