434 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
3. AUXIS THAZARD. 
(The Frigate Mackerel.) 
Scomber thazard Lacepede, Hist. Nat. Poiss., iii, 9, 1802 (6° and 7° south lat., coast of 
New Guiuea). 
Auxis thazard Jordan & Gilbert, Synop. Fishes N. A., 911, 1883 ; Goode, Nat. Hist. 
Aquat. Anim., 305, pi. 92, f. 1, 1884 (Newport, R. I.); Jordan, Proc. U. S. 
Nat. Mus., 574, 1886. (No description.) 
Scomber rochei Risso, Ichtli. Nice, 165, 1810 (Nice). 
Auxis rochei Gunther, ii, 369, 1860 (Jamaica ; Amhoyna) ; Steindachner, Ichthy- 
ologische Berichte, v, 10, 1868 (Lisbon, Cadiz, Malaga) ; Goode, Proc. U. S. 
Nat. Mus., 532, 1880 (Block Island) ; Jordan & Gilbert, Synop. Fishes N. A., 
424, 1883; Steindachner & Doderleiu, Beitrage, iii, 12, 1885 (Japan). 
Scomber bisus Rafinesque, Caratteri, etc., 45, pi. 2, f, 1, 1810 (Palermo). 
Auxis bisus White, u Catal. Brit. Fishes, 32, 1851.” 
Thynnus rocheanus Risso, “Eur. Mdrid., iii, 417, 1826.” 
Auxis taso Cuv. & Yal., viii, 146, 1831 (New Guinea; after Lacdpede), 
Auxis vulgaris Cuv. & Val., viii, 139, 1831 (Mediterranean) ; Lowe, Proc. Zool. 
Soc., 248, 1850 (Madeira). 
Auxis tlx yn no ides Bleeker, “Ternate, v, 301, 1855” (Ternate). 
Auxis tapeinosoma Bleeker, u Fauna, Japan, 408, 1854; Verhand. Batav. Genootsch., 
xxvi, 98, tab. 7, f. 1, 1846 (Japan) ; Giintber, ii, 369, 1860 (Sea of Japan, 
copied). 
Habitat.— All warm seas; occasionally northward to Cape Cod. 
Etymology : Thazard , from the French Tassard , a name of Scombero- 
morus. 
This species is very erratic in its movements, swimming in large 
schools. It rarely reaches our coast, but then in immense numbers. It 
is a poor fish, of little value as food. If all the species of Auxis are iden- 
tical, the oldest specific name is that of thazard. The specimen exam- 
ined by us is from the island of St. Lucia. 
Genus III.— ORCYNOPSIS. 
Orcynopsis Gill, Proc. Acad. Nat. Sci. Phila., 125, 1862 ( unicolor ). 
Type: Scomber unicolor Geoffroy-St.- Hilaire. 
Etymology: dpxuvoq, Orcynus, the Tunny; ocptg, appearance. 
This genus is based on a single species found in the Mediterranean. 
Its vertebra have not been examined, but they will probably be found 
to have the same character as those of Gymnosarda , from which genus 
Orcynopsis differs but little. 
ANALYSIS OF SPECIES OF ORCYNOPSIS. 
a. [Body robust, compressed. About 20 teeth in each jaw. Maxillary extends to pos- 
terior margin of pupil. Corselet small, with rudimentary scales. Eyes small. 
Distance between first and second dorsal equal to the eye. Dorsal spines sub- 
equal. Anal inserted behiud vertical from the soft dorsal. Soft dorsal and anal 
falcate, the last rays rapidly shortened. Head short, 5 in length ; depth, 3^. D. 
xm-14-vm; A. 14- vii. Back bluish; belly silvery-gray ; spinous dorsal deep 
black ; pectoral black posteriorly. ] ( Collett) Unicolor, 4. 
