284 



THE ZOOLOGIST. 



his biological students at Truro for enthusiastic co-operation in 

 every part of the work. 



A. Brachyura. 



The Gulf-Weed Crab, Planes miniitus (L.), drifts occasionally 

 into the Cornish seas. In August, 1899, three were captured on 

 a barnacle-covered log at the outer end of the Manacles along 

 with two Stone Bass. Between 1900 and 1908 it was obtained 

 several times both by Vallentin and by the writer on baulks of 

 timber, covered with Lepas anatifera, picked up in the offing at 

 Newquay. In April, 1902, a baulk similarly populated drifted 

 ashore on St. Agnes, Scilly. In May, 1908, after very stormy 

 weather, the beach at Perranporth was strewn with shells of 

 Lepas, and three examples of this Crab were found and sent in 

 by H. Thomas. It is interesting to note that all previously 

 recorded specimens had been captured on the south coast. The 

 Square or Angle Crab, Gonoplax rhomboidalis (L.), here taken as 

 synonymous with G. angulata, Pennant, is generally distributed 

 on muddy sand and gravel along the south and at Scilly in 15 to 

 45 fathoms, but is often scarce and never plentiful. Occasionally 

 it occurs on fine clean sand and, in places, in relatively shallow 

 water. It is moderately common on the Bame-Eddystone 

 Grounds (M.B.A.), has been taken in Whitsand Bay East, and 

 is of frequent occurrence south of Looe, and in 20 fathoms 

 downwards off Polperro. Locally it is fairly common around 

 Mevagissey, in Gerrans Bay, and in Falmouth Bay, and is 

 frequently found in trawl-refuse from the Gull Kock southward 

 in 40 to 45 fathoms. Near the mouth of the Helford Kiver it 

 has been taken several times in 4 to 5 fathoms. It has been 

 found in greatest quantity five miles south-east of Helford in 

 30 fathoms, and in 20 to 25 fathoms about five miles west of 

 Mullion, though in Mount's Bay generally it appears to be scarce 

 and in many places absent. It has not been observed in trawl- 

 refuse near the Wolf. In Scilly it has been trawled in 35 to 

 40 fathoms to the east and south-east of St. Mary's, in deep 

 water outside the Bishop, and about fifteen miles W.N.W. of 

 Tresco ; and is moderately common about two miles N.N.E. of 

 St. Martin's Daymark. It does not appear to have been recorded 

 in a live state from the north coast of the mainland, though it 



