V 
MUSEUM OF COMPARATIVE ZOOLOGY. 133 
Minor characteristics of the genus are that the pinnæ are very numerous, and 
always arise from one side of the hydrocaulus. The hydrothecæ have short, 
adnate, mesial nematophores, and the gonosomes have a single opening turned 
to one side, 
Aglaophenopsis hirsuta, n. s. 
Trophosome : — Hydrocaulus branching, fascicled, about two inches high, 
with branches wide spreading. The base of the trophosome with many root- 
like appendages, Pinnæ small, arising from the side of the stem, and branches. 
The small size of the pinnæ and their great numbers impart a hirsute appear- 
ance to the hydrocaulus. Pinna jointed, each joint bearing a single hydro- 
theca. Hydrothecw closely crowded together. Margin of hydrotheca notched. 
Supracalycine nematophore rises slightly above tho margin of the hydrotheca. 
Mesial nematophore adnate to the hydrotheca about one third the depth of this 
organ. 
Gonosome:— The gonophores are flask-shaped, borne on the primary 
branches. The gonangia in alcoholic specimens fill about half the savity of 
the gonophore. Gonophores numerous, and never found on the main stem of 
the hydrosome. "They spring from the same side of the branch as the pinne, 
and are protected by jointed extensions of the most proximal mesial nemato- 
phore of the pinna. This structure bears a single row of nematophores, and 
resembles a phylactogonium. It differs from the phylactogonia of Cladocarpus 
in being unbranched and jointed, 
32° 7! N., 78? 37' 30" W., 229 fms. 
Antennopsis ramosa, n. s. 
Trophosome:— Hydrocaulus irregularly branching, fascicled, bearing den- 
ticulate nematophores not unlike those fonnd on one side of the stem of Olado- 
carpus. Height six to eight inches. Scattered pinne spring from the main 
stem, Ultimate ramuli arise irregularly from all sides of the branches as in 
A. hippuris, All. Hydrothece shallow. Nematophores free, long, trumpet- 
shaped. Margin of hydrotheca smooth. Mesial nematophores three in num- 
ber, the infracalycine affixed to a slight prominence at the.base of the hydrotheca. 
Mesial nematophore open along the inner side, and at the top. Supracalycine 
trumpet-shaped, extending above the orifice of the hydrotheca. Two trumpet- 
shaped nematophores on the projection of the branch from which the ultimate 
ramulus arises, 
The gonophores, like those of A. hippuris, are borne in the axils of the 
branches. Gonophores without cobula or phylactogonia, slipper-shaped, 
mounted upon a short peduncle. The single specimen in the collection 
showed gonangia of a variety of forms, and I was unable to distinguish male 
from female, as Allman has done in A. hippuris. The species differs from 
À. hippuris in the branching habit and the number of mesial nematophores. 
329 7/ N., 78? 37! 30" W., 929 fms. 
