102 Chasmichthys ; Heteroscymnus, 
Plate XXIX, fig. 114 is drawn from another specimen 9.5 cm. long as measured 
to tip of caudal, taken in a tide-pool at Jogashima, near Misaki, Sagami, No. 1977, 
Science College Museum, Tokyo. It has a very elongate body and is differently 
colored from the specimen above described, but the number of scales and the dark spot 
at the base of caudal are the same. ‘The species is subject to considerable variation. 
XLIV. Heteroscymnus longus, n. g.n. sp. (Euprotomicridz.) 
Plate XXVI, fig. 102, 103, 104, 105, 106 and 107. 
Kaeru-zame ({rog-shark), 
Habitat.—Sagami Sea. 
Head as measured to first gill-opening 54, height of body 5% in total length as 
measured to root of upper caudal lobe. Eye 10%, interorbital about 2, snout as 
measured from its tip to anterior rim of eye 2} in head measured as above. 
Body oblong, slightly compressed ; upper and lower outlines evenly curved, but 
the lower with stronger curvature ; caudal peduncle short, slightly depressed.. Head 

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