620 MUSKET-HAWK—NASAL GLANDS 
bular bar, extends as a ribbon to the hyoid bone, round which it 
twists loosely ; and, being attached to its dorsal extremity, the con- 
traction of the spiral surrounding the hyoid horns protrudes them 
with great force, the extent of protrusion depending on their length. 
This is greatest in Trochilidx and Picidx, in some of which they pass 
round the head and reach forward to the nostrils. 
M. genio-glossus, a small protractor of the tongue, connecting the 
os entoglossum with the chin, but often absent. 
M. ceratoglossus, arising from the dorsal face of the ceratohyal, 
inserted by a tendon laterally on the os entoglossum, which it draws 
sideways or bends when acting jointly with its fellow. 
M. cerato-hyoideus, extending from the inner face of the ceratohyal 
to the urohyal, but often absent. 
M. hypoglossus, extending from the ventral face of the body of 
the tongue to the ventral or lateral face of the os enioglossum. 
MUSKET- or MUSQUET-HAWK (O. Fr. mousquet or mouchet), 
an old name for the cock Sparrow- HAWK, seemingly given from its 
comparatively small size (Fr. mouche, Lat. musca—a fly), and hence, 
on the invention of fire-arms, applied to one which was smaller and 
handier than the older match-lock. 
MUTTON-BIRD, a sailors’ name for at least one species of 
SHEARWATER, but especially for Puffinus brevicauda, presumably 
because. “the young are literally one mass of fat, which has a 
tallowy appearance” (Gould, Handb. B. Austral. iii. p. 462). Mr. 
Robert Elwes has given (Jbis, 1859, pp. 397-399) a remarkable 
account of one of the most frequented breeding-places of this bird 
on an island in Bass’s Strait, which, it is to be feared, no longer 
exists as such owing to the devastation wickedly carried on—nearly 
60,000 breeding birds having been taken in a single season. 
N 
NANDU, from Nhandu-guagit, given by Marcgrave and Piso as 
the Brazilian name of the RHEA, and occasionally used for that bird 
by some English writers. 
NASAL GLANDS exist pairwise in almost all Birds, and their 
tear-like secretion serves to moisten and cleanse the mucous lining 
of the nasal cavities. Each gland has a duct opening into the 
vestibulum of the nares below the nasal bone, and passing beneath 
the lacrymal bone. ‘These glands vary much in shape, size, position 
and colour, in the last respect ranging from bluish-red to red and 
