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Part III. — Eighth Annual Report 
almost equalling the diameter of the adult umbrella. From the free 
extremity of the bud a pair of similar tentacles with enlarged bases sprang. 
Grape-like masses occurred at the same part, and apparently the enlarged 
bases of two shorter tentacles. The other three carmine points were devoid 
of tentacles in the specimens, so that at first sight they had some resem- 
blance to Stee?istrupia, though they probably approach Hybocodon of 
Agassiz, the " hunchback " Medusa of North America, and perhaps the 
Diplonema of Green. The manubrium of the parent is large, and with a 
trumpet-shaped tip. In one it contained the remains of a copepod. A. 
Agassiz figures a Tubularian as the hydroid stock of his Hybocodon. The 
relationships of the Medusoid from St Andrews are at present unknown. 
Tiara octona (Oceania orfona, Fleming). 
Mid-Water-NeL 
First appearance. — 30th March, young. 
Last appearance. — 28th September, 1, unripe. 
Most plentiful. — From 22nd August to 28th September of very frequent 
occurrence; ripe forms procured on 27th August and 10th 
September. 
This form was first found by Dr Fleming, near the Bell Rock; again by 
Forbes and H. Goodsir in the Firth of Forth, and by the former off the Coast 
of Shetland. It is also not uncommon in the Outer Hebrides, such as near 
Lochmaddy, in August. 
Oceania c/lobidosa, Forbes. 
Mid- Water-Net. 
A very few specimens were procured on 22nd, 29th, and 30th of August, 
and on 3rd September. 
Forbes found it in the Sound of Bressay, and says it'somewhat approaches 
Turris in external appearance. 
Oceania turrita, Forbes. 
First appearance. — 7th August (bottom-tow-net), off Boarhills. 
Last appearance. — 8th August (mid-water-net), off Fife Ness. 
Margelis ramosa^ Agassiz (Bougainvillia britannica ) Forbes). 
Mid-Water-Net. 
First appearance. — 8th March, very small. 
Last appearance. — 26th September, small, unripe. 
Most plentiful. — In June and September, when a few, as a rule, were 
procured each time. Not quite mature during the latter half of 
May, but ripe in September (although small and unripe were 
found on 26th of the same month). This species did not occur 
very frequently. * 
Bottom and Surface-Tow-Nets. 
On 8th August, at Fife Ness, this form was procured in the bottom 
tow-net, and in St Andrews Bay on 12th September, in the surface-tow-net. 
Thamnitis nigritetta (Bougainvillia nigritella, Forbes). 
Mid- Water-Net. 
First appearance. — 29th August young in St Andrews Bay, 11th 
August, E.S.E. of Isle of May. 
Last appearance. — 18th September. 
On the above dates only did this form occur. 
* Though it is not uncommon. 
