Riippell's Neue Wirbelthiere. 277 



Capra walie, Riipp. Tab. 6, is very like the C. ibex, but it has a 

 prominence between the base of the horns, and the legs are coloured 

 like those of C. Nubiana and C. Siberica. 



The birds described and figured are three species of hornbill, Buceros 

 cristatus, B. limbatus, and B. fiavirostris, all somewhat allied, how- 

 ever, to species already known. Corythaix leucotis, Rupp. Tab. 3, 

 a new species, at once distinguished by the white patch at the ex- 

 tremity of the auricular feathers, and making this beautiful genus 

 now consist of six. 



Corythaix leucotis, Rupp. — Rostro coccineo ; palpebris superioribus papillis 

 carneis ; pileo crista plicatili obscure viridescenti ornato ; collo et pectore laete 

 prasinis ; abdomine et tibiis canescentibus ; dorso, alis et cauda ex violaceo vi- 

 ride-splendentibus ; remigibus ex sanguineo purpurascentibus viride marginatis 

 — macula anteocularis et plaga auricularis ad collum decendens niveae. 



Ckizaerhis zonurus, Riipp. Tab. 4. Very interesting, as being the 

 second species of the genus, and observed by our traveller in the pro- 

 vince of Dembea, &c. It is nearly of the size of the Ch. (muso- 

 phaga) variegatus, and will be at once distinguished by the form of 

 the crest, and the white band on the tail. 



Ch. zonurus, Riipp — Rostro citrino, capite et collo ex badia fuscentibus, plu- 

 mis nuchae elongatis, lanceolatis, albo marginatis, gastraco et tibiis ex umbrino et 



albido variis Corpus supra ex umbrino cinerascens remigibus nigricantibus ; 



eorum vexillis internis macula alba. Rectrices dilute brunnas, earum concolores, 

 quatuor externae media parte taenia ex albida lata, apicibus fuliginosis. 



Corvus crassirostris, Riipp. Tab. 8. — Consideredby Riippell as dis- 

 tinct but closely allied to the strong-billed species of southern Africa. 

 The distribution of the European crows is mentioned here (p. 10,) 

 from which it appears that the C. cornix is pretty abundant during 

 winter between Cairo and Suez. C. monedula and frugilegus in 

 lower Egypt, and Pica vulgaris during winter in lower Egypt. C. 

 aifinis and Capensis are described, but a diagram of the heads and bills 

 is only given. Ptilonorhynchus albirostris, Riipp. Tab. 9. This is 

 an interesting form ; and, if true to the type of the genus in which 

 Riippell has placed it, will show a wider distribution than what 

 was imagined, the form not having been hitherto seen on the African 

 continent. It is a gregarious species ; and, to judge from the habits 

 and distribution of colour, and the figure which we have in this at- 

 las, we should be inclined to consider coming closer to the Lampro- 

 torni. The male and female are figured. 



Pt. albirostris, Riipp — Mas, colore supra et subtus nigro splendore casruleo, 

 remigibus primaris rubiginosis, apice nigro, tectricibus niajoribus et cauda ni- 

 gris, rostro albido. Fcem, capite collo ct pectore cinereo casrulescente. 



NO. 111. T 



