.352 JfOVlTATES ZOOLOOICAE XXV. 1918. 



6. Treron calva ansorgei subsp. nov. 



Very simiLar to T . calva salvadorii. but the nuchal collar not quite so sharply 

 defined, underside and head generally a little brighter and more yellowish, 

 wings (J ? 169-182 mm. 



Benguella. Mossamedes (Ansorge), Gambos (Veth and van der Kellen), 

 Bailundu (C. H. Pemberton). 



Type : <J ad., No. 298, Huilla, Mossamedes, 21. ii. 1906, W. J. Ansorge coll. 



Named after the late Dr. W. J. Ansorge, from whom the Tring and the 

 British Museum have received magnificent collections from various parts of 

 Angola.* 



7. Treron calva nndirostris (Swains.). 



Vinago nudirostris Swainson, B. 11'. Ajrica, ii. p. 205 (1837 — Senegal). 



While in all the foregoing subspecies the bare portion of the bill extends 

 more or less to the forehead and is longer than the hard fore-part of the bill 

 (rhamphotheca), in T . c. nudirostris it is in both sexes less long than the latter. 

 In the female it is shorter than in the male, but unfortunately we could not 

 examine a good series. Mr. Riggenbach only sent three skins, two males and 

 one female. The wings appear to be short, in our largest male only 163 mm. 

 The colour is generally rather light and yellowish ; the nuchal collar is not 

 very distinct, in fact, except in one specimen, no more so than in any Congo 

 birds (T. c. calva) ; head and underside fairly bright and yellowish, more as in 

 salvadorii than in calva. 



We know this form only from Senegambia. How far it extends eastwards 

 we are unable to say. Reichenow supposed that this form — although he separ- 

 ated it trinomially, as a subspecies — occurred also m East Africa and South- 

 west Africa. His East African birds, so far as he actually had them before his 

 eyes, were mostly almost certainly the new form described hereafter. The 

 South-west African birds were erroneously included, evidently on account of 

 the statement of Bocage, as Reichenow did not examine either Ivens', nor 

 Anchieta's, nor van der Kellen's specimens. 



* The late Dr. William John Ansorge was one of the best collectors who ever collected for 

 the Tring Museum. Though not a zoologist and without knowledge of the species of birds and lepi- 

 doptera, he obtained most valuable material of study, and the collection of fishes which he made 

 for the British Museum in Nigeria is of the greatest importance. His ancestors lived in Silesia, 

 where Ansorge is a common name, but when and who of his forefathers became a British subject 

 I do not know. He was bom in India in 1850 and died in Anj^ola in 1914. I was surprised 

 to learn that he was only sixty-four years of age, as his white beard and bald head gave him the 

 appearance of a much older man. though he was good-looking and young in habits and energy. 

 Having been educated at Mauritius and in Cambridge, ho became a professor of the Royal College, 

 Mauritius, but in 1886 came to England to study medicine. In 1892 he went out to Uganda, where 

 he began to collect. At the beginning his skins were rather bad, I'ut the superior and methodical 

 way of labelling butterflies and birds, together with his industry and warm interest in all zoological 

 objects, was evident, and I personally instructed him in skinning, so that his skins soon vastly 

 improved. The large collections from northern Angola. Benguella, and Jlossamedes in the Tring 

 and British Museums have never been completely stuiiicd, though many novelties from them 

 were described, chiefly by myself and Oscar Neumann, and they were partially utilised at many 

 opportunities, as in the present case. The British Museum also possesses many mammals collected 

 by Ansorge and a fine collection of birds made in Portuguese Guinea in 1909, out of which 

 Mr. Ogilvie-Grant described a few new forms. The name .Ansorge will always be remembered by 

 students of African ornithology and entomology, and a number of birds, fishes, and lepidoptera 

 bear his name. — E. Habtert. 



