Vol. xvi.] 112 



throat is not pure white. P. malaccensis differs in various 

 characters, and especially in the colour of the back, rump 

 and upper tail-coverts being brownish-buff, with black 

 spots, while P. hicalcaratus is larger, has purplish-violet 

 eye-spots, a more crested and ashy-grey crown and hind- 

 neck, and a more greyish upper surface. About the nomen- 

 clature of these forms see '^Nov. Zool.,' 1902, pp. 538, 539. 

 There can be hardly any doubt that P. hicalcaratus, P. 

 germaini, P. malaccensis, and P. katsumatce are geographical 

 representatives of one another." 



Professor Oscar Neumann exhibited an adult male 

 specimen of Lophotriorchis lucani, Sharpe, from the collec- 

 tion of the late Baron Erlanger, and stated that it was the 

 first adult specimen of the species he had seen, as he con- 

 sidered that the so-called adult specimen mentioned by Dr. 

 Sharpe, " Ibis," 1904, pp. 102, 599, was nothing but a male 

 of Hieraetus spilogaster. 



These species were very similar to one another in colour, 

 and the fact that the female of the smaller approached 

 in size the male of the larger, accounted for the 

 two species being sometimes confomided. The late 

 Baron Erlanger figm-ed adult pairs of both species in 

 the " Journal fiir Ornithologie" for 1904, pis. IX. and X., 

 but believing the smaller one to be the true H. spilogaster, 

 he described the larger species as Hieraetus fasciatus minor, 

 while Bonaparte's description of Spizaetus spilogaster is 

 clearly that of the larger species, to which also refer the 

 names 8. conurus, v. Miill, 8. leucostigma, Heugl., and 8. 

 ayresii, Gurn. 



The species could be very well distinguished by the 

 under wing-coverts, which showed a large black patch in H. 

 spilogaster, while those of L. lucani were white with numerous 

 black spots. There was always an obsolete white shoulder- 

 patch in L. lucani,]nsi as in Aquila pennata, and it had been 

 suggested by Mr. Kleinschmidt, thati. lucani might be the 

 African rejDresentative of Aquila pennata. 



LopJiotriorchis lucani was now known from Landana (Brit. 



