Gamble — Fauna and Flora of Valencia Harbour, Ireland. 747 



'* olfactory organ" could not be demonstrated; but the ventral 

 ganglion agreed in comparative size and position witb Steinhaus' 

 figure. The reproductive organs were not fully developed. 



If tbis determination bei correct, the range of S. furcata is 

 considerably extended. Steinhaus describes it as being a fairly 

 constant and occasionally abundant element of the plankton 

 collected in tbe Equatorial Current, where it was obtained by 

 the use of a net drawn to the. surface from a depth of 400 

 metres. Two other localities, both in the Sargasso Sea, are 

 recorded for 8. furcata; but further north the species dis- 

 appeared. Hence its occurrence in the west of Ireland is a 

 considerable extension of its previously known range. 



Spadella ceplialoptera, Busch. 



This species was occasionally taken when the tow-net was 

 used close to the bottom, especially amongst rocks covered with 

 sea-weed. 



One specimen taken with a crimson alimentary canal. 



Eefeee^tces. 



M-Intosh, W. C— 1890. Ann. Nat. Hist., ser. 6, vol. vi., p. 174-182. 



Steinhatts, 0. — 1896. Die Verbreitung der Chsetognathen im Sud- 

 atlantischen und Indischen Ocean. Inaug. Dissert. (Kiel). 



STRODTMAJSTjf.— 1892. Die Systematik der Chsetognathen. Ai'ch. f. 

 Naturg., Bd. i., Heft. 3. 



R.I. A.. PROC, SER. III., VOL. V. 3 p 



