the "Zoological Journal" and the "Proceedings of the Zoological 

 Society." His latest publication was the "Catalogue of the Lepi- 

 dopterous Insects in the East India Museum." It was compiled 

 by Mr. Moore, his assistant, from Dr. Horsfield's materials and 

 manuscripts, and under his direction. Dr. Horsfield had some years 

 before commenced a catalogue of these insects, of which only two 

 parts were published (1828-29). This publication, though incom- 

 plete, deserves notice, as it contains an elaborate introduction, with 

 a general arrangement of the Lepidoptera founded on their meta- 

 morphosis. The importance of the transformations of insects in 

 reference to their classification had indeed become early impressed 

 on Dr. Horsfield's mind. He accordingly spent three seasons dur- 

 ing his stay in Java in collecting the larvae of numerous species of 

 Lepidoptera, watching their development, and making careful 

 descriptions and drawings of their successive changes up to the 

 perfect state. 



Dr. Horsfield always took the deepest interest in the progress 

 of natural history, and especially in the systematic arrangement 

 of animals, in which he adopted the views of Mr. McLeay. His 

 classification of the diurnal lepidoptera and of birds exhibits great 

 powers of philosophical analysis. 



His numerous scattered papers, if put together, would constitute 

 several large and valuable volumes, and many of them, more espe- 

 cially those on geology and natural history of the Eastern Archi- 

 pelago, well deserve to be collected in a separate form. 



Dr. Horsfield was a man of retiring habits, but of amiable char- 

 acter and unblemished integrity. He was one of the few Americans 

 who became a Fellow of the Royal Society of London (in 1828). 

 He was a member of many other societies including the Batavian 

 Society, the Zoological Society of London and the Geological Society 

 of London. He was elected a Fellow of the Linnean Society in 1820 

 and later became one of its vice-presidents. 



Three genera of plants have been named Horsfieldia at different 

 times. Horsfieldia of Willdenow (1805) is the oldest and com- 

 prises plants of the Myristicaceae. It is in current use and included 

 more than fifty species of nutmegs. The genus Horsfieldia of Blume 

 (1830) was composed of a species of the Araliaceae. Chifflot (1909) 

 designated the genus Horsfieldia for some of the Gesneriaceae. 

 Because Horsfieldia was first used by Willdenow in a generic sense 



