PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 49 



Seriola Stearusii, sp. uov. 



A Seriola with slightly compressed body, the height of which (.248) 

 is equal to one-fourth of its total length to the end of the middle caudal 

 rays, its width (.14) about one-seYenth of the same. (The height of the 

 body is contained about 4§ times in the length to the end of the middle 

 caudal raj'S.) Its shape sub-fusiform, with greatest height at the origin 

 of the second dorsal fin, whence its dorsal and ventral profiles slope 

 gently and gracefully, with about the same curve, to the snout and the 

 base of the caudal, which are nearly equidistant from the point referred 

 to; the circumference of the body (.04) nearly two-thirds of its total 

 length ; its height at the ventrals (.22) about five times the length of the 

 third dorsal spine ; its least height at the tail (.04) equal to one-sixth its 

 greatest height ; the distance from the end of the base of the second 

 dorsal to the base of the superior caudal lobe (.07) one-half of the great- 

 est width of the body. The caudal peduncle is somewhat depressed and 

 has prominent transverse grooves above and below and moderate lat- 

 eral cariniie, the length of the prominent part of which is somewhat less 

 than the length of the pectoral. 



The length of the head (.28) is contained slightly more than 3^ times 

 in the length of the body and equals twice its own width (.14). The 

 length of the snout (.10) is slightly greater than width of interorbital 

 area (.095). Length of operculum (.07) slightly greater than half that 

 of the upper jaw (.13) and slightly less than that of mandible (.15). The 

 maxillary extends to the vertical through the middle of the eye, the man- 

 dible to that from its posterior margin. Diameter of eye (.04^)contained 

 about three times in the length of tlie upper jaw and about G;V times in 

 the length of the head (diameter of iris 7 times in length of head). The 

 distance of the eye below the dorsal profile equals about two-thirds of 

 its own vertical diameter, which is the same as tiie greatest width of the 

 posterior flange of the maxillary bone. (The centre of the eye is situated 

 at a distance below the dorsal profile (.04) contained less than four times 

 in the height of the head (.14^j) at that point. Com])are with S. (jhjas.) 



Intermaxillary teeth in a villiform band, broadest at the symphysis 

 and decreasing in width to the end of the intermaxillary, which extends 

 back nearly as far as the maxillary. Palatine teeth in a club-shaped 

 patch, villiform. Vomerine teeth villiform, in an arrow-shaped patch, 

 the length of which equals the short diameter of the eye, and its shape 

 resembles that of the vomerine patch in Bhomhoplifcs. ]Mamlil>ulary 

 teeth similar to those on the intermaxillaries in form and arrangement. 

 On the tongue a median and two lateral patches of villiform teeth. 



The distance of the first dorsal from the snout (.35) is slightly more 

 than one-third of the length of the body ; the length of its base about 

 twice the length of its third si>ine. Its insertion is over the middle of 

 the base of the ventral. The origin of the second dorsal is slightly in 

 advance of the middle of the body, or al)out ef|uidist;iut from the snout 

 Proc. Nat. Mus. 79 4 July I, IS 70. 



