A. E. Verrill — Anihozoa and Hydrozoa of the Bermitdas. 561 



A variety or distinct species, with disks up to 3"™ in diameter, 

 occurs, more closel}^ grouped, on a sponge of the genus Hircina. 



Zoanthus sociatus Les., 1817. 



Zoanilms sociatus McMurrich, Actin. Bahama Is., p. 62, pi. ii, fig. 3 ; pi. iv, figs. 



15-18, 1889. 

 ?Zoanthus flos-marinus Duerden, Jamaican Actin., part i, p. 339, pi. xviiA, fig. 2, 



pi. xviiiA, fig. 2, 1898 (non Duoh. and Midi.). 



Several specimens were obtained that seem to agree with this 

 species as described by McMurrich, from the Bahamas, and with the 

 Z, flos-marinus of Duerden. The latter has much smaller polyps 

 than the original type of Duch. and Mich., and differs in form, 

 color, and number of tentacles. (See p. 566, below.) 



Zoanthus proteus, sp. no v. 



? Zoanthus Dance. Hertwig {non Verrill). 



Zoanthus flos-marinus McMurrich, The Bermuda Is., p. 119, pi. xi, figs. 3, 4, 1889. 



Plate LXVII. Figures 5, 5a, 55. 



Polyps of moderate size, extremely variable in form and height, 

 united into more or less extensive clusters either by slender narrow 

 stolons, or by flat expansions of coenenchyma, or directly, the buds 

 often springing from the basal regions of the column, or even from 

 higher up on the sides, so as to appear furcate or branched ; some- 

 times stolons also arise from above the base. The polyps may be 

 crowded or loosely aggi-egated; column may be short or long cylin- 

 drical ; bottle-shaped; jug-shaped; club-shaped; or tall, slender, 

 trumpet-shaped ; all these forms often occurring in one cluster (see 

 figs. 5-56). The wall is soft, but often has dirt, grains of sand, etc., 

 adhering slightly to the surface, except on the upper third or fourth 

 part, which is smoother and naked, so that the surface is usually 

 divisible into two regions ; but this difference is not always evident. 

 A constriction sometimes occurs between the two areas (fig. 5). 



Tentacles numerous, slender, usually 48 to 52. 



Color of column usually olive-green, sometimes bluish above; disk 

 and tentacles pale ochre-yellow, with white specks, sometimes 

 greenish. 



Height of longest polyps, in contraction, 18™™; greatest diameter, 

 3.5 to S™"" ; height of short forms, 4 to 6"'" ; diameter, 4 to o'""'; 

 height of medium polyps, about 10™'"; diameter, 3 to 5™™. 



At and just below low-tide mark, on the reefs, adhering to stones 

 and dead corals. 



