56 ACALKPILE 



Ti:e larger Actinia, milk-white, with orange disc and tentacles, is 

 foinid sparingly between 120 and 195 fathoms. The smaller appears 

 to live imattached in sand, in abont 90 I'athoms: it is of brownish color, 

 and disk-sha])ed when contnictcd. 



A Palvthoa not verv dillerent from 1\ occUalu Lamx. from the Florida 

 coast is quite common, ranging from 35 to 287 fathoms, attached in 

 considerable nnmliers to Ibreign bodies. 



A large black Palythoa appears to live solitary in 42 fathoms. 



One specimen of an llyanthus was found in 124 fathoms, ofi^ Tor- 

 tugas. 



A disk-shaped Actinian covered with sand was obtained in 85 fathoms 

 off Tennessee Reef, and in 91 and 93 fathoms oif Bahia Honda and oflf 

 the Samboes. It probably belongs to the new genus Ammodiscus 

 Carpenter, dredged off the coast of Portugal. It is not destitute of ten- 

 tacles in my specimens. 



Okdei; ACALEPII.E. 

 SuBJiiDER IIYDROIDE.E Joiinstox. 



MILLEPOIUD.E Agass. 



Mllhpnrl,hc M-Einv. \ II. 



Since Professor .\gassi/."s (irst announcement of the alliuitles of the 

 jVIiUepoi'es with the hyih'oid polxps. it does not appear that new obser- 

 ^■a!i()ns have Keen iua(h' on the subject, although twenty years have 

 elapsed since. 'I'he polv |is ol' Millcpora are very ditf.eult to ohsei-ve. 

 not only on aeeoiuit of their \cry small size, but also because they re- 

 (piire peculiar care in eolleetiug. being killed by the shortest contact 

 witii ail', if they have finall\- expanded, after much patient waiting on 

 the part of the observer, tlu; least shock to the vessel, or attempt to 

 bring the specimen in a convenient position, is sudicient to make the 

 polyps contract instantaneously and often linally. 1 have succeeded 

 Ijut once in having a g0(jd \ iew of oni; of tlie larger ])oIyps of Millc- 

 ■pora (dcieornix, in comjiany with I'rol'essor Agassiz. It differed from the 

 figure in the " Contributions to the Natural History of the United 

 States," Vol. 111., Plate XV., fig. 6, in being comparatively shorter, and 

 having larger tentacles or rather tentacular masses studded w'ith las.so 

 cells, five in nundier instead of four. The mouth was not seen very 



