BULLETIN OF THE UNITED STATES FISH COMMISSION. 
514 
Mouth semicircular, its width equal to distance between tip of snout and posterior border of eye, 
distance between edge of mouth and tip of snout 1.7 times width of mouth, ora little more than 
distance between nostrils; upper teeth serrated from base to tips, the lower ones smooth on base, upper 
parts weakly serrated; teeth of upper jaw a little broader at base than they are high, the cutting edges 
of median ones straight; lateral teeth with edges slightly concave, concavity of outer edges deepening 
somewhat as they approach corners of mouth; teeth not pointing outward in either jaw, those of 
lower jaw much more slender than those above, the bases somewhat wider than height of teeth; 
cutting edges concave. There are 30 rows on each jaw, those of the two median rows minute or 
absent. Tip of pectoral tin acutely rounded; first dorsal broadly rounded; second dorsal slightly 
smaller than anal; caudal very large, under side of upper lobe with a deep notch; free edges of dorsals, 
pectorals, and ventrals concave; c.laspers of male 1.5 times as long as ventral fin is high. 
In life, bluish slate color, somewhat lighter below; first dorsal broadly tipped with lighter color; 
second dorsal, pectorals, ventrals, and caudal with slightly darker tips. In alcohol the tins and upper 
parts of the body are rather indistinctly spotted with a darker shade than that of body; spots of body 
somewhat larger than eye, the spaces between them somewhat wider than diameters of spots; spots on 
tins smaller and more closely crowded. 
The following measurements were taken before the specimen, a male, was preserved: Total length 
213 centimeters; tip of snout to dorsal 71; to eye 17.8; to first gill-opening 40.5; to pectoral 48; 
length of gill area 10; height of first gill-slit 7.5; of second 8.2; of third 8.8; of fourth 8.2; of fifth 
5.7; length of pectoral 39; base of pectoral 14; free edge of pectoral 37; axil of pectoral to ventral 
47; anterior margin of ventral 14; free margin of ventral 12; base of ventral 12.7; axil of ventral to 
front of anal 17.8; base of anal 9; anterior margin of anal 12.7; anal to caudal pit 8.2; base of dorsal 
21; anterior margin of dorsal 32; free edge of dorsal 23.5; first to second dorsal 47; base of second dorsal 
6.3; front margin of second dorsal 9; second dorsal to caudal pit 12.7; upper lobe of caudal 59.5; lower 
lobe of caudal 30; spread of caudal 61; girth at front of ventrals 66; girth at front of pectorals 78.5. 
Type, No. 50859, U. S. Nat. Mus., station 3815, off Diamond Head, Oahu. 
Seven young were obtained from a large female of the same species taken at station 4111, between 
Molokai and Oahu. They measured 61 cm. in length. Color bluish, pectorals, second dorsal, anal, and 
lower caudal lobe broadly tipped with black; ventral surface of body and paired fins, except the terminal 
dark areas, yellowish; tip of first dorsal yellowish. The head measured to last gill-opening 0.35 of 
length; depth at front of pectorals 0.18; depth of caudal peduncle 0.18 of head; snout 0.34; inter- 
orbital width 0.48. Curve of mouth elongate instead of circular, as in adult, its width being an eye’s 
diameter less than distance between tip of snout and anterior border of orbit. Distance between edge 
of mouth and tip of snout 1.1 times width of mouth. Height of dorsal 0.16 of length of head and 
body; length of pectoral 0.29; upper lobe of caudal 0.38. Dorsal and pectorals broadly rounded. 
Two of the specimens are kept as cotypes, Nos. 12788 and 12789, L. S. Jr. Univ. Mus. 
This shark appears to be closely related to Carcharias lamia Rafinesque, of the Atlantic. 
4. Carcharias nesiotes Snyder, new species. Plate 1, fig. 2. 
Head, measured to last gill-opening, 0.32 of length (tip of snout to caudal'pit) ; depth at front of 
pectorals 0.18; at front of ventrals 0.16; snout 0.32 of head; interorbital width 0.42; pectoral 0.27 of 
length; upper lobe of caudal 0.36. Mouth elliptical, not semicircular in shape, width equal to distance 
from tip of snout to posterior edge of orbit; width of space between tip of snout and anterior edge of 
mouth equal to distance between outer edges of nostrils, 0.26 of head; teeth of upper jaw strongly 
serrated, those near center of jaw symmetrical in shape, the width at base equal to or a little greater 
than height; laterally the outer edges of teeth grow concave, then notched; inner edges becoming 
convex, teeth pointing away from symphysis; teeth of lower jaw narrow, with wide bases, their edges 
smooth or very slightly serrated; symmetrical in shape on both middle and lateral parts of jaws. 
Pectorals pointed at tips when depressed, reaching as far back as posterior part of first dorsal, free edge 
concave; first dorsal bluntly pointed; second dorsal and anal equal in size, edge of anal deeply notched; 
edge of upper caudal lobe notched, distance from notch to tip of lobe contained 0.22 of length of lobe. 
Color, bluish gray above, the fins growing darker toward the tips; ventral surface lighter. 
The following measurements were made of a male taken at station 3902, off the northern coast of 
Molokai. Total length 224 cm.; tip of snout to dorsal 71; to eye 17.8; to gill-opening 44; to pectoral 
54; length of gill area 13.5; height of first gill-slit 6.5; of second 7; of third and fourth 6.5; of fifth 
5.8; anterior margin of pectorals 49; base of pectoral 14; posterior margin of pectoral 42; axil of 
pectoral to ventral 49.5; anterior margin of ventral 12.8; free margin of ventral 12.8; base of ventrals 
