﻿32 The Philippine Journal of Science 1914 



third of the lower part lies over or outside of the upper part 

 (77). The form is well shown in Plate X. On the right side 

 of the plate the upper part (77) and lower part lie separately. 

 On the left side of the plate the parts of the left postclavicle 

 overlie the inside of the clavicle (62), the hypercoracoid (15), 

 and the hypocoracoid (30). 



The postclavicle, upper part (77), articulates with the pos- 

 terior upper expanse of the clavicles (62), and lies almost 

 parallel with it. The lower end articulates with the lower part 

 of the postclavicle (6). This part of the postclavicle also is 

 lamellar, and the form can be readily seen in Plate X. 



On the left side of Plate X the inside of the bases of the 

 pectoral rays (29) of the left side is shown, while on the right 

 side of the plate are the pectoral rays of the right side. These 

 articulate with the actinosts (31) in each fin. In Plate I the 

 left pectoral is present. The number of rays articulating with 

 each of the actinosts may be determined from the plate. 



The pelvic rays (33) are attached to the pelvic girdle (32), 

 and are shown in Plate X and, also, in Plate I. 



The hypercoracoids (15) are somewhat roughly quadrangular 

 bones, articulating with the actinosts (31), the hypocoracoids 

 (30), and the clavicles (62). In Plate X the left is shown 

 articulated with the hypocoracoid (30) and the clavicle (62), 

 while on the right side it is isolated. Each is pierced by a 

 large foramen. The edge articulating with the actinosts (31) 

 is much thickened, while the remainder is very thin, being 

 thinnest around the foramen. The dorsal portion of the hypo- 

 coracoids extends inward at an angle to conform to the interior 

 of the clavicles (62). The left is indicated in Plate I. 



The hypocoracoids (30) are articulated with the clavicles (62) 

 anteriorly by two processes, with the two ventral actinosts (31) 

 posteriorly, and with the hypercoracoids (15) dorsally. In Plate 

 X the left hypocoracoid is seen at the left side, internally, with 

 the ventral portion of the postclavicle (6) lying over it, and 

 articulated with the hypercoracoid (15) and the clavicle (62). 

 On the right side the right hypocoracoid is shown from the 

 outside. Interiorly the ventral portion has an angular furrow, 

 at the bottom of which is the prolongation of the ventral process 

 seen at the top in the plate. The sides of the furrow are 

 lamellar. The dorsal portion is lamellar with a considerable 

 thickening at the region of articulation with the actinosts (31). 

 In Plate I the posterior and ventral portions are to be seen. 



The actinosts (31) are 4 in number on each side. The most 



