NOTES ON CORNISH CRUSTACEA. 



297 



such a character can scarcely be considered satisfactory. Ebalia 

 tumefacta (Mont.) is very local but in places abundant in 25 to 

 50 fathoms, especially on coarse sandy gravel and on stony sand 

 and gravel. In shallower water and on other types of ground it 

 occurs rather sparingly. It is abundant to the west of the 

 Eddystone (M. B. A.), on coarse gravel about four miles S. S.E. 

 of Portwrinkle in 25 fathoms, far south of the Dodman in about 

 50 fathoms, in 40 fathoms five or six miles south of the Gull 

 Eock, Portscatho, and in 25 to 30 fathoms in the North Channel, 

 Scilly, about a mile south-west of Mincarlo. It is not un- 

 common at Polperro (Robinson) and near Gorran, and is occa- 

 sionally found in trawl-refuse at Mevagissey, Falmouth, and 

 Penzance (Tregelles), and from near the Wolf. Two females 

 were dredged in Gerrans Bay in 1901 and a male in 1906 in 

 about 12 fathoms. A few specimens have been captured in 

 15 to 20 fathoms south-east of Helford, and in 22 fathoms west 

 of the Boa Eock, Mount's Bay. Vallentin found two females in 

 14 fathoms at St. Ives, and one was obtained in 15 fathoms 

 north-west of Chapel Forth. E. tuberosa (Pennant) is also 

 widely spread, but is nowhere abundant. It is found along with 

 E. tumefacta to the west of the Eddystone and to the south of the 

 Dodman, occurs sparingly in Mevagissey and Falmouth Bay, 

 has been found in trawl-refuse from east of the Lizard and at 

 Penzance, and has been sent in from Newlyn. It is very rare at 

 St. Ives in 10 to 12 fathoms and a single specimen has been 

 obtained from trawl-refuse atPadstow. At Scilly it occurs along 

 with E. tumefacta on fine sand in 8 fathoms south of Great 

 Ganinnick, in 40 fathoms to the north of Menavawr, and also in 

 trawl-refuse at St. Mary's. E. cranchii, Leach, is very scarce. 

 It occurs on sandy gravel on the Eddystone Grounds to the west 

 of Hand Deep (M. B. A.), has been taken near Polkerris in 

 St. Austell Bay, and in trawl-refuse at Falmouth (Cocks). A 

 single example was taken in May, 1902, in 18 fathoms to the 

 south of Gull Eock, Portscatho, and another in June, 1907, in 

 30 fathoms. Tregelles has taken a number of specimens at 

 different times in Mount's Bay. At Scilly two were taken 

 in July, 1903, in coarse sand half a mile west of Shipman 

 Head. 



The essentially southern species, Dromia vulgaris, Milne-Edw., 

 Zool. 4th ser. vol. XIII., August, 1909. 2 A 



