k 262 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



loth, and soon after that drops to tens and even units, 

 with an occasional appearance (August 31st, 200) in 

 greater numbers. During most of September the group 

 is but scantily represented; although neither species is 

 ever absent for long, and occasional larger numbers occur 

 such as September 19th, oft' Calf Island, deep net, 

 Podon 70, and Kvadnc 100; and September 20th, Station 

 1, shear net, Podon 110 and 290, deep net 140; and, at 

 the same time, inside the bay, 182. On September 23rd 

 the ordinary surface net inside the bay took 550 Podon, 

 and the following day 100, after which the numbers fall 

 off rapidly. 



TOMOPTERIS. 



This pelagic worm occurs in our records occasionally 

 throughout April, and then again in August, September, 

 and onwards till the end of the year. It is not 

 represented on our Forms during January, February, 

 March, May, June and July ; but these are the months 

 when only weekly gatherings were made, and the question 

 arises whether, if as many hauls had been taken then as 

 in April and August, Tomopteris might not have been 

 found. 



Our first record of Tomopteris onisciformis, Esch., 

 in 1907, is one sjiecimen at Station II, in the weighted 

 net (10 fathoms), on April 1st. It is never very abundant, 

 being usually taken in ones and twos, and generally in 

 the deeper nets — the vertical, the weighted, or the shear. 

 This last net caught the largest numbers : it had 10 

 specimens on April 26th, 85 on September 19th, 95 and 

 05 on September 20th. The ordinary surface net inside 

 the bay got 25 on August 15th, and the following day, 

 and the weighted net had 14 on September 19th and 12 on 

 September 20th. From that time onwards to the end of 



