﻿46 



The Philippine Journal of Science 



1914 



ulate distally with the ceratobranchials (63) of the 2d bran- 

 chial arch and with the ventrolateral region of the basioccipital 

 (69) and the superior pharyngeals (23 2 ) of the 2d branchial 

 arch internally and ventrally, respectively. Because of being 



65 



17 



17 



17 



Fig. 6. Glossohyal (65) ; basibranchials (17) of the 1st, 2d, and 3 branchial arches from th« 

 left side ; the basibranchial of the 2d arch in detail. X 2. 



extended, the ventral instead of the dorsal surface is shown. 

 The dorsal surface is concave, with the outside of the curve, the 

 region of the epicondyle, lying anteriorly and dorsad of the cera- 

 tobranchials (63) and the anterior portion of the inferior pha- 

 ryngeals (25). The proximal or internal condyle or that which 

 articulates with the basioccipital (69) is much larger than that 

 which articulates with the ceratobranchials (63) of the 2d 

 branchial arch. 



Epibranchials of the 3d branchial arch. These bones also 

 are seen from the ventral side. The articulations distally are 

 with the ceratobranchials of the 3d branchial arch and proxi- 

 mally with the superior pharyngeals (23 3 ) of the 3d arch. The 

 two epicondyles shown at the top in Plate XVI lie dorsad in posi- 

 tion against the anterior surface of the epibranchials of the 4th 

 arch. The large condyle articulates with the 

 dorsal surface of the superior pharyngeals (23 4 ) 

 of the 4th branchial arch. 



The epibranchials are seen in Plates XV and 

 XVI. 



Glossohyal (65). The more solid central por- 

 tion of the glossohyal is shown articulated with 

 the anterior end of the first basibranchial (17). 

 The complete outline is shown in text fig. 7, the 

 central, more solid portion being indicated. The 

 glossohyal in small specimens is entirely carti- 

 laginous, with the anterior and lateral margins 

 much softer than the central portion. The draw- 

 ing is the actual size of the glossohyal from a different fish from 

 that of Plate XVI. In Plate XV the glossohyal has been re- 

 moved. (Plate XVI.) 



This number (133) in Plate VI, fig. 1, and in Plate XV in- 



Fio. 7. Glossohyal 

 (66), dorsal view, 

 showing the more 

 solid central por- 

 tion. X 1.6. 



