NOTES ON CORNISH CRUSTACEA. 



305 



Head, and has once been secured in trawl-refuse from the mouth 

 of the Bristol Channel, and once from 40 miles west of the 

 Longships. Specimens in berry have been obtained in February 

 and March. 



The Sculptured Shrimp, Egeon sculptus, Bell, is occasionally 

 found in 15 to 30 fathoms about Plymouth (M. B. A.), has been 

 dredged in 12 fathoms to the south-east of Portwrinkle, Whit- 

 sand Bay, and taken casually in Mevagissey Bay, and in 

 25 fathoms outside Falmouth Bay. It has been found in trawl- 

 refuse from 40 to 45 fathoms some miles east of Coverack, 

 and also from the Wolf. At Scilly it was fairly common in 

 30 fathoms about the mouth of Crow Sound in July, 1904, 

 several females being obtained in berry. It is frequently iden- 

 tified in trawl-refuse from the mouth of the Bristol Channel. 

 The tiny Banded Shrimp, Egeon fasciatus, Bisso, is thinly and 

 irregularly distributed on sand along the south coast about low- 

 water mark down to 5 fathoms, and as a casual in deeper water. 

 It is not uncommon in Cawsand Bay, and occurs in the west 

 entrance to Plymouth Sound (M. B. A.), and in 4 fathoms a little 

 to the east of Longstone Bock. It has been sent in from 

 Looe, Talland, and St. Austell Bay, has twice been captured at 

 Gyllyngvase, and once dredged in 23 fathoms to the south-west 

 of Helford Kiver. It was not uncommon on Marazion Beach at 

 low spring-tide in June, 1904, and has been taken sparingly at 

 Porthcressa and to the south of Guthers Island, Scilly. On the 

 north coast it has not been recorded. Females in berry have 

 been found in the early spring. The Common Shrimp, Crangon 

 vulgaris (L.), is very common, and in places abundant on sand 

 and " scuddy " ground, especially when Zoster a or seaweed is 

 present, from low-water down to 10 fathoms, and occasionally in 

 deeper water, all along the south, except where the coast is much 

 exposed. On the Bristol Channel side its distribution is natur- 

 ally very irregular. At Scilly it is usually common, but the 

 numbers fluctuate considerably. It appears to breed the whole 

 year round. Crangon alkmanni, Kinahan, was common three 

 miles S.S.W. of Bame Head in August, 1898 (M. B. A.), but has 

 not been found further west. Two specimens of the rare Typton 

 spongicola, Costa, were obtained by Jonathan Couch from a 

 Sponge, Halichondria pahnata, hooked up from 30 fathoms, and 



