NO. 1624. DESCRIPTIONS OF HAWAIIAN ALCYONARIA—NUfTINQ. 573 

 Siabfaxnily I>IiI]VI]SrOIN-.^E ^ersliays. 



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, lig. 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 t)ften 

 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 gitt>erti^ Avhich otherwise resembles 

 this species. They are usuall}'' rounded, oval or ovate in outline. 



Color light buffy throughout. 



Type.— C?ii. No. 22583, U.S.N.M., Albatross, station 3982, off 

 Kauai, 40-233 fathoms. 



Although 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 allied. 



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. 



AmpMlapMs regularis Wright and Studer, Report on the Alcyonaria col- 

 lected by H. M. S. Challenger during the years 1S73-1876, 1S89, p. 71. 



A single specimen in the Hawaiian collection is referred to this 

 species. 



