ZOOLOGY OF THE BERMUDAS. 119 



just as suddenly diminish again, the projection being of slight 

 extent. The parieto-basilar muscles are well developed and 

 form conspicuous folds. Both external and internal mesen- 

 terial stomata are present (PI. II, fig. 1). All the mesenteries 

 with the exception of those of the first cycle are gonophoric. 



The differences between D. Bermudensis and D. delicatula 

 may be briefly enumerated as follows: 



I). Bermudensis. D. Delicatula. 



Tentacles 96. Tentacles 160. 



Fronds digitiform, about 12 in Fronds dilated at the ex- 

 number, tremity, about 42 in number. 

 Mesogloeal processes of sphinc- Mesogloeal processes of 

 ter muscle rather delicate, sphincter stout, not anas- 

 anastomosing slightly. tomosing. 

 Ectoderm al muscle processes of Ectodermal muscle processes 

 disc wanting (?) of disc long and delicate. 



PHYMANTHID.ZE. 



Phymanthus crucifer. (Les.) Andres. 



A single specimen of this species was obtained. I have 

 nothing to add to the statements already made regarding it in 

 my paper on the Bahama Actiniaria. 



ZOANTHID^B. 



Zoanthus flos-marinus. Duch. and Mich. (PI. 11, figs. 3 and 4.) 



A large number of specimens of this species were obtained, 

 and inclosed with them was a label stating that they were col- 

 lected at Shelly Bay and Tucker's Town. In general appearance 

 they resemble Z. sociatus from the Bahamas, the individuals as 

 in that species forming stolon-like prolongations from which 

 new individuals bud ; their structure, however, shows them to 

 belong to a different species. The colonies are, according to 

 the accompanying label, 4 to 5 cm. in breadth. The indi- 

 vidual polyps in the preserved condition measure 1-2 cm. in 

 height, and in breadth at the upper end 0-5 cm. the lower 

 portion and stolons measuring about 0.25 cm. All are strongly 

 contracted, a small depression being the only indication of 



