262 Eowın Cuarın Starks, The Osteology of Dallia pectoralis. 
vertebrae assisting to support caudal fin, and not anchylosed to 
centra; air-bladder small and connected to the oesophagus by pneumatic 
duet; ventrals few rayed, abdominal placed near anal; dorsal and 
anal without spines, placed far back and opposite to each other 
caudal and pectoral rounded in outline, and without outer angles. 
Definition of order. 
The order Xenomi may be thus defined: Soft rayed fishes without 
a mesocoracoid nor modified anterior vertebrae; coracoids coalesced 
and cartilaginous; actinosts represented by a longitudinally divided 
and distally fringed cartilaginous plate. 
& 
a - — An in ch 1 eh A er et Pe 
