NO. 1186. BEL A TIONSniP OF DINOLESTES LE WINI—STABKS. 119 



Branchiostegals seven, four being borne by ceratohyal and three by 

 epiliyal; tlie tliree anterior ones attached to inner surface of byoid 

 arch, 



Glossohyal wide, flat, or slightly concave above. 



Urohyal elongate, thin, without double heel below, except at extreme 

 anterior end. 



Basibranchials three — the first not supporting any arch, the second 

 supporting the first arch, and to the third the second and third arches 

 are joined. Ko ossified basibranchial to fourth arch. 



Epibranchials of third arch meet behind last basibranchial; epi- 

 branchials of fourth arch absent. 



Suspensory pharyngeals present on first arch. 



Superior pharyngeals three in number, that is, on second, third, and 

 fourth arches ; the second largest, and with the third forming an elon- 

 gate patch. 



JFirst two interspinal rays of dorsal and of anal not coalesced. None 

 of the interspinals interposed between neural or h?emal spines. 



The interval between first and second dorsals occupied by two free 

 auxiliary iuterneural spines. 



First interhaemal spine not enlarged or in any way differentiated from 

 its fellows. Interhsemals equally graduated from behind forward. 



Ventral fins truly thoracic. The pelvic girdle long and tapering to a 

 slender point, which is interi^osed between the clavicles above their 

 union. 



The vertebral column composed of 10 abdominal and 16 caudal, 

 which, with the usual hypural, number 27 vertebrne. 



Superior zygapophyses both posteriorly and anteriorly present, but 

 small, as is usual in the Percoid fishes. 



Inferior zygapophyses well developed posteriorly near middle of col- 

 umn ; anteriorly scarcely discernible. 



Parapophyses developed on fourth and succeeding abdominal verte- 

 briie, growing larger posteriorly; the last pair connected near their 

 bases by a bridge of bone. 



Hypural assisted in supporting caudal fin by spines from, two preced- 

 ing vertebrae. 



Kibs and ei)ipleurals typical. 



