198 
PACIFIC SCIENCE, Vol. Ill, July, 1949 
(1931: 20). The manner of branching and 
anastomosis is quite different, the meshes of 
S. mollis being much longer and more regular 
than those of S', verriculata. 
Genus Keroeides Wright and Studer 
Keroeides koreni Wright and Studer 
PL 3, fig. 3 
Keroeides koreni Wright and Studer 1889: 169, 
pi. 40, fig. 3. 
Keroeides gracilis Whitelegge 1897: 308, pi. 
16, figs. 1-5. 
Keroeides gracilis + K. pallida Hiles 1899: 201, 
pi. 22, figs. 12-16. 
Keroeides gracilis Thomson and Henderson 
1905: 287. 
Keroeides gracilis + K. koreni Thomson and 
Henderson 1906: 22, pi. 1, figs. 6-7; pi. 4, 
figs. 1-3. 
Keroeides koreni Thomson and Simpson 1909: 
167. 
Keroeides koreni Kinoshita 1910: 226. 
Koroeides {sic'] koreni Nutting 1911: 31, pi. 6, 
figs. 3, 3a. 
Keroeides koreni Kiikenthal 1919: 120. 
Keroeides koreni Kiikenthal 1924: 46. 
Keroeides koreni Aurivillius 1931: 38. 
Diagnosis: Colony erect, branched in one 
plane, with occasional anastomosis. Stems round 
in cross section, 2.5 mm. in diameter; twigs also 
round, 1.0 mm. in diameter. Sub-conical ver- 
rucae 1.0 mm. in width at the base by 1.0 mm. 
in height, and from 1.5 to 4.0 mm. apart, biser- 
ially and often alternately along the sides of the 
branches. Coenenchyma thin, filled with large 
fusiform to oval, and sometimes flattened, 
spicules; zooids armed with smaller spindles. 
Sclerites bright red in color. Axis composed of 
smooth, terete spindles, light red in color, joined 
together by horny matter. Entire colony bright 
red, axis paler. 
Spicule measurements: 
Spindles: 1.05 X 0.25 mm.; 0.47 X 0.14 mm.; 
0.39 X 0.11 mm. 
Ovals: 0.54 X 0.21 mm. 
Spindles of the zooids: 0.15 X 0.03 mm. 
Spindles of the axis: 0.32 X 0.06 mm.; 0.25 X 
0.04 mm. 
Locality: Station 12. 
Specimen: One, preserved dry, U.S.N.M. No. 
44075; branches thereof in alcohol, U.S.N.M. 
No. 44076. 
Remarks: The Resurvey obtained one fine 
specimen, 127 mm. in height and 105 mm. in 
maximum width, which agrees very closely with 
the original and subsequent descriptions. 
Genus Paracis Kiikenthal 
Paracis squamata (Nutting) 
Fig. 6a^e; PI. 1, fig. 1 
Ac is squamata Nutting 1910a: 42, pi. 7, figs. 2, 
2a; pi. 20, fig. 50. 
Acis squamata Nutting 1912: 81. 
Paracis squamata Kiikenthal 1924: 158. 
Acis squamata Thomson and Dean 1931: 200, 
pi. 5, fig. 2; pi. 16, fig. 9. 
Paracis squamata Aurivillius 1931: 145 (in key 
only). 
Diagnosis: "Colony flabellate, 14.3 cm. in 
height and with a spread of 4.9 cm. The main 
stem is round, 3.8 mm. in diameter. 1.6 cm. 
from its base it gives off a short branch, and from 
that point to near its distal end it gives off 
roughly alternate branches, several of which give 
off branchlets nearly all of which are on one 
side of the branch. The branches near the distal 
end of the colony are more symmetrical in their 
branchings than the more proximal ones. The 
calyces are borne almost exclusively on the sides 
and front of the stem and branches, where they 
are unevenly distributed, varying from .5 mm. 
to 2.2 mm. in the distance between them. 
"The individual calyces are short tubes aver- 
aging about 1.5 mm. in height, and about the 
same in diameter. Their walls are composed of 
plate-like or scale-like spicules of various shapes; 
but fitted to each other, although they sometimes 
overlap somewhat. The ends, or edges, of the 
distal row form a scalloped border around the 
calyx margin. There seems to be no regularity 
whatever in the disposition of these calyx spi- 
cules. They are also exceedingly irregular in 
