GLOSSABY. 323 



Glabrous Smooth. 



Gonys The middle line of the lower mandible. 



Gorget Throat patch of peculiar feathers. 



Graduated Said of a bird's tail when the outer feathers are 



regularly shorter. 



Granulate Rough with small prominences. 

 Gular Pertaining to the gula, or upper fore-neck. 

 Guttate With rounded, drop-shaped spots. 

 Hallux The great toe in birds, the hind toe. 

 Height Vertical diameter practically the same as depth. 

 Heterocercal Said of the tail of a fish, when unequal the back- 

 bone evidently running into the upper lobe. 

 Hirsute With shaggy hairs. 

 Homocercal Said of the tail of a fish when not evidently unequal ; 



the back-bone apparently stopping at the middle of the base 



of the caudal fin. 



Humerus Bone of the upper arm. 

 Hyoid Pertaining to the tongue. 

 Hypognathous Having the lower mandible longer than the upper, 



as in the Black Skimmer. 



Imbricate Overlapping, like shingles on a roof. 

 Imperforate Not pierced through. 

 Inarticulate Not jointed. 

 Incisors The front or cutting teeth. 

 Interfemoral membrane The membrane connecting the posterior 



limbs of a bat. 

 Intermaxillaries The bones between the superior maxillaries, 



forming the middle of the front part of the upper jaw, in 



fishes : the premaxillaries. 

 Jugular Pertaining to the lower throat said of the ventral fins, 



when placed in advance of the attachment of the pectorals. 

 Keeled See Garinate. 



Labials Plates forming the lip of a serpent. 

 Lamella Plate-like processes inside of the bill of a duck. 

 Lamellate Said of a bill provided with lamellae, as in a duck. 

 Lateral To or towards the side. 

 Lateral line A series of muciferous tubes , forming a raised line 



along the sides of a fish. 

 Laterally Sidewise. 

 Locate Furnished with membranous flaps said of the toes of birds. 



