NEW HYDROIDS — FRASER 577 



Gonosome. — Gonangium oval or obovate, supported on short, an- 

 nulated pedicels, growing from the axils of the hydrothecal pedi- 

 cels. 



Type.—\JS:EM. No. 43435. Taken by the United States Fish- 

 eries steamer Fish Hawk., I14 miles from North Light, Block Island, 

 east of Long Island, N. Y., on Sargassum dredged in 13 fathoms, 

 August 24, 1880. 



This species was associated with Gem/maria costata^ Clytia cylin- 

 dnca., Ealeciwni hermudense., and Aglaophenia minuta, all, at times. 

 Gulf weed species. The Sm'gassum must have drifted north in the 

 Gulf Sti«am and then been sidetracked to sink in this location. 



Genus EGMUNDELLA Stechow 



EGMUNDELLA FASCICULATA, new species 



Plate 32, Figure 4 



TropJiosome. — Colonies strongly fascicled in the basal portion, 

 reaching a height of 35 mm. ; the terminal portion of the main stem 

 and of the branches simple; the simple portion may be short or 

 rather long, supporting several hydrothecae; stems, branches, and 

 pedicels smooth, or at the most slightly wavy, no distinct annula- 

 tions; the pedicels growing from the fascicled portion of the stem 

 are commonly longer than those from the simple stem or portion 

 of branch. 



Hydrotheca broadening gradually and slightly toward the distal 

 end ; operculum of rather few segments, 8 or at most 10. 



On the fascicled portion of the stem and on the pedicels arising 

 from that portion, there are numerous large nematophores, singly 

 or in groups of two or three ; none was observed on the simple por- 

 tion of the stem or branches. 



Gonosome. — Unknown. 



Type.—U.S.'^M. No. 43436. Taken by the United States Fish- 

 eries steamer Fish Hawk oif Marthas Vineyard, latitude 40°03' N., lon- 

 gitude T0°31' W., 100 fathoms, August 31, 1881. 



Genus STEGOPOMA Levinsen 



STEGOPOMA FASTIGIATA (Alder) 



PiiATE 33, Figure 5 

 Calycella fastigiata Alder, Ann. Mag. Nat. Hist., ser. 3, vol. 3, p. 73, 1860. 



TrophosoTYie. — Individual hydrothecae growing at irregular inter- 

 vals from a smooth, slender stolon, definitely pedicellate, straight, 

 almost tubular, but rather rapidly tapering to the pedicels; oper- 

 culum consisting of the regular two membranes meeting along a 

 ridge, with the walls of the hydrotheca produced to form a gable 

 to support the operculum. 



