ACTINOZOA. 
473 
bounded ; epidermis composed of an external hard and internal soft layer, with 
many larger and smaller nutritive vessels. Polyps contained in the larger 
warts of the epidermis. Spicules of the axis long, those of the epidermis 
short, forming 4-, 6-, 6-, and 8-rayed bodies, with warty extremities (i/omo- 
phyton, Gray, ^ '=Spongiodermd). Type Solanderia verrucosa^ Mob. Sol- 
gracilis (pi. 2. figs. 1 & 2), Duch. & Mich., is not a Gorgonia, but probably a 
sponge. Sol. frauenfeldi^ Koll., is a Spongioderma. Titanidcmn suherosum^ 
Ag., is described and figured, p. IG, pi. 3. f. 3. lie adds the following table of 
the JBriareaceay which he defines as Gorgoniidce with no horny axis, their 
internal parts composed of solid calcareous spicules : — , 
I. Sympodiida. 
Sarcosoma incrusting. SymptodiuiUj Eryihropodium^ Kbll. 
(The genus Ojeda^ Duch. & Mich., does not belong here, but is truly a 
Didemnum.^ 
II. Pauagorgiacea?. 
Sarcosoma branching, divided into an outer layer and inner nucleus. 
1. Internal mass without additional nutritive vessels. Titanidemn, 
Ag., Spongioderma^ Koll. 
{Briareum grandifloi'um, Sars, will probably form a new 
genus in this subdivision.) 
2. Internal mass with larger nutritive canals. 
A. Polyps wholly retractile within the sarcosoma. 
1. Briareum. Polyps without calyx, arranged regularly on the 
stem. B. suberosunif Dana; B. palmachristi, D. & M. ; ?B. gor- 
gonidium, Bl. 
2. Paragorgia. Polyps with wart-like calyces, irregularly ar- 
ranged. 
B. Polyps only partially retractile. 
1. Solenogorgia, Genth. Stem gutter- or pipe-shaped. 
2. Semperina^ Koll. Stem cylindrical. 
Sempei'ina rubra, n. g. sp., Kolliker, 1. c. pp. 17-19, pi. 3. figs. 4-8, 
Bohel. (Described in too great detail for its characters to admit of abridg- 
ment.) 
ZOANTIIAIUA. 
M A LACODE RM ATA . 
D. RoberTvSON records Edioardsia earnea and callimorpha, Peachia hastata, 
Cerianthus Iloydi, and JIalcampa chrysanthella as new to Scotland. P. N. 
II. Soc. Glasg. ktpp. 46-73. 
Edwardsia vestita. On its habits in confinement, cf. W. B. Hughes, P. Soc. 
Birmingh. 1869, pp. 39-42, with plate. 
Xantiopus, Kef. E. Metschnikoft’ (Bull. P^tersb. xv. p. 602) describes two 
species of the larval genus Callijdwbe observed at Spezia, which appear to be- 
long to the Edwardsice, and to be nearest related to Xantiopus. 
SCLEROBASICA. 
Antipathes lenta, sp. n., Pourtales, ‘ Catalogue of Corals,’ p. 66, Carysfoot 
