88 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 91 



prominent median nematopliore. The hydrotheca, placed a considera- 

 ble distance from the distal end but still in the distal half, is nearly 

 equal in depth and breadth. In some instances, a secondary branch 

 or hydrocladium is given off in place of the hydrotheca in an internode 

 of the primary hydrocladium. There are no definite septal ridges in 

 stem or hydrocladia. 



There are two supracalycine nematophores, two mesial nematophores 

 on the proximal hydrocladial internode and three on each of the 

 others, two at the axil of the hydrocladium on the cauline internodal 

 process, and three (sometimes only two observed) on each of the cauline 

 internodes. 



Gonosome. — Not observed. 



Type.— U.S.N.M. No. 43459. Taken by the United States Fisheries 

 steamer FisUHamh at station 1092, latitude 39°58' N., longitude 69°42' 

 W., off Marthas Vineyard, 202 fathoms, August 11, 1882. Another 

 lot taken at FishEawJc station 1038, latitude 39°58' N., longitude 70°06' 

 W., off Marthas Vineyard, 130 fathoms, September 21, 1881. 



