Invertebrate Fauna of the Firth of Forth. 309 



distinguished from H. tenelhtmy which is 

 apparently its nearest ally, by several 

 characters constant in all my specimens. 

 The reproductive gonophores have not yet 

 been found. On Hydroids, taken up by 

 a " long line," 60 miles east of the May 

 Island. 

 Serhdarella tenella (Alder). 



Dredged to the east of Inchkeith, on other 

 Hydroids. I have several other specimens, 

 and believe this species to be not rare in 

 the Firth. 



VERMES. 



Tomopteris sp. {T. onisciformis, Eschscholtz ?). 



Off May Island in surface-net, November 

 20th ; off Inchkeith, November 29th. 



^ FilograTia implexa (Berk.). 



Large masses of tubes occasionally brought 

 in by the Newhaven fishermen. 

 Most of the Worms we have taken in the 

 Firth have not yet been identified. 



PYCNOGONIDA. 



Nymph on hirtum, Kroyer = ? N. hirtum, 0. Fab. 



A single specimen, half a mile west of 

 May Island, 20 fathoms ; in trawl, east of 

 Inchkeith. 



N. Irevirostre, Hodge. 



Occasionally at Newhaven. 



N. grossipes, O. Fab. 



Newhaven, not uncommon ; also dredged 

 in several parts of the Firth. 

 In addition to these Pycnogonids, we have 

 at least two other species, which I have 

 not yet been able to identify. 



^ I find that this species, though omitted in Messrs Leslie and Herdnian's 

 list, was recorded from the Firth of Forth, by Mr W. S. Young, in Proc. 

 Hoy. Phys. Soc, 1862. 



