the Actiniartan Family Alicide. ll 
occur at the termination of each branch; the endoderm 
becomes much thickened and contains granular matter. 
Gonads.—In one specimen dissected developing ova were 
found in great numbers extending almost the whole length 
of the mesentery, and in places giving rise to considerable 
enlargements. 
Bunodeopsis strumosa, Andres. (PI. I. fig. 5.) 
Bunodeopsis strumosa, Andres, 1880, p. 315. 
Bunodeopsis strumosa, Andres, 1883, p. 444, pl. vi. fig. 1, pl. xiii. fig. 5. 
Form*,—Base adherent, usually large and oval, but variable 
in size and shape. Column short, delicate, very extensible, 
protruding here and there in irregular outgrowths or vesicles, 
the latter varying in size and simple or compound, apparently 
sessile, and having only very slight tubercular and annular 
superficial thickenings ; capitulum much developed, smooth, 
delicate, regular, cylindrical, or caliciform. Disk medium, 
wider than capitulum, rounded, either flat, concave, or promi- 
nent, without gonidial marks. ‘Tentacles retractile +, not 
very numerous (48), tricyclic, 12 [6, 6?], 12, 24, entacmzous, 
large, marginal, erect or bent outwardly, subulate, very 
flexible, covered with urticating spots. Peristome variable, 
with radiating lines; mouth sometimes with reversed lips, 
but not a special character; gonidial grooves wanting. 
Colour. — Base whitish-brownish-yellow. Column yel- 
lowish, with yellow-brownish-ochre bands. Capitulum dirty 
white, uniform, transparent. ‘Tentacles transparent, whitish. 
Peristome whitish. 
Dimensions.—Small; basal diameter 1°5 to 2 centim.; 
length of tentacles 2 centim. 
Locality—Habitat on the leaves of Cymodocea, equorea 
(Phycagrostis minor), uprooted, floating on the surface, or else 
on Posidonia, Zostera, &c. Also on stones and rocks. 
Varieties.—(a) badia. As above. 
(8) cana. Entirely white; most frequently found on the 
shores of Lake Fusaro, Naples; more delicate and small. 
Base.—The layers of the base are well developed, being 
much thicker than in the vesicular portion of the column-wall. 
The ectoderm is covered with a layer of short closely-set 
cilia; elongated nuclei are arranged in a narrow peripheral 
* The description of the external characters is practically a translation 
of that given by Andres in ‘ Le Attinie.’ 
+ A curious instance of extreme retraction was met with in one 
specimen ; the tentacles had been withdrawn into the ccelenteron, and 
afterwards one was forced into the interior of a distended vesicle. 
