140 BLUNT-HEABED IIALFBEAK. 



to the tail; their membrane at first broader, but narrowing in 

 its progress; pectoral fins and tail round. \"entral fins small, 

 and very obscure — to be seen only in the larger specimens. 

 The colour in diflferent specimens varied greatly — from dark 

 with a tint of green, to yellowish green and cream-coloured, 

 with specks. 



