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Show 574 MR. P. L. SCLATER ON NEW FORMICARIANS. [NOV. 26, have long tried in vain to find a published description. It was obtained along with other birds by Mr. Clarence Bartlett, at Mr. Kappler's plantation on the Maroni River, Surinam, in 1866. It is rather a strongly built species, appearing to agree better with Hete-rocnemis than with any other genus, the divisions of the anterior scutes of the tarsus being quite obsolete. There are no traces of an interscapular spot. I was at first inclined to think this might be the male of Herpsilochmus argentatus of Des Murs (3Iyrmeciza, sp. 1141 of m y Catalogue), although it has a much longer tail. But it is certainly different from Heterocnemis albiventris of Pelzeln (Orn. Bras. p. 161), which Pelzeln supposes to be, and which probably is, the male of the bird in question. 6. CONOPOPHAGA GUTTURALIS. Supra brunnescenti-olivacea, dorsi plumis quibusdam vix conspicue nigro marginatis : fasciculo postoculari albo : capite toto et corpore subtus ad imum pectus castaneis, plaga in gutture medio alba : ventre medio schistaceo, lateraliter olivaceo per-fuso : rostro superiore nigro, inferiore flavo : pedibus corylinis : long, tota 4-5, alee 2*8, caudce 1*6, tarsi 1*1, rostri a rictu 0*8. Hab. in Nov. Granada int. I have a single "Bogota" skin of this well-marked species, purchased of Mr. S. Stevens. In general aspect it comes nearest to G. cucullata, mihi (P. Z. S. 1856, p. 29, t. 119), which has a somewhat similar guttural spot; but that species has no postocular tuft, and a yellow bill. The present species has a white postocular tuft, as in C. aurita, and belongs to the first section of the genus as arranged P. Z. S. 1858, p. 284. When I published my Catalogue of American Birds in 1862, my collection of Formicariidae consisted of 280 skins referable to 145 different species. I have since added to it 101 skins, and have now 381 specimens belonging to 178 different species. The new species added since the catalogue was issued are:- I. THAMNOPHILIN^E. 1. Thamnophilus hollandi, Lawr., ex Nicaragua. 2. T. melanurus, Gould, ex Peruv. orient. 3. T. borbee, Pelz., ex fl. Madeira. 4. T. cinereoniger, Pelz., ex Rio Negro. 5. T. luctuosus, Licht., ex Para. 6. T. tschudii, Pelz., ex fl. Madeira. 7. T. murinus, Sclater, ex Rio Negro. 8. T. nigriceps, Sclater, ex Nov. Granada int. 9. T. tenuipunctatus, Lafr., ex iEquat. et Nov. Granada. 10. T. albicans (Lafr.), ex Nov. Granada int. 11. T. argentinus, Cab., ex rep. Argentina. |