44 BULLETIN 95, UNITED STATES NATIONAL MUSEUM. 



a''. Ventrals inserted posteriorly, more or less nearer base of caudal than tip 

 of snout, used as organs of flight, and their tips reaching past middle of 

 base of anal ; anal fin short, not equal to dorsal fin Cypsilurus, p. 44. 



Genus EXOCOETUS Linnaeus. 



66. EXOCOETUS VOLITANS Linnaeus. 



Exocoetus volitans Linnaeus, Syst. Nat., ed. 10, 175S, p. 316; locality not 

 known. — Jordan and Ev'Ermann, Fishes North and Mid. Amer., vol. 1, 

 1896, p. 734; vol. 3, 1S98, p. 2835.— Abbott, Marine Fishes Peru, Proc, 

 Acad. Nat. Sci. Phila., 1899, p. 337. — Jordan and E\^rmann, Fishes 

 Hawaiian Islands, Bull. U. S. Fish Comm., vol. 23, pt. 1, 1903, p. 132, 

 fig. 45. 



Exocoetus chilensis Abbott, Proc. Acad. Nat. Sci. Phila., 1860, p. 472 — 

 Delfin, Cat. Peces de Chile, 1901, p. 44. 



Doctor Coker has the f olowing note on some fish eggs : 



Eggs were purchased in the market of Arequipa, July 26, 1908. They con- 

 stitute a common market article known as " cau-cau." According to the 

 fishei'men of Mollendo, these are the eggs of the flying fish, " volador," and are 

 found abundantly in the early summer, beginning with October. Large quan- 

 tities are dried for later use. This specimen of cau-cau, obtained moist in the 

 market, was said to have been freshened by soaking in water. Dry specimens 

 could also be obtained. 



Delfin, in his Catalogo de los Peces de Chile (1901, p. 44), states 

 that the common name of Exocoetus chilensis Abbott is " pez volador." 



Abbott^ places this species in the synonymy of E. volitans; thus 

 it appears that the eggs seen in the market may belong to this species. 



Genus CYPSILURUS Swainson. 



67. CYPSILURUS SPECULIGER (Cuvier and Valenciennes). 



Exocoetus cxlliens Jenyns, Zool Voy. Beagle, Fish., 1842, p. 122 (not of 



Gmeliu) ; coast of Peru. 

 Exocoetus spectiUger Cu\aEE and Valenciennes, Hist. Nat. Poiss., vol. 19, 



1846, p. 94. 

 Exocoetus rufipinnis Cuvier and Valenciennes, Hist. Nat. Poiss., vol. 19, 



1846, p. 99 ; Paita, Peru. 

 Exonautes specuUger Jordan and E\termann, Fish. North and Mid. Amer., 



vol. 3, 1898, p. 2836. — Abbott, Marine Fishes Peru. Proc. Acad. Nat. 



Sci. Phila., 1899, p. 337. 

 Cypsilurus specuUger Jordan and Seale, Fishes Samoa, Bull. U. S. Bur. 



Fish., vol. 25, 1905 (1906), p. 209, fig. 13. 



The flyingfish taken by Charles Darwin off the coast of Peru and 

 identified by Jenyns as Exocoetus exsiliens Bloch, is undoubtedly 

 this species. 



1 Proc. Phila. .Vcad. N.-it. Sci., 1899, p. 337. 



