PROCEEDINGS OF THE NATIONAL MUSEUM. 



Deiitary without the typical cavity into which the meckeliau cartilage 

 and end of articular runs anteriorly. 



Angular present. 



Coronoid bone present. 



Post temporal not especially firmly attached. Upper limb attached 

 to base of epiotic process, the outer side rather loosely to pterotic proc- 

 ess. The thin, flat lower limb attached to process from opisthotic by 

 a short ligament. 



Supraclavicle very short, its upper end scarcely reaching above 

 upper end of clavicle. 



Hypercoracoid placed high on clavicle. Its foramen as described 

 under Mugil. 



Hypercoracoid at ui)per end more broadly joined to clavicle than that 

 of Mugil. Its lower end attached to a high median vertical wing- 

 between inner and outer edge of clavicle. 



Actinosts very short, two joined to each the hypocoracoid and hyper- 

 coracoid. Two or three upper rays of pectoral tin working directly on 

 hypercoracoid. 



Postclavicle consisting of a superior and inferior part. 



Pelvic bones higher than wide. A spinelike process sent upward 

 from the outer edge of each of them. 



Interneurals of spinous dorsal compressed into thin plates without 

 descending spines between the neural spines. First and second inter- 

 neurals not fused. 



Interneurals of soft dorsal with spines between the neural spines as 

 usual. In front of them an auxiliary interneural is attached. 



Front of anal fin free under abdominal cavity. 



Interheemals subequal, growing slightly longer anteriorly. The first 

 not differentiated. 



Three basibranchials present, united to each other by sutures. 



Suspensory pharyngeaP of first branchial arch present. 



Second arch^ with a small toothed superior pharyngeal. 



Superior pharyngeals of third and fourth arches fused into a large ellip- 

 tical bone. A transverse groove or suture is present, probably indicat- 

 ing separate pharyngeals of the third and fourth arches in the young. 



Hyoid apparatus typical. 



Branchiostegals six; all attached to outer surface of hyoid. 



Nasals present; thin and short. 



Suborbital ring apparently not complete, one bone besides preorbital 

 being at anterior end and one at posterior, while directly beneath eye 

 there are no. bones in evidence. 



Premaxillary wide at its lower end, while maxillary is subequal 

 throughout its length, which is a transposition of the usual condition. 



Maxillary without supplemental bone. 



1 Here so called because its function is usually that of suspending the branchial 

 arches from the cranium. It is typically styloform and toothless. 

 ' One side only of branchial arches considered in describing superior pharyngeals. 



