. The structure and classification of birds . Fig. 121.—Skull of Podargus (aftek Huxlet).AS IN Fig. 118. Letters 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 behmd 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 On some Points in the Anatomy of St
. The structure and classification of birds . Fig. 121.—Skull of Podargus (aftek Huxlet).AS IN Fig. 118. Letters 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 behmd 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 On some Points in the Anatomy of Steatomis, P. Z. S. 1873, p. 526. On the Osteology of Steatornis caripensis, ibid. 1889, p. 161. CAPRIMULGI 241 efctOthmoids sure continued on to the quadrato-jugal bar by adistinct ossified os uncinatum,, as in Todus, Scythrops,Musopb-agidse, Piaya cay ana, Cariama, and relations between the procoracoid and the clavicle varysomewhat. In Podargus the process is large and reaches. Fig. 122.—SteknumOF Caprimulgus(aftek Sclater). Fig. 123.—Sternum ovPodargus (afterSolatee). Fig. 124.—SternumOF Nyctibius (afterSclater). the clavicle ; it is small and does not in Steatornis andCaprimulgus. The number of cervical vertehrm varies from thirteen(Chordeiles) to fifteen (Steatornis). Paeker 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 dorsalvertebrsB 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 ^gotheles, and is doubly not(3hed on each side E 242 STRUCTURE AND CLASSIFICATION OF BIRDS in Podargus. The spina externa is developed and slightlybifurcate in Steatornis. There is no spina interna.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
