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KAMAKICHI KISHINOUYE : 
dorsal posterior base of the pectoral fin. Tlie upper anterior piece is lamellar, 
more or less kidney-shaped in outline, and is bent near the ventral posterior 
end. Its ventral margin concave, and the dorsal convex. The lower posterior 
piece is rather broad and lamellar at the anterior part, generally with an 
ascending pointed process, and a long styliform process behind. This lower 
piece (fig. H) has more characteristics in different forms of fishes than the 
upper. In the Scombridae the lamelliform portion is comparatively large, and 
the styliform process suddenly narrows and bends upward. In the Cybii- 
dae the styliform process is rather broad and straight, while the lamelli¬ 
form portion is rather small and flattened. In the Plecostei the lamelliform 
portion makes an angle with the styliform. In the Thunnidae the angle or 
the bent portion is raised and thick, and the styliform portion very short. In 
the Katsuwonidae the styliform portion seems as if joined to the lamelliform 
portion, at the inner side near the ventral margin. The styliform portion 
is long. 
Pelvic Girdle. 
The so-called pelvic girdle is a pair of bones united at the median line, 
imbedded free in the ventral paît of the abdominal wall. Each bone consists 
of three parts :—anterior, external portion ; anterior, internal portion ; and 
posterior styliform portion. The first named portion is largest, and serves for 
the attachment of muscles. The last two portions meet, with roughened sur¬ 
faces, their fellows of the other side. The portion of the pelvic girdle where 
the ventral fins articulate is thick and transverse. The anterior external por¬ 
tion is most well developed and most complicated. In the posterior half of 
the portion we distinguish three wings ;—external, internal, and ventral. 
In the Scombridae the pelvic girdle is quite small. The anterior external 
portion is elongated and bent upward, with its external and internal wings 
meeting in one plane. The ventral wing is short and small. The anterior 
internal portion is thin, slender, and has nearly the same length as the ventral 
wing. The posterior styliform process is also very short. In the Cybiidae the 
anterior external portion is long and straight, more or less vertical at the 
anterior part, and the cross-section of the posterior part is triradiate. The 
anterior internal portion is short and slender, about one-third of the external 
