164 Proceedings of the Biological Society of Washington. 



Museum of the Honourable East India Company;" direction 

 for arranging the plates in binding; and a list of the birds and 

 mammals arranged according to the contents of the parts as 

 issued. 



Zoologists are indebted to Dr. Charles W. Richmond for 

 working out the dates of publication of the various parts of 

 this work.i The supplemental pages were issued evidently in 

 1824 with Part 8, or subsequent thereto. The plates are not 

 numbered and the text is unpaged. Each plate of "illustra- 

 tions" is accompanied by one page of explanations. 



On page [9] of the supplemental text, following the list of 

 Javanese birds, is the following statement, with a list of the 

 species figured, the mammals and the birds being catalogued 

 separately : 



"The following order is proposed for the arrangement of the Subjects 

 and Plates in the binding of the Volume. To facilitate the reference to the 

 Plates of Illustration, the order in which the Subjects were given in the 

 successive Numbers, is added. The Plates of Illustration should be bound, 

 in the order of publication, at the end of the Volume." 



The plates in this work are commonly cited by number, and 

 ostensibly according to the above-mentioned arrangement for 

 binding suggested in the supplementary pages, which would 

 appear to be the logical sequence rather than the order of 

 publication given (without, however, the plates of "illustra- 

 tions") on page [10] of the supplement. The mammals, which 

 are placed first and by which plates 1 to 32 are occupied, have 

 been by authors correctly cited by plate numbers, but most 

 of the birds have been commonly quoted wrong. This has arisen 

 from the fact that on each of two of the bird plates there are 

 figures of two species, and that two of the plates represent but 

 one species. The four species on the two plates (Muscicapa 

 banyumas and Muscicapa hirundinacea on plate 38, and Timalia 

 pileata and Timalia gularis on plate 42) are given in the list 

 proposed for arrangement of the plates in binding as though 

 they occupied four plates, whereas for the two plates of Irena 

 puella the species is entered only once. This has resulted in 

 the citation of Muscicapa hirundinacea commonly as plate 39, 

 whereas it appears on plate 38; and all the numbers following 

 this are thus also out of order, as, for instance. Anas arcuata, 



iCf. Mathews, Birds of Australia, VII, pt. 5, July 10, 1919, p. 475. 



