454 Messrs. Sclater and Finsch's Index to the 



6. On two new Species of Birds. Ann. & Mag. N. H. ser. 4. 

 x. p. 114 (1872). 



Dicantm retrocinctum, from the Philippines, and Colluricincla 

 parvissima, from " Rockingham Bay, East Australia." 



7. Descriptions of three new Species of Humming-birds. 

 Ann. & Mag. N. H. ser. 4. x. pp. 452-453 (1872). 



The three species here described are called : — Iokema white- 

 lyana, from Cosnipata, province of Cusco, in the Peruvian 

 Andes ; Adelomyia chlorospila, from San Antonio, in the Pe- 

 ruvian Andes; and Adelomyia cervina, from near Medellin, 

 in Columbia. 



Gray, Robert. 



1. Letter from. Ibis, 1872, pp. 201, 202. 



On a specimen of Balearic Crane [Grus pavonina) shot near 

 Dairy, in Ayrshire. 



2. Letter from. Ibis, 1872, pp. 335, 336. 

 On Pallas's Sand-Grouse seen in Ayrshire. 



Grayson, Col. Andrew J. 



On the Physical Geography and Natural History of the 

 Island of the Tres Marias and of Socorro, off the Western 

 Coast of Mexico. By Col. Andrew J. Grayson. Edited 

 by Geo. N. Lawrence. Proc. Bost. Soc. N. H. xiv. 

 pp. 261-302. 

 Contains an account of the late Col. Grayson's expeditions 

 to the islands of Tres Marias and Socorro, off the western coast 

 of Mexico, and Catalogues of their birds. In Tres Marias 

 53 species were met with, amongst which was a new Hum- 

 ming-bird of the genus Pyrrhophcena, named by Mr. Lawrence 

 P. graysoni. Other species, peculiar but already described, 

 are Granatellus francesccs, Baird, and Icterus graysoni, Cassin. 

 Socorro, belonging to the Revillagigedo group, was visited 

 by Col. Grayson in 1867. Here 14 species were obtained, 

 amongst which were the new species described by Lawrence 

 and Baird in 1871. (See Ibis, 1872, p. 440.) 



Gulliver, George. 



On the Oesophagus of the Pied Hornbill (Toccus melano- 

 leucus) : being an Appendix to a paper on the Taxonomic 



