MUSEUM OF COMPARATIVE ZOOLOGY. 133 



Minor characteristics of the genus are that the pinna) are very numerous, and 

 always arise i'rom one side of the hydrocaulus. The hydrotheca; 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. Pinna; small, arising from the side of the stem, and branches. 

 The small size of the pinna; and their great numbers impart a hirsute appear- 

 ance to the hydrocaulus. Pinnae jointed, each joint bearing a single hydro- 

 theca. Hydrothecse closely crowded together, ilargin 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 cavity 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 pinnae, 

 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 irregidarly branching, fascicled, bearing den- 

 ticulate nematophores not unlike those fonnd on one side of the stem of Clado- 

 carpus. Height six to eight inches. Scattered pinnae spring from the main 

 stem. Ultimate ramuli arise irregularly from all sides of the branches as in 

 A. hippuris, All. Hydrotlieca; 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 

 A. hippuris in the branching habit and the number of mesial nematophores. 



32° 7' N., 78° 37' 30" W., 229 fius. 



