170 



" In the trachea of this species, we have an additional instance of 

 the lesemblance between the structure of the Crocodile and ihat of 

 Birds, It is folded on entering the chest likę that of the Demoiselle, 

 Ardea Virgn, Linn., as regards the extent of the loop, which is, how- 

 ever, di.sposed on a horizontai instead of a vertical plane, inciining 

 fiist to the left side, then turning towards the right, and ascending 

 for the extent of 3 inches, vvhere it divides; the bronchice descend- 

 ing to the right of the loop, and separating on a level with the lower 

 part of it to pass to their respective lungs. 



"The ovaries formed two thin gvanular patches, of a gray colour, 

 attached, likę the ovary of the common Foįvl, to the sides of the vena 

 cava. The oviducts vvere of a flaltened puckered form, not unlike a 

 tape-worm ; they terminated in the genito-urinary cavity." 



Mr.Vigors e.\hibited the .si\th and lašt portion of the species com- 

 prising the ' Century of Birds from the Himalayan Mountains,' drawn 

 and lithographed by Mr. and Mrs. Gould, the publication of vvhich 

 vvas novv dravving to a close. Aniong them \vere the foUovving species 

 apparently nevv to science; the first of which exhibited a striking 

 diversity of form among the Eagles, vvhich vvas characterized as fol- 

 lovvs under the generic name of 



H.«:matornis. 

 Rostrum snbforte, satis elongatum ; mandibula superiori ad basin 

 rectS, ad apicem valdė curvala ; narilus ovalibus obliaus in cera 

 positis. 



AI(X longse, subrotundatag ; remige prima subbrevi, secunda tertia- 

 que longioribus, cjuarta quintaque itrh aequalibus longissimis, cseteris 

 gradatim decrescentibus. 



Pedes subdebiles, subelongati ; tarsis rugosis squamatim reticulatis; 

 digitis subbrevibus, reticulatis ; unguibus fortibus. 

 Cauda satis longa, subrotundata. 



H«MAT0uxis UNDULATUS. Hceniat. suprd infense brunneus, subtus 

 brunnescenti-riifus; pectore ftisco undulatim fascialo ; abdomine 

 oceltis albis brunneo circumdatis noialo; capite cristato caudague 

 vigro-brunneis, illius plumis ad basin albis, ad apicem rufescenti 

 viarginatis, hdcfascid kita in medio, marginegue gj-acili ad apicem 

 rufescenti albidis, notata ; regione carpali ocellis albis maculata. 

 Longitudo 2 ped. 7 unc. 



This group vvas observed to bear a near affinity to the genus Pan- 

 dion in the shape of the bill, vvings, and the rugose reticulated scales 

 of tlie tarsi, biit to differ from it i n the comparalive length and vveak- 

 uess of the legs and clavvs, as well as in having the nails grooved 

 iinderneath, and not convex, as in the latter group. To this genus 

 belongs the Falco Bachą, Lath.* of Africa, and the Manilla bird lately 

 described in the ' Proceedings' of the Committee (page 96) under 



* Mr. Vigors cxpressed his doubts vvhether the Falco Bachą, Lath., and 

 Falco Bido, Horsf., vvere the šame species, although they vvere generally 

 supposed to be identical. He had not the opportunity of examining a suf- 

 ficient numbcr of African specimcns to dctern)ine the point. 



