Aspasma ; Macrostoma. 59 
caudal by membrane, not leaving free caudal peduncle; pectoral small, rounded 
posteriorly ; disk rounded, its edge fringed ; caudal rather smail, rounded posteriorly, 
continuous with both dorsal and anal with a deep notch between. 
Color in formalin deep reddish orange above, paler below; a rather broad, 
pinkish line runs from near end of maxillary to cheek. Dorsal, anal and caudal fins 
deep reddish orange ; pectoral and ventral much paler ; no marking on caudal. 
Described and figured from the type 6-4 cm. long as measured to tip of caudal, 
collected in a tide-pool of Jogashima, an island near Misaki, Sagami, No. 1781, 
Scienee College Museum, Tokyo. 
XXVIII. Macrostoma japonicum (Tanaka), (Myctophide.) 
Plate XV, fig. 51. 
Okuchi-iwashi. 
Macrostoma quercinum japonicum Tanaka, Journ, Coll. Sci. Tokyo, XXIII, Art. 
13, July 28, 1908, p. 5, pl. I, fig. 3 ; Misaki, Sagami. 
Habitat.—deep water ; Sagami Sea. 


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