230 J. H. ORTON. 



were taken in one haul of the dredge in the middle of Plymouth Sound, 

 while on the date 23rd March, 1911, one specimen was obtained similarly 

 in the same locality. Many unsuccessful hauls have, however, also been 

 made. 



Off Eame Head 6 specimens were taken in the dredge in mud about 

 1 mile south of the headland. Five of these specimens were taken in one 

 haul of about five minutes' duration. 



From the region of the Mewstone " Amphioxus " Ground, between 

 and about the points 1| to 2 miles south of the Mewstone and Yealm 

 Point, captures of C. elo7igata were made in the dredge on seven different 

 occasions. On the 3rd June, 1912, 12 specimens were obtained in about 

 half a day's work with the fine-meshed dredge. In all, about 20 specimens 

 have been obtained from this ground. 



Fig. 10. — Cucumaria elongata well expanded, showing the tentacles and dorsal ambu- 

 lacra ( X 3/2). 



Two specimens have been taken on different occasions on the Rame- 

 Eddystone trawling grounds, both from a position about 5 to 5| miles 

 S. I E. of Rame Head. 



The total num^ber of specimens obtained from all the grounds is about 

 35. They varied in size from about 1-4 cm. long and 2-5 mm. broad to 

 6-6 cm. long and 9 mm. broad at the broadest part. The specimens 

 when caught were U-shaped, or more or less S-shaped, with a tapering 

 posterior end, and varied in colour from a purplish brown to a browny 

 grey. 



NOTES ON CUCUMARIA ELONGATA. 



The discovery of this species in the Plymouth district is of some 

 interest with regard to the unravelling of the synonymy of British 

 Cucumarians. Bell in 1892 (11, p. 38) gives C. elongata Diib. and Kor. 



