26 Aves. 
AVES. 
[SCLATER, P. L.] & Hartlaub, G. On the Birds collected in Socotra 
by Prof. I. B. Balfour. P. Z. S. 1881, pp. 165-175, pis. xv.-xvii. 
This collection was made between Feb. 11th and March 30th, 1880, and 
consisted of 126 skins, referable to 36 species. Seven Fasseres are 
described as new, viz., Cisticola incana, Drymceca hwsitata [Timeliithv'], 
Lanius uncinatiis [Laniidoi], Cinnyris half our i [^Nectariniidce'], Passer 
insularis, Rhynchostruthus (g. n.) socotranus IFringillidoi'], Amydrus 
f rater \_Sturnid(je'\, and several are figured. The avifauna is similar to 
that of North-eastern Africa, but sufficient time appears to have elapsed 
since the separation of the island from Cape Guardafui to allow of some 
of the species becoming differentiated. 
- — & Salvin, 0. See Todirostrum signatum, sp. n., Euscarthmus 
jpelzelni, sp. n., Tyranneutes hrachyurus^ g. & sp. n., Myiarchus ajncalis, 
sp.n. \_Tyrannidoi'] ; Myrmotherula gutteralis, sp. n., Terenura spodio- 
ptila, sp. n. [^Formica: iidce] ; Pelecanidce^ Bpheniscidce (plates). 
Scott, W. E. D. On Birds observed in Sumpter, Levy, and Hillsboro’ 
Counties, Florida. Bull. Nutt. Orn. Club, vi. pp. 14-21. 
. Some Observations on the Migration of Birds. Tom. cit. pp. 
97-100 ; also in Nature, xxiv. p. 274. 
Attention having been drawn, accidentally in the first instance, to the 
flights of migrants passing between the disc of the full moon and the 
telescope at the Princeton Observatory, it would appear that the eleva- 
tion attained is from 1 to 2 miles ; with other interesting facts. 
Scully, John. A Contribution to the Ornithology of Gilgit. Ibis, 1881, 
pp. 415 & 567 et seqq. 
A very interesting series of notes supplementary to those of J. Bid- 
dulph (supra, p. 3). Syrnium hiddulphi, sp. n. [/Singes], is described and 
figured, and the specific distinctness of Otocorys pencillata and 0. longi- 
rostris is asserted and illustrated. The total number of species observed 
was 249. 
. See also Biddulph, J. 
Sedgwick, A. On the Early Development of the Anterior Part of the 
Wolffian Duct and Body in the Chick, together with some remarks on 
, the Excretory System of the Vertebrata. Q. J. Micr. Sci. 1881, 
pp. 432-468. 
Seeboiim, H Catalogue of the Passeriformes, or Perching Birds, in the 
Collection of the British Museum. Cichlomorplioi : Part ii., contain- 
ing the family Turdidce (Warblers and Thrushes). [Vol. v. of series; 
cf. Zool. Rec. xvi. Aves, p. 32.] 
In this highly conscientious work, the author expresses his opinion that 
the pattern of the colour in the subfamily Turdinoe is a character more 
trustworthy, as showing community of origin, than such structural differ- 
ences as the shape of the wings, tail, or bill. He proceeds to explain his 
mode of treating “ conspecies,” or forms between which the difference is 
only sub-specific. The family Turdidce is divided into two sub-families, 
Sylviince, with 104 species, and Turdince, with 237 species. In the 
