Ml'. R. B. Sharpe's Catalogue of Accipitres. 467 



stantly to differ in the two following points : — the peculiar 

 carinated ridge on the upper mandible is more sharply 

 defined by a channel on either side in M. alcinus than in M. 

 anderssoni, and the transverse bars on the wings and tail 

 appear to be always present in M. anderssoni but absent in 

 M. alcinus. 



It should also be mentioned that all the specimens of M. 

 alcinus which have been described (except the three from New 

 Guinea, to which I have alluded in a preceding footnote) 

 have exhibited an elongated occipital crest, whilst in M. 

 anderssoni the crest is so short and rudimentary that it hardly 

 deserves the name, though most of the occipital feathers are 

 pointed and slightly prolonged, and in some individuals the 

 prolongation is rather greater than in others*. 



At the time of the publication of Mr. Sharpe's volume, 

 Muchm^hamphus alcinus was only known as a native of the 

 Malay peninsula : since then, Mr. Hume, in the article to 

 which I have already referred, has recorded its occurrence in 

 a rather more northern locality, Malewoon, at the southern 

 extremity of the Tenasserim Province, and in the opposite 

 direction its range has been ascertained to extend as far south 

 as New Guinea ; and I have already referred to the three spe- 

 cimens which have been there obtained, and to the singular 

 fact of their being all crestless, a circumstance which may 

 perhaps indicate that they belong to a distinct local race. 



I am glad to be able to add to these recorded localities the 

 intermediate one of the island of Borneo, having recently 

 examined a fully crested specimen obtained in that island by 



a male, taken from the flesh, are given hy Mr. Hume in the article to 

 which I have already referred ; and similar measm-ements of both sexes of 

 M. ande)-sso7ii, also taken from the flesh, wiU be fomid in Ajidersson's 

 * Birds of Damara Land,' p. 24. The above-mentioned measm-ements may 

 also be compared with those of both species given by Mr. Sharpe in his 

 Catalogue, and with those of the female of M. anderssoni recorded by 

 MM. Milne-Edwards and Grandidier {I. c). 



* In the article on these two species in Mr. Sharpe's Catalogue, the 

 words at p. 343, " head very much crested," appear to have been acci- 

 dentally inserted in the description of M. anderssoni instead of in that of 

 M. alcinus. 



