MEDUSAE. I. 



97 



particular difference; unfortunately the state of preservation does not allow a determination of the 

 number of concretions in the marginal vesicles. 



Material (see Chart XII): 



1) Myri Bugt, south coast of Iceland. July 2jth 1904. ''Beskytteren", Gemzoe. -- 2 speci- 

 mens, 3738 mm wide. 



2) -- Lat. 63i8' N., Long. 2i3o' W., South-Iceland. July 8th 1904. Depth 178 m. "Thor" stat 

 176(04). - 3 specimens, 2228 35 mm wide. 



3) -- Lat. 64o6' N., Long. 23i4' W., Faxebugt. July 2nd 1908. Depth 98 m. Young-fish trawl, 

 65 m wire. "Thor" stat. 45 (08). i specimen, 21 mm wide. 



4) -- Lat. 6623' N., Long. 2i2i' W., North-Iceland. August 24th 1904. Depth io8m. Young-fish 

 trawl, 70 m wire. "Thor" stat. 266(04). i specimen, 32 mm wide. 



5) -- Lat. 6435' N., Long. n45' W., east of Iceland. August 8th 1904. Depth 348m. "Thor" 

 stat. 241 (04). 2 large specimens, about 40 mm wide. 



Table XIII. Diameter, number of tentacles, and length of gonads in 

 Phialidium islandicum from Iceland. 



The specimens from loc. No. 5 are very large, about 40 mm wide; both specimens have lost 

 the gastro-genital organs, but these are regenerating; in one specimen three new stomachs are devel- 

 oping; a nematode is enclosed in the gelatinous substance near the three stomachs. 



As will appear from the above list of the material, this species has been found both south, 

 west, north, and east of Iceland; it is probable, therefore, that it is derived from a hydroid widely 

 distributed at the coasts of Iceland (possibly Campamilarta volubilis!}. The specimens have all been 

 found in July or August. 



Genus Eucheilota Me Crady. 

 Eucheilota maculata Hartlaub. 



Mayer 1910, Medusae of the World, p. 285. 



Bell somewhat flatter than a hemisphere, about ismni vide. Gelatinous substance thick above, but thin at the sides 

 of the bell. Stomach short, with 4 well-developed lips. 4 linear gonads along the outer two-thirds of the 4 radial canals, not 

 touching the circular vessel. 1630 long tentacles with well-developed, tapering basal bulbs, flanked by cirri. Cirri also arise 

 from the bell-margin between the tentacles. Marginal vesicles, each containing 510 concretions, alternating with the tentacles. 

 Gonads and tentacular bulbs light reddish-brown; on each interradial wall of the stomach there is a large black spot. 



The species occurs in the North-Sea, whence it is occasionally carried into the Kattegat. 



Tlie Ingolf-Expedition. V. 8. 13 



