. The structure and classification of birds . ypes as Pterocles, Coracopsis ohscura, {not in C. nigra), Psittaculapasxerina, Machcerhamphus Andersoni, Heliodilus, Caprimulgus, Phaethoncandidus {not P. ruhricauda), and Fregata minor. These instances are takenfrom the osteological plates illustrating MM. Gkandidier and Milne-EdwaedssHistoire NatwelU de Madagascar. ^ For muscular anatomy of LaridiB see Giebel, Beitriige zur Anatomied. Moven, &o., Zeitschri /. d. ges. Naturw. a. (1857), p. 20; Beddaed, AContribution to the Knowledge of the Anatomy of Bhynchops, P. Z. S. 189C,p. 299. 352 STRUCTURE
. The structure and classification of birds . ypes as Pterocles, Coracopsis ohscura, {not in C. nigra), Psittaculapasxerina, Machcerhamphus Andersoni, Heliodilus, Caprimulgus, Phaethoncandidus {not P. ruhricauda), and Fregata minor. These instances are takenfrom the osteological plates illustrating MM. Gkandidier and Milne-EdwaedssHistoire NatwelU de Madagascar. ^ For muscular anatomy of LaridiB see Giebel, Beitriige zur Anatomied. Moven, &o., Zeitschri /. d. ges. Naturw. a. (1857), p. 20; Beddaed, AContribution to the Knowledge of the Anatomy of Bhynchops, P. Z. S. 189C,p. 299. 352 STRUCTURE AND CLASSIFICATION OF BIRDS those of other Hmicoline bir<5s, but are apt to be a Httle morecompUcated. In Larus argentatus, of which the tendons arerepresented in the annexed cut, the anterior stronger branchof the brevis tendon gives off a forwards and downwards shpto the extensors of the fore arm, from which arises the usualconnection with the longus tendon. There is a second con-nection between the two tendons. At the origin of the. Fig. 171.—Tensoees Patagii ojj HliyncJiops (afteb Beddakd). ,lt tensor longus ; t,, tensor brevis; B, wristward slip ; F^ pfttagial fan ;A, tendons to ulnar side of arm, patagial fan is a bony nodule, as in the petrel. The tensorlongus tendon also gives off a slip (A, fig. 172) to the insideof fore arm which is also present in the auks {) InBhynchops (fig. 171, A) there are two such tendons. Lestris antarotica, Sterna, a,xid Larus marinus (accordingto Furbeingees figure, PI. xix.) are much the same, but arewithout the additional slips A and B. Of these A is presentin Bissa tridactijla. The expansor sccundariorum is frequently absent, but it LIMIOOL^ 353 is present in Larus argentatus, marinus, and glaucus, notin fuscus. It is absent in Sterna and Lestris; present inAnous ; absent again in Bhynchops. The biceps is peculiar in some members of this Larus, Sterna, and Anous the biceps has, as usual, thetwo heads, humeral and
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
