. The structure and classification of birds . FIG. 121.—SKULL OF Podargus (AFTER HUXLEY). LETTERSAS IN FK;. 118. maxillo-palatines are completely fused across the middleline, the skull being desmognathous. The palatines also intheir middle part meet across the middle line. The vomeris divided into two parts, one lying behind the other. Theanterior part is small, like the posterior part; they bothmeasure mm. The posterior vomer is probably theequivalent of the medio-palatine of Caprimulgus and otherbirds. The basipterygoid processes are well developed. The 1 On some Points in the Anatomy of
. The structure and classification of birds . FIG. 121.—SKULL OF Podargus (AFTER HUXLEY). LETTERSAS IN FK;. 118. maxillo-palatines are completely fused across the middleline, the skull being desmognathous. The palatines also intheir middle part meet across the middle line. The vomeris divided into two parts, one lying behind the other. Theanterior part is small, like the posterior part; they bothmeasure mm. The posterior vomer is probably theequivalent of the medio-palatine of Caprimulgus and otherbirds. The basipterygoid processes are well developed. The 1 On some Points in the Anatomy of Stcatornis, P. Z. S. 1873, p. On the Osteology of Steatornis caripensis? ibid. 1889, p. 161. CAFRIMULGI 241 ectethmoids are continued on to the quadrato-jugal bar by adistinct ossified ox nin-inatum, as in Todus, Scythrops,Musophagida?, Piaya cay ana, Cariama, and relations between the procoracoid and the clavicle varysomewhat. In Podargus the process is large and reaches. FIG. 122.—STERNUMOF Caprimiilr/us(AFTER SCLATER). Fra. 123.—STERNUM OFPodargus (AFTERSCLATER). FIG. 124.—STERNUMOF Nyctibius (AFTERSCLATER). the clavicle ; it is small and does not in Steatornis andCaprimulgus. The number of cervical vertebra varies from thirteen(Cliordeiles) to fifteen (Steatornis). PARKER has commentedupon the fact that in Steatornis the atlas, instead of being,as is the rule among birds presumably allied to it, perforatedbelow for the reception of the odontoid process, is merelydeeply notched for the same. In Steatornis the dorsalvertebra3 are opisthoccelous, as among the parrots aloneamong probable allies. It is the rule among the Caprimulgifor four ribs to reach the sternum. The sternum itself isone-notched on each side in Steatornis, &c. It has fourforamina in zEgotlieles, and is doubly notched on each side R 242 STRUCTURE AND CLASSIFICATION OF BIRDS in Podargus. The spina externa is developed and slightlybifurcate in Steatornis. There is no spina inte
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
