63 



Larval Molluscs were found in every month. In May they 

 were few in number, but increased in June, reaching their maximum 

 in July and August ; in September there was a slight decrease in 

 numbers, followed by a slight increase in October. Lamellibranch 

 larvaa were more abundant than Gasteropod larvae, the latter in 

 June being taken in very small numbers, and then only in one catch. 



Larval Decapods were never taken in any great numbers, 

 except in August at station 7, where Brachyura megalopas were 

 common. They were absent in May, and in June found only in the 

 catches from the northern part of the district. In July and August 

 they were most abundant, few in numbers in September, whilst in 

 October there was a slight increase. 



Barnacle larvae occurred every month, but were most abundant 

 in May when the Cypris stage as well as the Xauplius was taken in 

 fairly large numbers at the stations in the northern part of the 

 district. 



Polychaet larvae were present every month, but never in any 

 number, except in June and July at stations 3 and 1 respectively. 

 Poly bos trichus, the bud of Autolytus, was found in June to be 

 fairly common in the southern part of the district, and in September 

 and October it occurred in the samples from the northern stations. 

 In August and September pelagic polychaets, free swimming stages 

 of Syllids, were obtained. 



Larval Polyzoa (Cyphonautes) were taken every month. 



Medusoicls occurred in October in greatest numbers. 



There were also in the catches some forms which could not be 

 determined in the preserved condition. Some of them are probably 

 the cysts of Periclinium, others are comparable with the Ovum his- 

 piduni of Cleve, the " Barbierbeckenstatoblast " and Umrindete 

 cyst of Hensen. 



