rest of fish with age and ending in median filament behind; least 
depth of caudal peduncle 2 1/8 to 2 \ in head; pectoral 2 7/8 to 3 
in fish without caudal, rays 15 ; ventral rays I, 5> fin 3 3 1/8 
in fish without caudal. 
Pale brown, whitish on under surface of head and belly 
Top of head with numerous, small, close set slightly darker crowded spots. 
Along back 7 darker brown blotches, with 5 larger and brighter axial 
brown blotches on side, last small and at caudal base medially. Each 
scale on side of body with slightly darker basal spot. Dark brown shade 
on cheek below eye. Side of head, prepectoral region and whole side 
ob body more or less, with small round pearl blue spots, those on head 
and anterior part of body little ocellated with narrow brown line. Fins 
all gray white, with dark blotches on back reflected on bases of dorsals. 
Iris gray white. 
Philippines. A handsome ornate little fish, remarkable not 
only for its long preopercular spine but its filamentous fins as well. 
U. S. N. M., No. 99047i Nasapit, tide pool, Mindanao, August 
1, 1907* Length 42 mm. 
Also the following 
Eighty examples, same data. Length 21 to 40 mm 
