Series Plectognathi 625 
lepis hispidus and Ceratacanthus schepfi are common species. 
In the West Indies are numerous others, Osbeckia levis and 
\ 
Fie. 515 —File-fish, Osbeckia levis (scripta). Woods Hole, Mass. 
Alutera giintheriana, largest in size, among the commonest. Both 
of these are large fishes without ventral spine. Monacanthus 
chinensis, with a great, drooping dewlap of skin behind the 
Fic. 516—The Needle-bearing File-fish, Amanses scopas of Samoa. 
ventral spine, is found on the coast of China. Of the numerous 
Japanese species, the most abundant and largest is Pseudomon- 
