31-i Annals of the Carnegie Museum. 



From its hidden position, however, this pneumatic foramen is not 

 likely to be observed upon casual observation. 



The sternal expansion of the coracoid is very broad, being com- 

 pressed in the antero posterior direction with a very large facet upon 

 its hinder aspect just as we find it in Bemicla. The " lateral process," 

 however, is rather more conspicuous in the Flamingo than it is in the 

 Goose, and the internal process is at the same time more pointed. The 

 summit of the bone is tuberous and enlarged, and the shallow glenoid 

 cavity extensive. A deep, circumscribed fossa is seen for the accom- 

 modation of the head of the scapula — a character which is also 

 present in the coracoid of Benncla. Minute spinous processes are 

 found upon the lower interno-mesial border of the shaft, which are 

 but very faintly developed in Bcndcla, though in the latter, on the 

 posterior aspect of the bone, the muscular lines of which these pro- 

 cesses are the mesial extension, are very much better marked than they 

 are in the Flamingo. Plni'iucoptents possesses a comparatively long 

 scapula of the usual ornithic pattern. Its clavicular apophysis is pro- 

 duced well forwards, and the blade of the bone is curved in both ver- 

 tical and lateral directions. Posteriorly it is gradually drawn out to 

 a point, thus differing from the scapula of Bemicla wherein the hinder 

 end of the bone is squarely truncated, or from Flcgadis, wherein it is 

 seen to be obliquely truncated. Measuring the chord extending from 

 the apex of its clavicular process to the posterior tip of the bone 

 we find it to be 9.4 cm. Unfortunately, in the sole specimen I 

 have in hand for description, the ossifications of the air-passages, as 

 the trachea, etc , are all missing, not having been preserved by the 

 person who prepared it, therefore I can give no account of them at 

 this writing. The bones of the hyoidean apparatus have also been 

 lost, as have likewise the ossifications of the organs of special sense. 



Of the Appendicular Skeleton. — Here too, apparently, a {&\n of the 

 small bones are missing, having been lost at the same time with the 

 others mentioned in the last paragraph — for I have no first metatarsals, 

 which the Flamingo undoubtedly possesses, and the ends of the finger- 

 joints of the pollices appear to terminate in minute articular surfaces, 

 leading one to suppose that those joints supported terminal claws. 

 As far as my material goes the skeleton of the limbs offers the follow- 

 ing bones for examination. In \.\\q. pectoral extremity — a humerus, the 

 radius and ulna; two free segments in the carpus; the carpo-meta- 

 tarsus ; the phalanx of pollex ; the two joints of index ; and the very 



