327 
Base and walls not porose; basis cupformed, oval, attached to 
the gorgonarian axis. Neither carina nor rostrum basally elong- 
ated. Carina generally with an exterior digitiform tooth at the apex. 
Carinolateral compartment at the base Ve to Vs of the lateral com¬ 
partment, narrowing upwards. Radii and alae with somewhat oblique 
margins so that the opening is deeply sinuose. Scutum with radial 
striae formed by grooves in the ridges of growth. 
Fig. 64. Balanus dentifer from 32° 15’ N., 
128° 12’ E. a side view, b from above. 
The coenosark of the gorgonarian pre- 
pared off. [X 5,3]. 
The specimens are white or sometimes show a faint reddish 
hue when the coral tissues have been removed. The basis is 
boat-shaped, although only in the rostral part showing a tendency 
to elongation; its periphery is 
therefore almost quite regularly 
oval. The gorgonarian axis is 
embedded in a not very deep 
rostrocarinal furrow, from which 
radiating, broad, and shallow fur- 
rows lead to the base of the 
carino-lateral compartments; sim- 
ilar furrows are also indicated 
at the junction of the rostral and 
lateral compartments; these furrows thus coincide with the radiat¬ 
ing furrows of the basis found in some ^msto-species. The basis 
is poreless; the external surface exhibits indications of radiating 
striae whereas the internal surface is entirely smooth. 
On their inner surface the compartments have low, but dis¬ 
tinet longitudinal ridges below the sheath; the latter extends half- 
way down the compartment. The external surface exhibits indistinet 
indications of radial stripes. The compartments are poreless. 
The carina is rather broad, tapering upwards; at the apex 
a prominent tooth is situated externally just below the apex with 
its summit projecting a little above the margin, and pointing up¬ 
wards and outwards. In two of the specimens this tooth was not 
observed, but it seems most likely that it has been broken off, 
when the dried coenosarkal parts of the corals were prepared off. 
In two other specimens a similar tooth was again observed near 
the apex of one of the lateral compartments (Fig. 64). 
The carino-lateral compartment is narrow, about Vs or l /& 
