FROM THE EDDYSTONE GROUNDS TO START POINT. 489 



Galathea dispersa was taken on all the grounds and almost in every 

 haul. It was most rarely found on the clean shell gravel grounds, 

 viz., Ground XA^L, west of the Eddystone, and the Bolt Head Shell 

 Gravel Ground (XVII.). It was most abundant where hydroids were 

 numerous. 



Distribution. Geographical. Norman (No. 93) gives South and West Norway, 

 British Seas, and Mediterranean. Mihie-Edwards and Bouvier (No. 80) found it 

 commonly in the Bay of Biscay. 



Depth. 5-140 fathoms (Milne-Edwards and Bouvier). 



Bottom-deposit. The S3-n()nymy of the species is too doubtful to permit of a detailed list 

 of references. Milne-Edwards and Bouvier took the species upon all kinds of ground in 

 the Bay of Biscay. 



Stenorhynchiis longirostris. Chart XL This species is most plentiful 

 on Grounds IV., TIL, and V., where the bottom-deposit is fine sand (see 

 Table A^I.). It is less common on the still finer sands (Grounds I. and 

 IL). It is present, though not numerous, on all the gravels west of the 

 Eddystone with the exception of the clean shell gravel immediately 

 adjoining the rocks (Ground XVI.). It is scarce on the Bolt Head Shell 

 Gravel and on the Prawle Stony Grounds (XVII. and XVIII.). 



The species is scarce or absent on those grounds on which branched 

 hydroids of more or less luxuriant growth are scarce or absent respec- 

 tively. It appears to be specially abundant where the prevailing 

 hydroid is SertuJarella Gayi {e.g., Grounds III., IV., and V.), less 

 abundant where Haleciiim halccinum is the most characteristic repre- 

 sentative of the group, as on the West Eddystone gravels. My notes 

 are, however, not sufficiently' full to establish this connection in detail 

 for all the hauls. 



Habits. The habit of this species of decking itself with bits of 

 hydroids and polyzoa for the sake of protection is well known. When 

 placed in a small aquarium with pieces of hydroid it will generally be 

 found clinging to the hydroid. Whether or not it spends most of its 

 time in a similar position in its natural haunts, or whether it is gener- 

 ally travelling about on the intervening patches of sand, I am not able 

 to say, though from what I have seen of its habits in confinement I 

 incline to the former view. 



Dlstribution. Geographical. Stenorhynchus longirostris has a distinctly soutliern 

 distril)ution. It occurs in the Mediterranean (Marion, No. 74 ; Gourrct, No. 31 ; Norman, 

 No. 93), Canaries and Portugal {fide Gourret), north coast of Spain (A. Milne-Edwards 

 and Bouvier, No. 80), west coast of France (ditto and Bonnier, No. 10), north coast of 

 France, Belgian Coast (fide Metzger, No. 78), south coast of Devon and Cornwall, Irish 

 Sea (scarce, A. 0. Walker), Clyde (lloyle. No. 53). The Pommernnia took it once in the 

 North Sea (south-east of Yarmouth), and it is not recorded from Norway nor from tlie 

 Kattegat. Bell (No. 9) states that Embleton includes it in his list of Crustacea from 

 Berwickshire and North Durham. It is not recorded in Firth of Forth by Leslie and 

 Herdman (No. 43). 



Depth. From 10 fathoms (Gourret) and 15 fathoms (A. 0. Walker, No. 40, Vol. IX., 

 p. 33) to 230 i&thoms {Travailleur, No. 80, p. 5, footnote). 



