Zoological Society. ^7 



rounding the base ; upper surface bronzy green ; tail-coverts and 

 central tail-feathers greenish bronze ; lateral tail-feathers brownish 

 black ; wings purplish brown ; under surface hke the upper, but less 

 brilliant ; centre of abdomen and under tail-coverts grey, the centre 

 of the latter bronzy green. 



Total length, 3f inches; bill, f; wing, 2^ ; tail, \^. 



Hah. New Grenada. 



Remark. — About the size of T. albirostris. 



Fhaethornis griseogularis. 



Head, upper surface and wing-coverts bronzy brown ; upper tail- 

 coverts rufous ; ear-coverts blackish brown ; wings purple brown ; 

 base of the tail dark brown, the apical third of the two central feathers 

 dark grey, tipped with white, the apical third of the next feather on 

 each side grey ou the inner web, buif on the outer web, and tipped 

 with white ; the three lateral feathers on each side tipped vrith buff; 

 imder surface sandy buff, with a wash of dull grey down the chin and 

 a crescent of black across the breast ; upper mandible black ; basal 

 two-thirds of the under mandible yellow, apical third blackish brown ; 

 feet yellow. 



Total length, 3f inches ; bUl, 1 ; vnng, \\ ; tail, If • 



Hab. Columbia. 



Remark. — Nearly allied to P. Eremita and P. pygmcea, but dif- 

 fering from them in being of a larger size, in the total absence of any 

 crescentic black mark on the chest, in having the throat clouded with 

 dark grey instead of buff, and the two central tail-feathers tipped 

 with grey and their shafts black. 



3. Note on the Suborbital Gland of the Nylghau. 

 By H. N. Turner, Esq., Jun. 



Among the cranial characters of the genus Portax I have adduced 

 the want of a suborbital depression, and the existence of a smooth 

 hne running along the surface of the bone ; and as I had observed 

 appearances of a suborbital sinus in the living animal, which I could 

 not detect in the dried specimens, I felt much interested in the exa- 

 mination of the parts in one that recently died in the Gardens, and 

 which Mr. Mitchell kindly forwarded to me for dissection. 



Externally there is a slight pit immediately in front of the orbit, 

 and anteriorly to it a small longitudinal fold of the skin, in the middle 

 of which is a Kttle round pore, through which exudes a yellowish 

 secretion, furnished by a gland placed just underneath. The gland 

 itself is slightly larger than a hazel-nut, and is laid upon the surface 

 of the bone without any fossa to receive it, but is firmly attached to 

 the smooth line before observed. The tendo ocuh, and a few fibres 

 of the orbicularis palpebrarum are attached to it. 



The small pit immediately in front of the orbit is merely the space 

 below the tendo ocuh, between the gland and the rim of the orbit. 

 In the Nylghau, the existence of a " lacrymal sinus" has usually 

 been acknowledged ; but it affords a good example of the uicertitude 

 with which we can ever deny that it exists m a species of which fresh 



