93 
NOTES BEARING ON VAN BENEDEN, LEUCKART 
AND SONSINO WHOSE PORTRAITS APPEAR IN 
PARASITOLOGY, XIV, No. 1. 
Portrait-plates XII—XIV. 
(Continuing the series begun in Vol. xiii.) 
By GEORGE H. F. NUTTALL, F.R.S. 
[From the Molteno Institute for Research in Parasitology , 
University of Cambridge.) 
Pierre Joseph van Beneden 
1809-1894. 
(Portrait-plate XII.) 
Pierre Joseph van Beneden was born 19 December, 1809, at Malines, 
Belgium, and died 8 January, 1894, at Louvain. He graduated in medicine 
(1831) and became Curator of the Natural History Museum, Louvain, where he 
became Professor of Zoology and Comparative Anatomy in 1836. Besides doing 
zoological work of high value which he pursued actively to the end of his life, 
he established at his own expense in 1843, a marine aquarium, one of the first 
of its kind. In parasitology he attained great distinction through his investi¬ 
gations upon the biology of parasitic worms and their relation to their hosts, 
his work Memoire sur les vers intestinaux (viii + 376 pp. 28 pis. 4°), published 
in 1858, bringing him the “grand prix des Sciences physiques" of the Institut 
de France. In 1875 he published his results in popular form under the title 
Les commensaux et les 'parasites dans le regne animal , as one of the International 
Science Series, this appearing both in English and German translations. His 
publications number over 200 and he was joint author with Paul Gervais of 
a general work on medical zoology in two volumes (1859). 
He was the recipient of many distinctions and much esteemed for his high 
character. He was elected Foreign Corresponding Member of the Royal 
Society in 1875 and President of the Royal Belgian Academy in 1881. He 
received the Hon. LL.D. Edinburgh in 1884 and was made Grand Officer of 
the Order of Leopold in 1886. He left a large family of daughters and one son, 
