170 



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

 the resemblance between the structure of the Crocodile and that of 

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

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

 ever, disposed on a horizontal instead of a vertical plane, inclining 

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

 for the extent of 3 inches, where it divides ; the bronchia 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 granular patches, of a gray colour, 

 attached, like the ovary of the common Fowl, to the sides of the vena 

 cava. The oviducts were of a flattened puckered form, not unlike a 

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



Mr. Vigors exhibited the sixth and last 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 which 

 was now drawing to a close. Among them were the following species 

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

 diversity of form among the Eagles, which was characterized as fol- 

 lows under the generic name of 



HjEMATORNIS. 



Rostrum subforte, satis elongatum ; mandibuld superiori ad basin 

 recta, ad apicem valde curvata ; naribus ovalibus oblique in cera 

 positis. 



Alee longre, subrotundatre; remige prima subbrevi, secunda tertia- 

 que longioribus, quarta quintaque fere aequalibus longissimis, ere tens 

 gradatim decrescentibus. 



Pedes subdebiles, subelongati ; tarsis rugosis squamatim reticularis; 

 digitis subbrevibus, reticularis ; unguibus fortibus. 

 Cauda saris longa, subrotundata. 



Hamatoknis undulatus. Hcemat. supra, intense brunneus, subtus 

 brunnescenti-rufus; pectore fusco undulatim fasciato ; abdomine 

 ocellis albis brunneo circumdatis noiato; capite cristato caudaque 

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

 marginatis, hdc fascia lata in medio, margineque gracili ad apicem 

 rufescenti albidis, notata ; regione carpali ocellis albis maculaia, 

 Longitudo 2 ped. 7 unc. 



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

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

 of the tarsi, but to differ from it in the comparative length and weak- 

 ness of the legs and claws, as well as in having the nails grooved 

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

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

 described in the 'Proceedings' of the Committee (page 9G) under 



* Mr. Vigors expressed his doubts whether the Falco Bacha, Lath., and 

 Falco Bido, Horsf., were the same species, although they were generally 

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

 ficient number of African specimens to determine the point. 



