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instead of lying parallel to the length of the body, they stand at an 

 angle of at least 50° to it. Moreover, the balls are usually moved 

 independently of each other ; and the two seldom have the same 

 position. Tliey move continually and in short jerks, and, as they 

 stand well out from the head, their range of vision must be great. 

 The movement of the body proper is somewhat like that of an eel, 

 but rather stiffer and less rapid. It moves by vibratory undula- 

 tions of the dorsal fin, running from the front backwards, while at 

 the same time, the small pectorals vibrate with great rapidity. 

 When at rest, the dorsal fin is laid down on the back. When 

 alarmed, it vibrates its fins and wriggles the body forcibly. 



Atherina notata. — Sand-eel. A beautiful silvery sardine. Run- 

 ning in small schools, on a clean sandy bottom, and in only a few 

 inches of water. 



Fiindulus pisculentus. The commonest fry hereabout. Plenty 

 in all the marsh ditches and runs. 



Hydrargira Jlavula. Basse fry. A striped little fish ; not seen 

 in great numbers. 



Cyprinodon ovinus. Small thick minnow. Not common. 



Alosa vulgaris. Taken in seines ; crammed with spawn. 



Spinax acanthias. Taken in great numbers on the bar, filled 

 with young. Also said to be breeding in the autumn. 



Platyonychus ocellatus. Sand crab. Very abundant in shoal 

 water with sandy bottom. They are very quick and ferocious. 

 When pursued they retreat sideways ; but, if hard pressed, they 

 suddenly back under the sand. When taken they bite and strug- 

 gle fiercely. The females were charged with eggs, already seg- 

 mented. 



Libinia canalicidata. Common among the weeds in shallow 

 water. Often of great size. Very sluggish and stupid. It moves 

 forward slowly, and, if taken, makes little attempt to defend itself. 

 Always seen in the neighborhood of any dead animal, on which it 

 feeds, in company with Buccinum ohsoletum. No eggs seen. 



Palemon vulgaris [?]. Gliding about in ditches in large num- 

 bers. Sometimes they threw themselves forward with a sudden 

 jerk. 



Eupagurus pollicaris. Abundant in shallow water, on the 

 beach. Lives generally in shells of Pyrida or of Natica. In re- 

 spect to the organs of the mouth, which continually vibrate when 



