St. Andrews Marine Laboratory. 299 



Sarsia tubulosa (Sars), Lesson. 



This species made its appearance towards the end of April, 

 and a few attained half an inch in diameter. Throughout 

 May and June it occurred in the midwater-net almost daily 

 and of variable size, though many were small. All were 

 immature. At the commencement of July all were in the 

 latter condition, and small, but they became larger as the 

 month advanced, comparatively few, however, being obtained 

 at any given time. 



In the Ann. & Mag. Nat. Hist, for August 1887 the 

 Hydroids which were reared from planulaj of Sarsia are men- 

 tioned, the species being Syncoryne decipiens, Dujardin. As 

 this Hydroid is not common in the Bay of St. Andrews, these 

 Medusoids probably were carried by currents from the estuary 

 of the Forth and the neighbourhood ; yet they were in great 

 numbers, penetrating all the nooks of the bay, and passing 

 far up the estuary of the Eden. 



Forbes chiefly found this form in June and July off the 

 coasts of Ireland and Shetland. It is very generally dis- 

 tributed, however, along the eastern shores and probably also 

 on the western. 



Sarsia (Codonium) pulchella, Forbes, 



Obtained in May. It has a greenish tinge at the oral 

 extremity. The relations of this form require elucidation. 



Syncoryne eximia, Allman. 

 The gonozooid of this form was captured in May, 



Stauridium jyrod actum, S. Wright. 



Gonozooids procured in June and July. Lo Bianco gives 

 October as the month for them at Naples. 



Besides the foregoing, a gonozooid of Podocoryne carnea, 

 Sars, occurred in July. Lo Bianco thinks this species at 

 Naples sends off buds throughout the year. 



Thanmantias pilosella, Forbes (Laodice cruciata, Agassiz), 

 was captured sparingly in April and May, increasing in size 

 as the latter month advanced, small specimens being most 

 common in the former and the beginning of the latter month, 

 In June swarms occurred in the midwater-net almost every 

 day, and the individuals as a rule w ere somewhat larger than 

 in the previous month, though not quite mature. They were 



22* 



