308 PROCEEDINGS OF THE ACADEMY OF [1888. 



Rhipidogorgia flabellum, Valenciennes. 



The purple variety of this species is abundant more particuhirly 

 in the northern waters, both near the outer reef and on the shallows 

 known as Devonshire Flats. We failed to obtain any of the yellow 

 forms, and I am not positive that this vai'iety has ever been found 

 at the Bermudas. 



Gorgonia (Plexaura) purpurea, Pallas. 

 Gorgonia (Plexaura) flexuosa, Lamouroux. 



This species, of which we obtained several S2:)ecimens, is, I believe, 

 without doubt the Gorgonia anguiculus of Dana (U. S. Exploring 

 Expedition, Zoophytes, p. 668). It is referred to under Lamouroux's 

 name as a member of the Bermudian fauna in Dana's " Corals and 

 Coral Islands, " p. 114, 1872. 



Gorgonia (Plexaura) liomomalla, Esper. 

 Gorgonia (Plexaura) multicauda, Lam. 



( Gorgonia crassa, Ellis and Solander.) 



(G. verviiculata, 'Edwards and Haime.) 



The exact limitations and synonymy of this species are difficult to 

 make out, but as far as my studies have permitted me to analyze 

 the forms above indicated from the rather insufficient or deficient 

 descriptions that have been furnished by their authors, they appear 

 to represent an identical form. As such as I have accordingly 

 referred them in this list. 



Gorgonia (Plexaura) dichotoma, Esper. 



A single specimen, measuring about a foot and three-quarters in 

 height, with the main stems somewhat over a half-inch in diameter. 



Gorgonia (Eunicea) pseudo-antipathes, Lam. 



One much branched specimen, and another, slightly differing, 

 which appears to belong to the same species. 



Pterogorgia acerosa, (?) Pallas. 



A single specimen of a large Pterogorgia, entirely stripped of 

 coenenchyma, and measuring about two and a-half feet in height, 

 was obtained through purchase at the Crawl. The axial skeleton is 

 yellowish, or of the color of earth. The terete branches are much 

 more broadly spreading than in P. setosa, and unite into a common 

 basal stalk which is upwards of two inches in thickness. The pinn- 

 ules are very numerous, exceedingly slender, and pendulous, giving 

 to the whole organism the decided appearance of a weeping-willow. 



