ANTHOMEDUS.fi SARSIA. 



61 



the bell-height, and covered with alternately arranged, wart-like clusters of nematocysts. A 

 small ocellus is situated on the outer surface of each tentacle-bulb near the bell-margin. There 

 are also 2 globular swellings, one on either side of each tentacle-bulb adjacent to bell-margin. 

 The velum is narrow. There are 4 narrow, ragged-edged radial-canals and a slender circular 

 canal. A short axial canal extends upward from the stomach-cavity into the gelatinous 

 substance of the apical projection of the bell. The manubrium is long and cylindrical, and 

 extends for about one-third of its length beyond the velar opening. The mouth is a simple 

 opening without prominent lips. A single, short, tubular gonad is developed upon the sides 

 of the manubrium. The manubrium, gonads, and tentacle-bulbs are purple. The ocelli 

 are black. 



This species is found off the coasts of Greenland and Spitzbergen, where it appears to 

 be common. Gronberg, 1898, found it to be abundant at Spitzbergen, and Linko, 1905, 

 found it to be common in Barents Sea, north of Lapland, Russia. It is the largest known 

 Sarsia. Gronberg's description is based upon the study of living medusae. Hartlaub also 

 gives an excellent figure of the medusa, which we reproduce. 



FIG. 23. Sarsia prolifera, from life, by the author. Mouse- 

 hole, Cornwall, England, Nov. 8, 1907. 

 FIG. 24. Sarsia codonophora, after Haeckcl, 1879. 



Sarsia prolifera Forbes. 



Sarsia proliftra, FORBES, 1848, British Naked-eyed Mi-ilus.r, p. 59, plate 7, fig. 3. BUSCH, 1851, Beobacht. wirbeilos. Seeth., 

 p. i, taf. i, figs. 1-6. BEDOT, 1905, Revue Suisse de Zool., tome 13, p. 147 (all literature to 1850). HARTLAUB, 1907, 

 Nordisches Plankton, Nr. 12, p. 15, figs. 7, 8. 



Syncorync prolifera, ALLMAN, 1871, Monog. Tubularian Hydroids, p. 83, fig. 38. 



Codonium codonophorum+ Sarsia prolifer, HAECKEL, 1879, Syst. der Medusen, pp. 14, 18, taf. I, fig. 3. 



Sarsia codonophora, HAECKEL, 1880, Ibid., p. 655. 



