. 
No. 16%. DESCRIPTIONS OF HAWAIIAN ALCYONARIA—NUTTING. 573 
Subfamily PRIMNOIN 44 Versluys. 
Operculum present. Scales large, not more than eight rows on 
polyp body, each row that is complete containing at least five scales. 
Genus AMPHILAPHIS Wright and Studer. 
Colony flabellate; calyces club-shaped, arranged in pairs on basal 
parts of branches, and irregularly distributed on distal parts. 
AMPHILAPHIS BISERIALIS, new species. 
Plate XLIII, fig. 3; plate XLVII, fig. 4. 
The single fragment secured was 65 mm. high, and consisted of a 
stem or branch giving off alternate branches at intervals of about 
18 mm. . 
The polyps are small, 1$ mm. long, club-shaped, nearly straight, 
and form an acute angle with the stem or branch. They are strictly 
opposite on the main stem, and nearly always on the branches; but 
on the distal ends of the latter they are sometimes in whorls of three. 
The calyx walls are covered with large imbricating squamous spicules 
in about five whorls, and usually four longitudinal rows. Scales often 
ctenate on the distal edges and also often show undulating edges; 
surfaces often sculptured with radiating lines or furrows. Oper- 
culum nearly concealed, in side view, by the last whorl of body 
spicules, composed of broadly triangular scales, ribbed and fluted. 
Sometimes the alternate opercular scales are elevated and depressed, 
giving the appearance of two whorls of four each. 
Spicules on stem and branches broad, scale-like, lamelliform, and 
much larger than in Caligorgia gilberti, which otherwise resembles 
this species. They are usually rounded, oval or ovate in outline. 
Color hight buffy throughout. 
Type.—Cat. No. 22583, U.S.N.M., Albatross, station 3982, off 
Kauai, 40-233 fathoms. 
Alihon en this species does not quite agree with the definition of 
the genus Amphilaphis, it seems to me to belong here, the opposite 
disposition of the polyps making it necessary to remove it from 
Plumarella, to which it is closely alhed. ° 
The sculpturing of the scales seems to indicate a close affinity with 
Caligorgia, from which it is separated by the fact that the polyps 
are not appressed to the cortex, as in that genus. 
AMPHILAPHIS REGULARIS Wright and Studer. 
Amphilaphis regularis WRIGHT and SruprER, Report on the Alcyonaria col- 
lected by H. M. S. Challenger during the years 1873-1876, 1889, p. 71. 
A single specimen in the Hawaiian collection is referred to this 
species. 
