Zoological Society. 345 



D. canipennis. Swains.) Nearly allied to the D. musicus, Vieill., of 

 S. Africa, but has the tail less deeply forked, the culmen of the beak 

 more aeute, and the primaries pale internally. 



43. Lanius algeriensis. Less, in Rev. Zool. 1839. This is probably 

 the species termed L. excubitor by Riippell. It differs from the true 

 excubitor of N. Europe in the greater extent of white on the prima- 

 ries, and in the two external pairs of rectrices being wholly white (ex- 

 cept the shafts). It closely approaches X. lahtora of India, and only 

 differs in wanting the narrow band of black across the front. 



44. Lanius nubicus, lAchi. (L. personatus, Teimn.) 



45. Lanius collurio, Linn. A young male specimen appears refer- 

 able to this species. 



46. N. Lanius isabellinus, Ehrenberg, Symb. Phys. fol. e. This 

 species is pale fulvo-cinereous above, cream-coloured below; rump and 

 tail rufous ; a broad blackish band from the nostril to the ear-covers, 

 margined above by a whitish streak. It much resembles L. arena- 

 rius, Blyth, Journ. As. Soc. Beng. vol. xv. p. 304, but is of a more 

 cinereous tinge above, and is distinguished from that and all the allied 

 Asiatic species by possessing a conspicuous white band at the base of 

 the fourth to the ninth primaries. The specimen from Kordofan has 

 an obscure dark transverse band near the tips of the rectrices. 



47. W. Telophonu^ senegalus (Linn.). (Lanius erythropterus, 

 Shaw.) 



48. W. Corvus scapulatus, Daud. (C leuconotus, Sw.) 



49. Corvus umhrinus, Sundevall. Distinguished by the length and 

 curvature of the beak, and by the grey-brown tint of the head and neck. 



50. W. Juida rujiventris, Riipp. 



51. W. Juida chalybea, Ehrenb. {Lamprotornis eyanotis, Sw.) 



52. W. Ploceus luteolus, Licht. (P. personatuSy Vieill., Jard. 

 Contrib. to Ornith. 1849, p. 35. pi. 7.) 



53. W. Ploceus sanguinirostris (Lirm.). 



54. W. Pyromelana ignicolor {YieiW.) . 



55. W. Vidua paradisea (Linn.). The series of immature speci- 

 mens in the collection have enabled me to detect a curious structure 

 connected with the development of the tail-feathers, which will be 

 treated of in a separate paper. See Sir W. Jardine's * Contributions 

 to Ornithology,' 1850, p. 88. pi. 59. 



56. W. Vidua principalis (Linn.). The specimen from Kordofan, 

 like those from Senegal, has a black spot on the chin, but it is not 

 yet proved whether the presence of this spot amounts to a specific 

 distinction. 



67. W. Pytelia elegans (Gm.). 



58. W. Amadinafasciata{G(m.). (Fringilla detruncata, hicht.) 



59. W. Amadina cantans (Gm.). A perfectly typical Amadina, 

 though M. Riippell makes it an Estrilda. 



60. W. Philetcerus nitens (Gm.). {Amadina nitens, Sw.) From 

 the pecuhar form of the beak I am disposed to refer this species, as 

 well as Estrilda squamifrons. Smith, E. musica, Gray, and Loxia 

 frontalis, Daud., to the genus Philetcerus. 



61. Crithagra lutea (Licht.), Temm. PI. Col. 365. 

 Ann.^ Mag. N,HisL^tv.2. Volix. 23 



