184 PRACTICAL ZOOLOGY. 



ACTINOIDS. 



Sea-fan. Bahamas 1 



Same. Horny axis 1 



Same. Spicules mounted 1 



Echinoderms. 



Starfish for dissection. New England 25 



Same. Dry 25 



Same. Prepared, showing skeleton 1 



Same. Decalcified 1 



Same. Injected rays showing water system 5 



Section of plate showing microscopic structure. Mounted . 1 

 Young starfish showing the budding out of rays. Stained 



and mounted 1 



Large W. I. Starfish (Ore aster) 1 



Brittle stars (Ophiurans) . Dry 3 



Sea-urchins. Ale. For dissection. New England ... 25 



Same. Tests. Dry 25 



Same. Ale. specimen decalcified 1 



Same. Section of plate showing microscopic structure. Slide 1 



Large W. I. Sea-urchin (Hipponoe). Test 1 



Clypeastroid (Sand-dollar), with spines 1 



Clypeastroid (Sand-dollar), without spines 2 



Clypeastroid (Echinanthus). W. 1 1 



Holothurian. Common sea-cucumber (Pentacta). New Eng- 

 land 1 



Synapta. Microscopical preparation showing plates in body 



wall 1 



Worms. 



Nereis in test-tube. Ale 1 



Polyzoan (Bugula). Dry. 



Brachiopod (Terebratulina). Ale . 2 



Mollusks. 



Clam killed with siphons extended 1 



Mussel. Ale. or shell 1 



Carnivorous sea-snail (Lunatia) 1 



Carnivorous sea-snail (Purpura) 2 



Limpet. Ale. New England 2 



Squid. New England 2 



