298 Prof. M'Intosh's Notes from the 



Bougainvillia britannica, Forbes (Margelis ramosa, Agassiz). 



A single example appeared in the midwater-net in March ; 

 in May only once, in small numbers. It occurred almost 

 daily in June in the midwater-net, and of variable size. None 

 were quite ripe. A single large immature specimen was cap- 

 tured in July ; and it was comparatively scarce in August, 

 though towards the end of the month it was ripe. Many 

 small examples frequented the open water beyond the bay. 

 Throughout September it occurred in small numbers, and 

 many were ripe. 



It is common round the British shores. Prof. Allman* 

 observes that the gonosome is developed in autumn. Lo 

 Bianco t states, on the authority of Du Plessis, that this 

 Hydromedusa appears in winter and spring in the Bay of 

 Naples. 



The polyparies are found off St. Andrews Bay and the 

 neighbourhood of the Forth. 



Bougainvillia nigritella, Forbes. 



Small specimens were captured in the bottom-net in April 

 and comparatively large examples in the midwater-net in 

 August. Ripe forms occurred once or twice in September. 

 Forbes found it in Bressay Sound, Shetland, in the autumn 

 of 1845. 



Lizzia octopunctata, Sars, was first captured in the bottom- 

 net in March, in the midwater-net in April, when the speci- 

 mens also had buds, and only once in May. One or two 

 examples were obtained during the first half of June. In 

 August again it appeared in the surface-net. 



It seems to be most frequently procured in early spring, and 

 is generally distributed along the eastern coast. Forbes , 

 found it on both sides of Shetland. It is not an abundant 

 form in the bay, and it ranges from y 1 ^ to jV inch in diameter. 



L. octopunctata is an active and voracious form, engulfing 

 the bodies of Appendicularia?, while the tails project as 

 singular appendages to the Medusa, and the same happens to 

 small Sagittee, the end being fixed in the manubrium, and 

 sometimes the umbrella is everted. 



At Naples L. Kollikeri, Gegenb., is ripe in March. 



Lizzia blondina, Forbes. 



Procured on the ground near the Bell Rock in August. 

 It was formerly obtained by Forbes in the Zetlandic seas. 

 * ' Gynmoblastic or Tubul. Hydroids,' p. 312. 

 t Mittb. Z. Stat. Neapel, 8 Bd. p. 385 (1888). 



