. The structure and classification of birds . f the headsof that muscle arises from the tendinous end of the glutseusmaximus. The femorocaudal is tendinous for half its length ; its ac-cessory is a very large muscle. The ambiens in Colymbusglacialis has two heads of origin. The combined plantar tendons give off a small slip to thehallux in C. septentrionalis, as in Podicipes minor. The divers have two carotids, the more modified (cf. legformula) grebes only the left. The lobes of the liver in the Colymbi are equal, and thereis a gall bladder. The following are a few intestinal measurements:— c
. The structure and classification of birds . f the headsof that muscle arises from the tendinous end of the glutseusmaximus. The femorocaudal is tendinous for half its length ; its ac-cessory is a very large muscle. The ambiens in Colymbusglacialis has two heads of origin. The combined plantar tendons give off a small slip to thehallux in C. septentrionalis, as in Podicipes minor. The divers have two carotids, the more modified (cf. legformula) grebes only the left. The lobes of the liver in the Colymbi are equal, and thereis a gall bladder. The following are a few intestinal measurements:— c c 2 388 STRUCTURE AND CLASSIFICATION OF BIRDS s. I. Ceeca Ft. Ills. Inches i Inches Colymhus septentrionalis : 3 11 3-7 1-7,1^8 „ glaoidlis . 5 4 2-5 2 Podicipes cornuhts . 2 5 IS 1-1,1-6 „ imnor . 2 5 1-5 1-5 The cmca of C. septentrionalis are conical and saccular inform, with irregular but distinct transverse rugae. The syrinx in the divers {Colymhus septentrionalis) is notin any way remarkable in form. The last tracheal rings and.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
