342 
specimens, which have the tentacles expanded, the anterior end is 
hent slightly upwards. Anus subdorsal. 
The ventral pair of tentacles distinctly smaller than the others. 
Tubefeet of the trivium in two rather close series; those of the 
bivium also biserial, but rather distant; a few scattered, small 
tubefeet may be found in the middorsal interradius. The skin is 
rather delicate on the ventral side, hard and rough on the dorsal 
side, in correspondance with the different development of the cal- 
careous bodies in the bivium and the trivium. The epidermis is 
very thin and delicate, somewhat slimy, mud-particles being often 
fastened to it. The calcareous deposits are of two (or three) kinds. 
In the epidermis are found numerous very fine x-shaped bodies, 
somewhat irregular, only ca. O.cs mm (Fig. 29.e f). More rarely some 
of the branches are coales- 
ced; such cases make it 
evident that these bodies 
must be regarded as rudi- 
mentary cups. The deposits 
of the deeper layer of the 
skin are larger plates of 
various forms. In the ven¬ 
tral part of the body they 
are simple, smooth and lie 
b. 
a. 
Fig. 30. Radial and interradial froin calcareous 
ring of Cuciiinaria amokurce (a) and 
C. Farqahari (b). ^^/i. 
more or less widely apart. Towards the sides of the body they 
gradually become somewhat dorsad produced (Fig. 29. b); in the 
dorsal part of the body these plates are very large and coarse, 
scale-like, the prolongation forming a coarse, erect spine (Fig. 29.a). 
The plates are overlapping with their edges, the overlapping edge 
looking white, whereas the rest of the plate remains transparent; 
this gives the dorsal side of the skin a curious aspect of being 
coarsely reticulate. — In the larger specimen from Stewart Island 
numerous small, smooth or slightly knobbed plates (buttons, Fig. 29.c), 
are found along the edges of the larger plates, or in the inter- 
space between the latter, in the places wherc these do not lie so 
close together. 
The deposits of the tubefeet are of the usual shape, elongate, 
slightly branched rods (Fig. 29.d). Those of the tentacles are con- 
siderably larger. Anal teeth not distinet. 
