. The structure and classification of birds . denalloop is double; thegreater part of the in-testine is drawn out intoa considerable numberof straightish loops. As to muscularauntomij, the greatFIG. 210.—INTESTINES OF Fulmar us glacia- pectoral is divisible into two layers by an inter-posed tendon, as in storksand Steganopodes. But in Lams, according to FURBRINGER(and in Podica also), the same division occurs, which tendsto lessen the differences between the Tubinares and theLaridse, so insisted upon by GARROD, FORBES, and someothers. The tensores patagii in the Tubinares are com-plicated, but
. The structure and classification of birds . denalloop is double; thegreater part of the in-testine is drawn out intoa considerable numberof straightish loops. As to muscularauntomij, the greatFIG. 210.—INTESTINES OF Fulmar us glacia- pectoral is divisible into two layers by an inter-posed tendon, as in storksand Steganopodes. But in Lams, according to FURBRINGER(and in Podica also), the same division occurs, which tendsto lessen the differences between the Tubinares and theLaridse, so insisted upon by GARROD, FORBES, and someothers. The tensores patagii in the Tubinares are com-plicated, but not in all the genera. In the Oceanitidte theyare simplest. In these petrels the tensor brevis is a simpletendon. In Pelecanoides, and in some others, there is theadditional complication that the tendon bifurcates near toits attachment on the extensor tendon, and gives off ananterior slip inserted more wristwards. In Prion affairsare still further complicated by the metamorphosis intotendon of the whole of the extensor inetacarpi radialix. Us (AFTER MITCHELL)..r, short-circuiting vessel divided. TUBINARES 447 superficialis. In (Extrcluta brevirostris we first meet witha recurrent slip going to the longus tendon and arisingfrom the brevis in front of the termination of its anteriorbranch. The more typical tubinarian arrangement is seenin (Estrelata Lessoni. We find here the characteristicossicle of the tendon of the brevis which is found inso many Tubinares, and which has been held by some tobe a character of much systematic importance in differen-tiating the group—a character which FURBRINGER thinkshas been overvalued. ! From this ossicle spring someof the fibres of the extensor muscle of the fore arm ; it isalso the starting point of the recurrent tendinous fibres,which unite the brevis and longus tendons; these tendonstire, moreover, in close apposition for nearly the whole oftheir course—itself a characteristic feature of the Ossifraga and in some other g
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
