1903.] MEDUSJ5 FROM BRITISH COLUMBIA AXD ALASKA. 179 



separation is justifiable, seeing that Brandt seems to have mis- 

 understood the structure of his species. We should hesitate, 

 therefore, to base any distinctions on his account. 



III. EucoPiBiE Gegenbaur. 

 Phialidium Leuckart. 



1. Phialidium languidum Haeckel (18, p. 185), 

 Synonym Oceania languida A. Agassiz. 



S'peGific description. — Tlie bell is hemispherical, about 12 mm, 

 in diameter by 6 mm. high. It is folded in the peculiar manner 

 described by Agassiz (2). 



The velum is naixow and delicate. The tentacles all told 

 number sixty, some closely coiled, others straight. The tentacle- 

 bulbs are somewhat smaller here than in P. gregaria, the tentacles 

 being shai'ply set off from the bulbs. There ai-e two otocysts 

 between each two tentacles. 



The stomach is small and cross-shaped, the arms of the cross 

 receiving the radial canals. There is no proboscis. The curled 

 and frmged oi-al lobes are about the same length as the arms of 

 the stomach cross. The four radial canals bear the gonads on 

 their distal half. They are oblong linear bodies, one-third the 

 length of the radial canals, attached to their outer half, but not 

 reaching quite to the cii-cular canal of the bell-margin. 



Colour. — Greenish blue. 



Habitat. — Victoria Harboiu", collected by Shearer. 



2. Phialidium gregarium Haeckel (18, p. 188). (Plate XX. 

 figs. 1 &L \ a.) 



Synonym Oceania gr eg aria A. Agassiz. 



SpecifiG description. — The bell is 12 mm. by 7 mm., and so 

 nearly hemispherical. The velum is quite small. Of the tentacles 

 and buds destined to develop thei-e are sixty. The tentacle-bull s 

 are spherical and relatively large. The otocysts are evenly dis- 

 tributed, one or two between consecutive tentacles ; they usually 

 contain one, sometimes two otoliths. 



The stomach is very small, quadrangular, receiving the delicate 

 radial canals at its angles, and ending in the four peri'adial, 

 moderately long, curled, and fringed oral lobes. There is no 

 proboscis. The four radial canals run from the angles of the 

 stomach to the circular canal, beaiing on their distal half or third 

 the gonads, which, however, do not I'each quite to the cii'cular 

 canal. As the gonads are very narrow linear bodies, our speci- 

 mens may be immature. This is borne out by the size and 

 number of small tentacles. , 



Colour. — White, becoming slightly brown on preservation in 

 formalin. 



12* 



