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Show 1871.] ON NEOTROPICAL LARID_E. 573 Onychoprion panaya, Gould, B. Austr. vii. pl. 33. Sterna nubilosa, Sund. Ofv. af K. V. A. Forh. 1869, p. 589. Haliplana discolor, Coues, Ibis, 1864, p. 392; Lawr. Ann. L. N. Y. viii. p. 104 ; Elliot, Birds N. Am. ii. pl. 57. Hab. British Honduras (Salvin); West Indies, Sombrero (Allen). Genus 7. HYDROCHELIDON, Boie. 1. HYDROCHELIDON FISSIPES. Sterna fissipes, Linn. S. N. i. p. 228. Sterna plumbea, Wils. Am. Orn. vii. pl. 60 ; Pelz. Novara-Reise, Orn. p. 155. Hydrochelidon plumbea, Baird, B. N. A. p. 864. Hydrochelidon fissipes, Coues, Ibis, 1864, p. 391; Gundl. Repert. F. N. i. p. 393 ; Salv. Ibis, 1864, p. 385. Hab. West Indies, coast of Cuba (Gundl.) ; coast of British Honduras (Salvin) ; Chili (Pelzeln). Subfam. III. LARINEE. Genus 1. LARUS. Sect. A. BLASIPUS, Bruch*. 1. LARUS MODESTUS. Larus modestus, Tsch. Wiegm. Arch. 1843, pt. 1, p. 389 ; F. P. Aves, p. 53 et p. 306, t. 35 ; Pelz. O m . Nov. Exp. p. 151; Ph. et Landb. Cat. Av. Chil. p. 48. Larus bridgesi, Fraser, P. Z. S. 1845, p. 16, et Zool. Typ. t. 69. Blasipus bridgesi, Bp. Rev. Zool. 1855, p. 21, et Consp. ii. p. Hab. Pacific coast of Peru, south of Lima (Tsch.); Valparaiso (Bridges); Chili (Segeth). Of this Gull we have seen only the specimens in the British Museum, one of which is the type of Fraser's L. bridgesi. It is certainly quite distinct from Larus fuliginosus, although more nearly allied to it than to any other species. Mr. Fraser has already pointed out the differences between them. Of these, the more slender bill renders the present bird recognizable in every stage. Besides in the adult L. fuliginosus there is a distinct black hood, which is entirely wanting in L. modestus. 2. LARUS FULIGINOSUS. Larus fuliginosus, Gould, Zool. Beagle, iii. p. 141; Sclat. et Salv. P. Z. S. 1870, p. 323. Leucophceus fuliginosus, Bp. Consp. ii. p. 232. Hab. Galapagos (Darwin, Habel). * This MS. generic name of Bonaparte was first published by Bruch (Journ. f. Orn. 1853, p. 108), with L. modestus, Tschudi, for the type. Lawrence (B. N. A. p. 848) gives 1852 as the date of the genus, but no reference; Gray (List of Gen. p. 130) does the same; but Bonaparte (Rev. Zool. 1855, p. 21) expressly states that both this name and Leucophceus of his M S . were first published bv Bruch in ia*53. |