302 MEMOIRS OF THE CARNEGIE MUSEUM 
26. Zanclus brevirostris Agassiz. (Plate XCVII, fig. 3.) 
1796. Cheetodon canescens Volta, Ittiolit. Veronese, pl. X XVI, fig. 2 (errore). 
1842. Zanclus brevirostris L. Agassiz, Poiss. Foss., Vol. IV, p. 236, pl. XX XVIII. 
Type.—Nearly complete fish; Paris Museum of Natural History. 
Represented by a single admirably preserved specimen in the Bayet Collection, 
cataloged as No. 4415, and bearing an original label which reads as follows: “Dono 
di Eugenio Sardagno, Venezia 18 Nr. 1888, ex Galleria Manfrin.”’ It is shown of 
the natural size in Plate XCVII, Fig. 3. 
Family Scompripa. Mackerels. 
All the existing members of this family are marine, and all known fossil repre- 
sentatives occur in marine deposits. The Tunny, or Horse Mackerel (Thynnus 
thynnus Linn.) is the Tuna or Leaping Tuna of southern California, and is the largest 
fish of the mackerel family, reaching a length of ten feet or more, and a weight of 
1500 pounds. It also occurs in the fossil state in the Pleistocene (Forest Bed Series) 
of Norfolk, England. 
Genus THyNNUS Cuvier. 
(Syn. Orycynus Cuvier.) 
27. Thynnus lanceolatus (Agassiz). 
1796. Scomber alatunga G. 8. Volta, Ittiolit. Veronese, p. 128, pl. X XIX, fig. 1 
fig. 1 (errore). 
1796. Salmo cyprinoides G. 8. Volta, ibid., p. 214, pl. LIT. 
1818. Clupea cyprinoides H. D. de Blainville, Nouv. Dict. d’Hist. Nat., Vol. 
XXVIL, p. 343. 
1818. Scomber altalunga H. D. de Blainville, ibid., p. 345 (errore). 
1835. Orycynus lanceolatus L. Agassiz, Neues Jahrb., p. 293. 
1835-44. Orycynus lanceolatus L. Agassiz, Poiss. Foss., Vol. V, pt. 1, p. 59, pl. 
XXIII. 
1876. Orycynus lanceolatus ¥. Bassani, Atti Soc. Veneto-Trent. Sci. Nat., Vol. III, 
p. 183: 
1889. Thynnus lanceolatus R. Storms, Bull. Soc. Belge Géol., Vol. III, Mém., 
Delis: 
1901. Thynnus lanceolatus A. 8. Woodward, Brit. Mus. Cat. Fossil Fishes, pt. 
IV, p. 456. 
Type.—Imperfect fish; Paris Museum of Natural History. 
This comparatively small species is represented by a single imperfect fish 22 
