THE ALCYONARIA OF PORTO RICO. 
283 
Muricea flexuosa Verrill. Fig. F. 
( Lissogorgia flexuosa V erril 1 . ) 
A single specimen preserved in alcohol. Colony branched, flabelliform, branches somewhat 
pinnate, slender. Axis horny, dark brown, flexible. Ccenenchvma thin, packed with large spindle- 
shaped spicules. Calicles verruciform, rather uniformly dis- 
tributed over surface. Height of colony about 90 mm. by 
about 40 mm. broad. Color dull grayish white. Spicules large, 
0.59 by 0.21 mm., 0.58 by 0.17 mm.; violet, 0.28 by 0.07 mm. 
Taken at station 6077, off Gallardo Bank, by tangle; 
depth, 111 fathoms; coral sand bottom. 
Eunicea rousseaui Milne-Edwards. 
Plate in, fig. 1 . 
A single specimen, incomplete. Colony somewhat arbor- 
escent, the branches tending to occupy a common plane. Entire 
colony heavy; the branches thick and somewhat club-shaped. 
Specimen about 200 mm. in height. Diameter of branches, 10 to 16 mm. Axis horny and rather 
massive, of a dark-brown color, almost black, and somewhat flattened in plane of colony. Calicles 
very prominent, the outer lip projecting into a horn-like hook, upper lip almost lacking. Coenen- 
chyma thick and densely packed with massive tubercular spicules, varying from 0.5 to 2.5 mm. in 
length by 0.2 to 0.6 mm. in diameter. Besides the larger ones of the ccenenchyma there are smaller, 
club-shaped ones lying just beneath the ectoderm and others of a pale purplish color about the axis. 
Plate hi, fig. 1, will afford a good general idea of the colony as a whole. 
Fig. F. — Spienles of Muricea flexuosa, x 55. 
Eunicea crassa Edwards & Haime. Plate ii. 
( Eunicea turgida Ehr.; Plexaura turgida Verrill.) 
Several specimens of this species were in the collection, all dry. The colony is large, somewhat 
dichotomously branched, the branches long, of fairly uniform diameter throughout, and tending to 
occupy a common plane. Height of colony from 300 to 500 mm. by about half as broad. Diameter 
of branches, 8 to 15 mm. Ccenenchyma thick, suberous, hard. Calices rather evenly distributed 
over entire surface, forming rather prominent oval cups with slightly raised border. Polyps retractile, 
the tentacles showing plainly within the calices. Spicules of some three distinct types: (1) Large, 
heavy, tuberculate spindles 1.34 to 1.8 mm. long; (2) smaller spinose spindles 1 mm. long; (3) very 
small purplish, and white, tubercular spindles, 0. 1 to 0. 13 mm. long. 
This species would seem to be identical with Verrill’ s Plexaura turgida, but in its general aspects 
and the character of its spicules it seems distinctively Eunicean, and I have so designated it. 
Plate ii, figs. 1-9, will afford a good general impression of the character of colony and spicules. 
Eunicea lugubris Duch. & Mich. Plate ii. 
A single specimen from Mayaguez Harbor. The colony is arborescent, arising from a single mas- 
sive base and short, thick stem; but the latter soon becomes lost in its numerous branches, which form 
a dense cluster resembling somewhat a madrepore coral. Entire colony about 400 mm. in height; 
color dark brown or nearly black. Diameter of stem at base 22 mm.; branches 5 to 8 mm., including 
the elongated calicles. Axis black, horny, very hard and tough. Ccenenchyma thick, suberous, and 
somewhat friable. Plate ii, fig. 10, gives a general impression of the appearance of the colony. 
Eunicea laxispina Milne-Edwards. Fig. G. 
(Gorc/onia laxispica Lamk.; Eunicea mammosa Lamx.; Gorgonia papillosa Dana.) 
A single specimen, somewhat imperfect. Colony sparingly branched, rising from a calcareous 
base. Height of colony about 150 mm. Calicles very prominent and scattered rather sparsely over 
the surface, the larger having a length of about 4 mm. by 2 mm. in diameter. Diameter of main stem 
