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THE AMERICAN NATURALIST [Vol. XLII 



erate even 40 times. The successive regeneration of heads may be 

 checked by the regeneration of the tail. Regenerated parts when 

 detached from the worm are not capable of new regeneration. 



The most novel part of the paper is that which describes var- 

 ious cases of heteromorphosis. and oilier malformations in the 

 regenerating tail, including the regeneration of double tails in 

 Lumbriculus or of triple tails in Tubifex. 



Sergius Morgulis. 



September 7, 1908. 



THE BUDGE TT MEMORIAL VOLUME 

 John Samuel Budgett, naturalist, explorer, scholar and artist, 

 was born in Bristol, England, in 1872. He received his educa- 

 tion at University College in Bristol, and later at the University 

 of Cambridge, where he received the appointment as Balfour 

 Student in Natural Sciences, "the zoological blue ribbon of 

 Cambridge." Here he gave, in 1902, a course of lectures on 

 on the "Geographical Distribution of Animals," succeeding in 

 this work the eminent ornithologist, Professor Alfred Newton. 

 His work at Cambridge was interrupted and enriched by zoolog- 

 ical exploring expeditions to South America and to Africa, 

 efforts which from the natural history side were successful in 

 the highest degree, but which ultimately cost him his life. 



The first of these, in 1896, was to the Swamps of La Plata 

 River at Gran Chaco in Paraguay, in search of the singular 

 mud-fish, Lepklos'm-H paradojra. The life history and embryol- 

 ogy of this fish was expected to throw much light on the nature 

 of the order of Dipnoans to which it belongs. All stages of the 

 life history of Lepidosiren were represented in the collection 

 made by Mr. Budgett, and the expedition was brilliantly sue- 

 On the next expedition, in 1899, he visited the Gambia River, 



gathering material for not only the life history of the dipnoan! 

 Protopterus, but of different species of the equally interesting 



