192 ON THE PELA.GIC FAUNA OF TLYMOUTH FOR SEPTEMBER, 1897. 



Noctiluca miliaris. — Specimens were first taken on 7th of September, 

 about four miles outside the Breakwater. It was abundant on the 

 8th, three miles S.W. of the Mewstone, and on the 10th, five miles 

 East of the Eddystone. Tow-nettings taken close to the Mew- 

 stone on the 13th did not contain any specimens. On the 15th, 

 specimens were first taken inside the Breakwater. From the 

 15th to the end of the month, Noctiluca was usually present in the 

 tow-nets. The quantity varied considerably, but it was more 

 abundant outside than inside the Breakwater. 



Cydippc. — One or two specimens were usually found in the tow-nets. 

 They all belonged to very early stages, about 2 to 3 mm. in 

 diameter. 



Magelona. — The larval stages of this worm were fairly common through- 

 out the month. 



Chcctopterus. — Five larval stages were taken on the 7th of September, 

 four miles south of the Breakwater, and single specimens on the 

 13th, 21st, and 30th. Only once taken inside the Breakwater. 



Tcrcbella. — The larval stage, living in a little tube, was fairly common 

 until the 8th September, but very scarce during the latter half of 

 the month. Only four specimens taken after the 19th. 



Tovioptcris onisciformis. — Only four specimens seen. Three taken 

 outside and one inside the Breakwater. About 3 mm. in 

 length. 



Actinotrocha. — Single specimens taken on the 10th, 15th, 18th, 28th, 

 and 30th of September. Only once taken inside the Break- 

 water. 



Tornaria. — Single specimens taken on the 10th and 15th of September, 

 off the Eddvstone. 



