306 Part III. — Twentieth Annual Report 



line 10 miles. (South end) Orel of Caithness bearing N.W. \ N., 

 distant 15 1 miles. 



Station XVI. e tends in a straight line from N. h E. to S. | W. (l!^orth 

 end) Scarabein Mountain bearing N.W., distant from coast line 

 24^ miles. (South end) Ord of Caithness bearing N.W. \ N"., distant 

 28| miles. 



HOLOTHUEIOIDEA. 



Dbndrochirot^. 



Cucumaria. 



Cucumaria frondosa. Gunner us. 



1892. Cucumaria frondof^a, Bell, Brit. Mus. Cat., pp. 39, 40, 

 pi iv., fig. 2. 



Cucumaria frondosa is the most common Holothurian in the Moray 

 and Cromarty Firths. I have taken it at twelve of the sixteen special 

 stations in from 6 to 41 fathoms, often exceeding a foot in length, and 

 four inches or more in diameter. It is well distributed over the whole of 

 both areas, and was found in considerable numbers at Stations III., XI., 

 and XIV. 



The bathymetrical range of this species extends in the British seas, so 

 far as is known, from 6 to 70 fathoms, but it is a widely distributed 

 form, and has been obtained ofT the Florida Reefs and the coasts of Cali- 

 fornia in from .3 to 220 fathoms. 



Cucumaria fu,cic()la, Forbes and Goodsir. 



1892. Cuciwiaria fui'irola, Bell, Brit. Mus. Cat., p. 40. 



Two specimens of this doubtful species were obtained by me in the 

 Cromarty Firth by shrimp trawl, between luvergordon and Alness Point, 

 in 7 3 fathoms, adhering to the roots and stems of Laminari<e. This 

 species has been regarded ])y some authors as the young of Cucumaria 

 frondosa. One of the two specimens obtained by me was found on 

 dissection to correspond with the diagnosis given by Mr. F. Jeffrey Bell 

 in his catalogue of the British Echinoderms. The type specimens were 

 found not uncommon in Bressay Sound, Shetland, in 7 fathoms, also 

 adhering to the stems oi Laminario'. 



The bathymetrical range of Cucumaria fucicola is not definitely known. 



This species has been found in tlie stomach of the following fish : — 

 Haddock, Plaice, Lemon-sole, and Gomnton dab. 



Cucumaria lactea, Forbes and Goodsir (Diib. and Kor.). 



1892. Cucumaria lactea, Bell, Brit. Mus. Cat., pp. 38, 39, 



pi. iii., fig. 2. 

 1897. Cucuinaria lactea, Pearcey, F.B. for Scot. Kept., No. 15, 



p. 58. 



Cucumaria lactea has been obtained at two stations only, viz. III. and 

 VIII. It appears to be a rare form in the Moray Firth, but its small 

 size (^ to 1 inch in length) may be the cause of its having been over- 



