568 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXXIV. 
Type.—Cat. No. 25352, U.S.N.M.: Albatross Station 3842, south 
coast of Molokai, 495-506 fathoms. Numerous specimens. 
The polyps of this species are very easily detached, and but few 
remain in place on the specimens secured, most of them having fallen 
to the bottom of the jar. 
~ 
Genus CLADISCUS Koren and Danielssen. 
Spicules absent or sparsely distributed; calyces present, but indi- 
cated only by the eight shallow lobes around the margin. 
CLADISCUS STUDERI, new species. 
Plate XLII, figs. 5, 6. 
Colony attaining a height of 150 mm.; end bulb not well developed ; 
stem with a stiff axis which is quadrangular in section, and measures 
41 mm. to the lowest rudimentary polyps. : 
Calyces long, cylindrical, crowded on ventral and lateral surfaces 
so densely that no distinct arrangement in series can be discerned; - 
differing greatly in size, those of different sizes being intermingled, 
except on basal part of rachis where they are all small; the longest 
about 6 mm. in height. The calycine walls are so thin and so nearly 
devoid of spicules that the polyps appear to be without calyces at 
first view, and the walls are semitransparent, showing eight longitu- 
dinal bands corresponding to the mesenteries inside. The margin 
is ornamented by eight pointed angular flaps that are sometimes 
everted. The polyps are retractile and have long tentacles. 
Spicules are not entirely wanting, as in other species of the genus, 
but are very sparsely distributed, being found mainly in the eight 
longitudinal bands on the polyp walls, where they are needle-like and 
colorless. On superficial examination the spicules appear to be en- 
tirely absent. | 
Zooids.are scattered in small groups of four or five between the 
bases of the polyps on the dorsal surface of the rachis. The ventral 
surface has a broad band entirely devoid of polyps and zooids. 
Color.—Very pale brown in the two specimens secured. | 
Type.—Cat. No..25347, U.S.N.M., Albatross Station 4002, off Kauai 
Island, 538-230 fathoms. 
Koren and Danielssen say that Cladiscus loveni and C. gracilis have 
well marked calyces, although Kolliker overlooked the fact. C. loveni 
is said to be entirely without spicules. 
The crowding of the polyps destroys the bilateral symmetry char- 
acteristic of the family, the only indication of such symmetry being in 
the bare ventral band. 7 
