574 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXXIV. 
Distribution—Offt French Frigate Shoal; Station 3973, 395-397 
fathoms (Cat. No. 25386, U.S.N.M.). 
Specimens were secured by the Challenger in the South Atlantic, 
near Tristan da Cunha, at a depth of 75 fathoms; and off Nightin- 
gale Island, 100-150 fathoms. 
Genus CALIGORGIA Gray (emended by Studer). 
Calyces bilateral, appressed to the cortex. Spicules seale-like, often 
with conspicuous sculpturing in the form of radiating ridges and 
ctenate edges. 
CALIGORGIA GILBERTI, new species. 
Plate XLIII, fig. 4; plate XLVII, fig. 6. 
Colony (incomplete) about 325 mm. high. Main stem wavy in out- 
line, giving off alternate branches which themselves often resemble 
the main stem and which give off alternate branchlets at intervals of 
about 18 mm. The whole colony is flabellate in form. 
Calyces arranged in whorls of five (rarely four) to seven, rather 
closely approximated, club-shaped, with their inner sides appressed to 
the cortex. Height, 14 mm. 
Spicules on calyx walls squamiform, numerous, with imbricating 
edges, distal edge often ctenate. The rows of scales are in annular 
whorls, and the more distal ones are often sculptured with radiating 
lines ending in the points which form the ctenate distal edges of the 
scales. Opercular scales eight, broad, flat, curved, the ventral ones 
not being notably smaller than the dorsal. 
_ The distal ends of the polyps are bent strongly toward the cortex, 
so as to face the stem or branch. 
Color.—light yellow in alcohol. The fresh specimens were a 
bright corn yellow. 
Named for Prof. Charles H. Gilbert, of Stanford University. 
Type.—Cat. No. 25364, U.S.N.M., Albatross Station 4130, off 
Kauai, 283-309 fathoms. 
Distribution Off Kauai: Station 3992, 528 fathoms (Cat. No. 
95363, U.S.N.M.); Station 4130, 283-3809 fathoms (Cat. Nos. 25364 
and 25388, U.S.N.M.); Station 4132, 257-312 fathoms (Cat. No. 
99592, U.S.N.M.); Station 4134, 225-324 fathoms. Off Hawaii: 
Station 4041, 382-253 fathoms. 
Genus STENELLA Gray. 
Polyps in whorls, with their calyces rigidly extending at right 
angles from branches. Body scales very large, in less than five rows, 
and very distinct from the opercular scales. 
