430 ON THE FAUNA AND BOTTOM-DEPOSITS NEAR THE 30-FM. LINE 



Anomia cphippiuni. ^ Generally on Pec- 

 ,, patellifonnis. ) ten opercularis. 

 Chiton asellus. Frequent on shells. 

 Pileopsis hungaricus. 

 Emarginula reticulata. 

 Trochus zizyphinus. In 35 only. Small 



variety. 

 Buccinuni undatum. Few or none. 

 Cypraea europaea. In 73 only. 



On hydroids. 



Tritonia plebeia. 



Doto fragilis. )^ 



Coryphella Landsburgii. ( 



Shells, 

 Solen ensis. Few. 



Psammobia ferroensis. One small one in 74. 

 Lutraria elliptica. Common. 

 Tapes virginea. Very common. 

 Venus striatula. 

 , , fasciata. 

 Artemis exoleta. 

 Cyprina islandica. 

 Astarte sulcata. 

 Cardiura echinatum. 



Few only. 

 Abundant. 



Nncula nucleus. 

 Pcctunculus glycimeris. 



Pinna jiectinata. One in 73 only. 

 Lima Loscombii. Frequent. 

 Pecten tigi'inus. Not numerous. 



,, niaximus. Abundant. 



,, opercularis. Abundant. 

 Dentalium entalis Not abundant. 

 Turritella communis. Not abundant. 

 Scalaria Turtonis. One in 73 only. 

 Buccinuni undatum. In 73 only. 



POLYZOA. 



Cellaria fistulosa. Very little. 

 Scrupocellaria scruposa. In 85 only at 

 roots of Antennularia. 



Bugula avicularia. One piece in 85. 



Cellepora avicularis. \ ^ , , . , . 



_ . , On hydroid stems. 



Crisea eburnea. ) 



Incrusting Polyzoa numerous. For list 

 see Table VI., p. 534. 



TUNICATA. 



Styelopsis grossularia. Small flat variety 

 common on shells, es- 

 pecially Pecten maximus 

 shells. 



Polycarpa varians. Abundant. 



Ascidiella scabra. Not numerous. 



Ciona intestinalis. In 73 only. 



Ground XV. East Eddystone Fine Gravel. 



Raids. 33 (Dr.) and 97 (Dr. and C.-dr.). 



Two hauls lying from one to two miles east and south-east of the 

 Eddystone have a similar fauna, and have been united as Ground XV. 

 Bottom-deposit. Fine gravel. 

 The texture of a sample taken at 97 is as follows : — 



[97. Average grade of sample, 4"471. Percentage of carbonate of 

 lime in whole sample, 46"68. Highest percentage in V., which contains 

 7770 per cent. In 97 II. the gravel consists of Trias, 91 per cent.; 

 Eddystone reef, 7 per cent.; Devonian, 2 per cent. In 97 III. the 

 proportions are Trias, 75 per cent.; Eddystone reef, 17 per cent.; 

 Devonian, 8 per cent. Sixty foraminifera were counted in 0"13 grams 



