ANTHOMKDUS.K mTHOTIAKA. 



185 



ing upon the tube of Sabella. The sterile feeding-polypites arc fusifoim and have lint 2 ten- 

 tacles, which arise from one side of the body. The reproductive polypites, or lilastostyles, are 

 mouthless and cylindrical in shape. Their free distal end terminates in a knob-like cluster of 

 nematocysts. Several medusa-buds arise in a cluster from the side of the blastostyle. The 

 medusae become free and develop into It'illsin st,-ll<itii of Forbes, 1848 (p. 19, plate i, fig. i). 



Tribe BYTHOTIARIDI. 

 Genus BYTHOTIARA Gunther, 1903. 



Bvrhotiiira, Gi'NTHER, 1903, Annals and Mag.Nat.Hist.| Ger. 7, vol. II, p-424. MAAS, 1905, C'r.i:-pedoten MrJu m ,li r .s/'/ot;.; 

 Eiped., Monog. 10, p. 18. 



The type species is Bythoti/iru murrn\t Gunther, from a depth of 1,610 fathoms, off the 

 southwest coast of Ireland. 



GENERIC CHARACTERS. 



With 4 (to 5 ?) radial-canals some or all of which bifurcate so that S (to 10 ?) canals reach 

 the circular vessel at the margin. Tentacles at the extremities of the terminal branches of the 

 radial-canals. 4 mterradial gonads, in the form of swollen ridges on the sides of the stomach. 

 4 (or 5 ?) simple lips. No longitudinal nematocyst tracts upon the exumbrella. 



Bythotiara murrayi Gunther. 



R\tholiara murrayi, GiJNTHfR, 1903, Annals anil Mag. Nat. Hist., ser. 7, vol. 11, p. 424, plate 10, figs. 4. c. 



Medusa 7 mm. in diameter. 8 long tentacles at the bases of the 8 terminal branches nt 

 the radial-canals. 4 radial-canals which bifurcate close to the manubrium, giving 8 terminal 





97- 



FHV. 97. B\tholiara murra\i. After Gunther, Annals ami Mag. Nat. Hist. 



FIG. 98. Bvlltoliara murrayi. A. Side view. fl. Aboral view of manubrium. From .1 specimen in the 

 Puritan collection, No. 46, 1902; at the Stazione Zoologies, Naples. Drawn by the author. 



branches. 4 lips. Gonads in 4 ridges along the interradial angles of the stomach. Color ( ? 

 A single specimen from a depth of 1,610 fathoms in N. lat. 52 18.1', W. long. 15 53.9', off 

 the southwest coast of Ireland. Dr. Lohianco of the Naples Station kindly permitted me to 

 study a specimen of this, or a closely allied medusa which was obtained by the Krupp yacht 

 Puritan from a depth of 1,000 fathoms near Capri, Bay of Naples, and is now preserved in 

 alcohol at the Naples Zoological Station (fig. 98). The bell is dome-shaped, 12 mm. high and 

 14 mm. wide and flattened laterally. The hell-margin is destroyed. 5 primary radial-canals 

 arise from the stomach and 4 of these bifurcate, the other canal being simple. Thus 9 canals 

 extend to the periphery of the bell. The stomach is 2.5 mm. long and there are 5 inter- 



