132 BULLETIN OF THE 



cal projection. Corbuloe closed, with long peduncles, which are jointed and 

 bear hytlrothec£e, one on each joint. 

 Mitrtinii^ue, 96 fms. 



Aglaophenia minuta, n. s. 



Trophosome : — Hydrocaulus one quarter to half an inch high, pinnately 

 branched, not fascicled. Pinna3 alternate, with hydrotheca3 closely crowded 

 together. Hydrotheca3 short, stout, and with dentate margin. Intrathecal 

 ridge well marked. Supracalycine nematophores small. Mesial nematophore 

 adnata to hydrotheca about half the depth of this organ. • 



Gonosome unknown. 



Found in great abundance on an Alga over the fronds of which the hydrorhiza 

 extends. 



32° 43' 25" N., 77° 20' 30" W., 233 fms. 



Aglaophenia crenata, n. s. 



A. crenata differs from other members of the genus in having the margin of 

 the hydrotheca almost smooth and crenate. In other respects it resembles 

 A. gracilis. 



Gonosome unknown. 



41° 24' 45" N., 65° 35' 30" W., 1242 fms. 



Aglaophenia robusta, n. s. 



This species has a very large, thick, fascicled hydrosome, which is branching, 

 and gives rise to alternate pinnse. Hydrothecse with very long teeth on the 

 margin. Mesial nematophore large, adnate, almost as long as the hydrotheca 

 is deep. Supracalycine nematophores rising slightly above the rim of the 

 hydrotheca. Color of hydrosome bright yellow and brown. 



Gonosome unknown. 



Montserrat, 88 fms. 



AGLAOPHENOPSIS, n. g. 



Generic Characters. — This genus has many resemblances to Kirchenpaur's 

 subgenus Macrorhynchia and to Allinan's Halicornaria. Unlike the former, 

 the pinnae retain their normal form, and do not bear gonophores. 



In Afjlaophenopsis the mesial nematophore most proximally situated on the 

 pinna is modified into a long, jointed stalk, which bears nematophores, and 

 seems to protect gonangia, which arise from the stem below. In Halicornaria, 

 as limited by Allnian, there arc similar jointi'd ajiiiendages, but they are not 

 confined to the proximal hydrotheca. The two genera are easily distinguished. 

 In CladocarpxL8 similar unjointed appendages are found, but these structures in 

 this genus, called phylactogonia, are branched, antler-shaped. 



