INVERTEBRATE ZOOLOGY 



fine example of Madrepore coral, measuring ten feet across and weigh- 

 ing nearly two tons. 



A series of hydrozoans and actinozoans, containing forty-seven 

 specimens mounted in alcohol and representing the marine life of the 

 Bay of Naples, was received in 1896 as a gift from Mr. William E. 

 Dodge. 



The other groups of invertebrates, namely, the echinoderms, an- Echinoderms 

 nulates, and arthropods (aside from insects) are represented by typical ArX'cTods 

 specimens, although our collections are not extensive. The structure Moiiusks. 

 and anatomy of the more complicated invertebrates, such as the clam 

 and the oyster, are shown by models enlarged six to seven diameters. 



Models have also been prepared showing the consecutive stages 

 in the development of the eggs of different forms, namely: mollusk, 

 brook trout, frog, and lancelet. These series, in each case, embody 

 the researches of investigators in their particular subjects and are 

 prepared under their supervision or from their published works. 



To bring out more clearly the relation between man and the lower Malaria 

 animals a series of models, illustrating the development and structure Mosc i ulto - 

 of the Malaria Mosquito and the life cycle of the Malaria Organism, 

 has been prepared. 



The Marine Habitat Groups represent the typical life of several Marine 

 marine species. These include sea urchins, brittle stars, land crabs, ^ ab u lt ^ t 

 and sponges. 



Marine invertebrate material acquired through expeditions, in 

 addition to those previously mentioned, includes many species of sea 

 fans, gorgonias, crustaceans, etc., from Bermuda, and echinoderms, 

 sea anemones, sea cucumbers, starfish, etc., from the Bahamas, all 

 collected and presented by Professor R. P. Whitfield; actinians and 

 alcyonarians from the West Indies, collected by Dr. J. E. Duerden; 

 sea fans, etc., from the Bahamas, collected by Professor William 

 Morton Wheeler; sea urchins, etc., from Newfoundland, collected 

 by Mr. L. P. Gratacap; and other invertebrate material from Massa- 

 chusetts, Florida, New Mexico, Alaska, Patagonia, Siberia, and the 

 Philippine Islands. 



[61] 



