152 Dr. Gr. A. K. Marshall on Alcides, Schonh. 



contrasts prominently with the mahogany-red rump. Fore 

 and hind feet deep rufous speckled with white, but how far 

 these white specklings may be an individual abnormality I 

 have no means of judging. Tail, without tuft, about 2 inches 

 in length, the tuft well marked, its hairs rather more than an 

 inch long, wholly white, though there is a narrow rufous line 

 running along the top of the tail basally. 

 Middle of neck to rump about 24 inches. 

 Bab. Zanzibar. 



Type. Native skin. B.M. no. 18. 5. 25. 1. Presented 

 and collected by Dr. W. M. Aders. 



By its reversed nape-hairs and general type of coloration, 

 with brown fore back and rufous rump, this striking duiker 

 shows relationship to C.weynsi, but it is at once distinguished 

 by the whitish bands which run across the thighs and show 

 up the brilliant rufous of the rump, and by the wholly white 

 tail-tuft, that of C. toeynsi being prominently blackish above. 

 These characters are so marked that, although the specimen 

 is a native skin, without head or hoofs, I feel justified in 

 describing it, but hope Dr. Aders may soon be able to obtain 

 a complete example of so striking an animal, on whose 

 discovery he is to be congratulated. 



XIV. — Notes on Alcides, Schonh. (Curculionidce, Coleoptera). 

 By Guy A. K. Marshall, D.Sc. 



Considerable confusion exists in collections with reference 

 to the strikingly marked species of Alcides related to 

 A. delta, Pasc. Pascoe's original description (Journ. Linn. 

 Soc. Lond., Zool. x. 1870, p. 460) was based on three speci- 

 mens, from Ceylon, Ceram, and Amboyna respectively ; of 

 these he selected the Ceylon specimen as his type, and the 

 other two examples now prove to belong to a quite distinct 

 species. Subsequently he gave a figure of A. delta {ibid. xi. 

 1871, pi. ix. fig. 10), but instead of illustrating his type he 

 unfortunately selected a so-called ''variety/' which turns 

 out to be yet a third species, and was later described by 

 Kirsch under the name of trianyulifer (Mitt. Mus. Dresd. i. 

 1875, p. 40). Probably misled by Pascoe's figure, Aurivil- 

 lius in 1891 (Nouv. Arch. Mus. Paris, (3) iii. p. 218) sunk 

 triangulifer as a synonym of delta, and thus it stands in 

 Bovie's ' Catalogue of Alcidinse ' (Wytsman, fasc. 71). 



