No. 1624. DESCRIPTIONS OF HAWAIIAN ALCYONARIA—NUTTING. 567 
Calyces very small, not more than 14 mm. high. Polyps retractile, 
without spicules. 
Spicules needle-like, abundant, disposed longitudinally, or nearly 
so, throughout the colony. 
Zooids large, arranged on each side of a bare mid-ventral band. 
They are very sparsely distributed on lateral and dorsal surfaces. 
Each zooid is surrounded by a tuft of converging spicules. 
Color.—Deep rose red on rachis and calyces. Stem light yellow. 
The polyps were probably bright yellow in hfe, but are a yellowish 
white in alcohol. 
Type.—Northeast approach to channel between the islands of Maui 
-and Molokai: Station 4096, 272-286 fathoms (Cat. No. 22585, 
U.S.N.M.) 
Named for Prof. E. P. Wright. 
Genus TRICHOPTILUM Kolliker. 
- Polyps alternately arranged; margins of calyces with eight spines; 
spicules numerous in calyces and tentacles; zooids dorsal. 
TRICHOPTILUM ATTENUATUM, new species. 
Plate XLII, fig. 8. 
Colony exceedingly long and slender. Entire length 325 mm.; stem, 
from base to first rudimentary polyps, 112 mm. There is a slightly 
swollen end bulb, and a less pronounced gentle swelling about 37 mm. 
above it. Average diameter of stem about 14 mm. The stem is quad- 
rate in section. 
Polyps arranged somewhat irregularly in two dorso-lateral rows, 
sometimes opposite and sometimes alternate, large and small indi- 
viduals being interspersed. 
The individual polyps are large and conspicuous, with exceedingly 
elongated calyces which attain a length of 6 mm. and a diameter of 
1$ mm. The basal part of the body is sharply differentiated from 
the distal, the former being transversely wrinkled and having the 
needle-like spicules crisscrossed, having a length of about 3$ mm., 
and appearing somewhat like a short branch with which the second 
part or true calyx is continuous. This second part 1s somewhat 
swollen in the middle and bears eight narrow longitudinal bands of 
spicules continuing upward above the margin into eight sharp teeth. 
The tentacles are without spicules, and are arranged in a cylindrical 
vertical bundle in contraction. 
Spicules, needle-like, abundant in rachis and calyces. 
Zooids in short rows of two or three on dorsal surface, running 
obliquely inward from below the bases of the calyces. 
Color.—The stem and rachis is white, polyps umber-brown. 
