of the Fishery Board for Scotland. 265 



frequent in the tow-net collections. The two dorsal cusps appear to be 

 stronger in the male than in the female. The telson is of the form of 

 narrow triangular plate with a pointed extremity, and furnished with a 

 minute hair on each side of the apex. 



ANNELIDA. 



Family Nemertid^e. 



Genus Cerebratulus. 



Cerebratulus angidatus (0. F. Miiller). 



1853. Gordius fragilis, Sir John Dalyell (15), vol. ii. p. 55, pis. vi., 



vii., vii*. 

 1874. Cerebratulus angulatus, W. C. M'lntosh (22), p. 175. 

 1894. Cerebratulus angulatus, T. Scott, Ann. and Mag. Scot. Nat. 

 Hist., Part 10, p. 118. 



A specimen of Cerebratulus angulatus, measuring about 14 inches in 

 length, was obtained among some trawl refuse from Largo Bay (off the 

 Wemyss). I cannot find any previous record of Cerebratulus having 

 been taken in the Forth. Harry Goodsir and Sir John Dalzell publish 

 records of this species for Scotland, but do not give the localities. 



MOLLUSC A. 



■ 



CONCHIFERA. 



Family Pandoridj:. 



Genus Lyonsia, Turton. 



Lyonsia norvegica (Chemnitz). 



1865. Lyonsia norvegica, J. G. Jeffreys (19), vol. iii. p. 29 (vol. v. 

 p. 190, pi. xlviii. fig. 2.) 



Habitat. — Vicinity of the Bass Rock ; depth of water 22-23 fathoms. 

 Bottom, sandy mud. A living specimen of this mollusc was taken a 

 short distance north-east of the Bass Rock on 30th October 1893. There 

 does not appear to have been hitherto any very satisfactory record of the 

 occurrence of Lyonsia in the Firth of Forth. There is no record of its 

 occurrence iu the Forth, either by the Rev. W. Wood (East Neuk of Fife), 

 or by Leslie and Herdman (Invertebrate Fauna of the Firth of Forth). 

 Dr Henderson, in his notes on the Forth Invertebrates, in the Proceedings 

 of the Royal Physical Society of Edinburgh (1883-84), records the 

 discovery of ' a single broken valve at Newhaven' ; but he states distinctly 

 that ' in all cases where " Newhaven " is given as the locality, it must be 

 ' understood that the specimens are from the fishermen's lines, and probably 

 ' taken to the east of the May Island.' The present is therefore the only 

 satisfactory record I know of for Lyonsia norvegica as a member of the 

 Forth fauna. 



The following is a list of some of the works more particularly referred to 

 in this contribution towards a Natural History of the Firth of Forth : — 



1. 18837 Aurivillius, C. W. S., Bidrag till Kdnnedomen om Krusta- 

 ceer, som lefva hos Mollusker och Tunikater ; Akademisk 

 A/handling. 



