Ordo Raprorss. 
Fam. FALconipaz. 
Stirps AQuILINA. 
Genus HaMAToRNIS. 
CHARACTERES GENERICI. 
Rostrum subforte, satis elongatum ; mandibuld superiori ad basin rect&, ad apicem valdé cur- 
vaté; naribus ovalibus, oblique in cer4 positis. 
Ale \ongze, subrotundatz ; remige prima subbrevi; secunda tertiaque longioribus; quarta 
quintaque feré zqualibus, longissimis ; ceteris gradatim decrescentibus. 
Pedes subdebiles, subelongati; ‘¢arszs rugosis, squamatim reticulatis; digitis subbrevibus, 
reticulatis ; waguebus fortibus. 
Cauda satis longa, subrotundata. 
TAB. I. 
HAMATORNIS UNDULATUS. 
Hem. supra intense brunneus, subtus brunnescenti-rufus ; pectore fusco undulatim fasciato ; 
abdomine ocellis albis' brunneo circumdatis notato; capite cristato, ptils caudaque nigro- 
brunneis, wllo saturatiore, plumis criste ad basin albis ad apicem rufescenti marginatis ; 
_rectricibus fascia lata in medio, margineque gracilt ad apicem rufescenti-albidis notatis ; 
regione carpalt ocellis albis parvis maculata. 
Longitudo corporis, 2 ped. 4 une. ; ale a carpo ad apicem remigis 4te, 191; rostr,2; caude, 
123; tarsi, 4; digits medi, ungue excluso, 1%. 
Tue group which is characterized above, is at present composed of three well-defined species, according 
accurately with each other in their general structure, and differing merely in slight, but still well-marked 
modifications of specific character. From their comparative strength of body, the straight base and length- 
ened shape of the bill, and the bold habits which are known to belong to one at least of the species, they 
seem allied: to that division of the Falconide which includes the Hagles ; while some of their minuter pecu- 
liarities, particularly the rugose hexagonal scales of the acrotarsia, apparently bring them into immediate 
alliance with the Ospreys, or the genus Pandion of M. Savigny. 
__ Two specimens of the species now described have been examined ; one belonging to Mr. Gould’s original 
collection, the second to a collection lately sent to this country by Mr. Hodgson, the British Resident at Nepal. 
Both specimens correspond in their markings, but differ in size, the latter being about one fourth larger ; a 
difference which may probably be attributed to sex. In both birds the colour of the back and wings is of an 
intense brown. The head is crested ; the feathers white at the base, of a dark brown nearly approaching to 
black at the end, the hind ones being margined with a light rufous band at the apex. The wing-coverts near 
the carpal joint are deep brown marked with small white spots; the quill-feathers fuscous, darker at the apex, 
and marked with white towards the base of the interior web ; the cere, base of the beak and legs are yellow ; 
the claws black. 
The Plate represents the bird three fourths of its natural size. 
