20 Annals of the Carnegie Museum. 



lateral aspect we find the rather extensive obturator space separated by 

 bone from the foramen of the same name. Behind, the post-pubic 

 style is long drawn out and drooping upon either side, and the pos- 

 terior foot of the ischium, which is applied to the superior margin of 

 the same, is notably long and slender. Upon the nether side we find 

 but one pair of the lateral processes of the sacral vertebrae, thrown 

 out, modified, and lengthened to act as braces opposite the acetabulae. 

 There appear to be seven free vertebrae in the skeleton of the tail, and 

 to these is to be added a squarish and rather large pygostyle. 



The stcnuDii of P. lobatus (as well as other species of the genus) 

 has essentially the same pattern as the sternum of any typical Plover, 

 as for instance C. sgi/ataro/a. Its carina is ample, with the carinal 

 angle in front rather prominent and jutting, which in some degree is 

 caused by the concavity of the anterior border of the keel. Posteriorly 

 the sternal body is twice notched upon either side, while the ma- 

 nubrium is small, and the costal processes triangular, broadish, but 

 not particularly high. 



Os furcula of the shoulder-girdle is of the U-pattern, being much 

 bowed to the front, and with a small hypocleidium below. Either free 

 clavicular extremity develops near its pointed end upon its outer as- 

 pect a shoulder, supporting a small .facet for articulation with the head 

 of the corresponding coracoid. When articulated /;/ situ, this pointed 

 extremity rides well over the clavicular process of the scapula, being 

 at the same time in contact with it. 



The coracoids are short, but not especially stout, the shaft being 

 straight with its sternal extremity much expanded. Here we find three 

 processes, so often to be observed among the water birds at large. Of 

 these, one is at either extremity of the sternal facet of articulation, and 

 the other is a conspicuous lateral one, triangular, and lamelliform, 

 being almost exactly as we find it in Aphriza and other types. 



The blade of the scapula is somewhat expanded for its posterior moiety, 

 and its apex is truncated obliquely from within outwards and back- 

 wards. Its way of articulation with the os furcula has already been 

 described above. 



Phalaropes have non-pneumatic limb-bones throughout. The hu- 

 merus is long, and its shaft is nearly straight. At the i)roximal end 

 the ulnar crest is prominent and overshadows an extensive concavity ; 

 the radial crest is not nearly so well developed. Distally above the 

 oblique tubercle an epicondylar process juts out, and indeed the whole 



