PROCEEDINGS OF UNITED STATES NzVTIONAL MUSEUM. 423 

 Measuremen is — C ontin ued. 



Cnnent uumher of specimen. 

 Locality 



Caudal: 



Lenjith of middle rays 



Lenfitb of cxteinal rays 



Distance between lobe tips 



Pectoral: 



Distance from snout 



Longtb 



Ventral : 



Distance from snout 



Lenjitb of groove from base of ventrals to vent. 



Dorsal 



Anal 



Caudal 



Pectoral 



Ventral 



"Weight, dressed (pounds) 



Number of vertebrae: 



Dorsal 



Caudo-lumbar 



B. 



New Bedford, Wood's Holl 



Mass., July 

 25, 1875. 



Inches. 



2.00 

 16.00 



Mass., 1875. 



Inches. 



29.00 

 13.50 



30.50 

 18.50 

 39+5 

 14+6 



Geiius Histiophorus Lacepede. 



<^Isiiophorus, Lacepede, Hist. Nat. Poiss. iii, 1803, p. 374. 

 <^H\st'wpliorm, CuviER & VALENCiENNEt^, Hist. Nat. Poiss. viii, 1833, 291. 

 <^nistmphorus, Gunther, Cat. Fish. Brit. Mtis. ii, 1860, p. 512. 

 Notistium, Hermann, Observ. Zool. 1804, p. 305. 



Diagnosis of genus. 



Xipliiid, tetraptnrine fishes, with body slender and very much com- 

 pressed. Dorsal single (tbougii the last few rays are nearly abortive), 

 retainiug the character of extreme youth, which is lost in Xiphias and 

 Tetrapturus^ and very lofty. • Vertebriie 24 [H. indicus). Anal fin double. 

 Numerous tooth-like asperities on the jaws. Body covered with elon- 

 gate scales. Dorsal rays, being unaborted, very numerous. Ventrals 

 consisting each of two or three elongate rays. Intestine short, nearly 

 straight, with two foldings. A single species in the United States, 

 Histiophorus americanus, Cuvier. 



9. Histiophorus gladius (Broussonet), Lacepede. 



Scomber gladius, Broussonet, Mem. Acad. Sci. 1786, p. 454, pi. s. 



<^Scomber gladius, Bloch, Ichthyology, pi. cccxlv: Hist. Nat. Poiss. 



<^Istiophorus gladius, Lacepede, "iii, pp. 374-5", 2d ed. 8°, 1819, p. 542. 



Histiophorus gladius, GOnther, 1. c. p. 513. — Gill, 11. c. 



<^Xiphias velifer, Schneider, 1. c. p. 93. 



Histiophorus indicus, Cuv. & Val. 1. c. p. 293, pi. coxxix. 



This species, described first by Broussonet from specimens brought 

 from the Indies — "la mer des Indes" — by Banks, has usually been con- 

 sidered, perhaps rightly, i)y later authors to be identical with the Ameri- 

 can form. 



