264 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



b^. Cyphomycter, new subgenus.* Type Naso tuberosus Lacepede. A convex 

 and compressed crestlike hump above snout in the adult. 



p. Brown, with black or blue dots or short vertical lines; tins black- 

 ish, verticals with wiiite edges; caudal without filaments 



tuberosus 



p. Deep brown, blue spots on head and upper and lower edges of body • 



middle of sides with numerous close-set, vertical gray-blue, lines; 



caudal ends in 2 long filaments eoume 



o^. Head without horn or hump at any age. 



g^. Callicanthus. Tail with 2 bucklers each side. 

 h^. Dorsal and anal each with 26 to 29 rays. 



iK Yellow band from eye and nostrils arclies down till behind 



mouth angle; dorsal dark with white margin; caudal 



bucklers orange; caudal ends in 2 long filaments_lituratus 



i*. No yellow band on side of snout; caudal bucklers dull; 



caudal without filaments. 



7I. Depth 1% to 3; eye 2% to 3M in head hexacanthus 



j2. Depth 2^; eye 5 to 0^ in head genimarginatus 



p. Depth 3 to S%; eye 4 to 5% in head vomer 



h'^. Dorsal and anal each with 23 to 25 rays; soft dorsal and anal 

 narrowly white-edged and each with 3 longitudinal blackish 

 bands; hind caudal and pectoral edges pale; depth 2}^ to 



2/-^; eye 3M to 4^ in head tapeinosoma 



g^. AxiNURus. Tail with a single buckler each side; teeth very 

 small, tapering, not serrated. Dorsal and anal brown, with 

 several whitish oblique longitudinal bands, fin edges also nar_ 

 rov/ly whitish thynnoides 



NASO UNICORNIS (Fo!sk&!) 



Chaetodon unicornis Forskal, Descr. Animal., 1775, pp. xiir, 63. Djedda, 

 Red Sea. — Gmelin, Syst. Nat. Linn., 1789, p. 1268 (Arabia). — Walbaum, 

 Arted. Pise, vol. 3, 1792, p. 440 (on Forskal). 



Chetodon unicornis Bonnaterre, Tabl. Ichth., 1788, p. 82, pi. 95, fig. 39 

 (Red Sea). 



Aspisurits unicornis Ruppell, Atlas Reise Nordl. Afrika, Fische, 1828, p. 60 

 (Red Sea). 



Naseus unicornis Gunther Cat. Fish. Brit. Mus., vol. 3, 1861, p. 348 (Cey- 

 lon, Frankland Island, Red Sea, Aneiteum). — Klunzinger, Verh. zool. bot. 

 Ges. Wien, vol. 21, 1871, p. 512 (Koseir, Red Sea). — Gunther, Journ. Mus. 

 Godeffroy, vol. 4, 1875, p. 118, pi. 78, figs. 1-4 in text (Huahine, Tahiti).— 

 Peters, Monatsber. Akad. Wiss. Berlin, 1876, p. 440 (Mauritius). — 

 Day, Fishes of India, pt. 2, 1876, p. 209.— Streets, Bull. U. S. Nat. 

 Mus., No. 7, 1877, p. 68 (Honolulu). — Alleyne and Macleay, Proc. 

 Linn. Soc. New South Wales, vol. 1, 1876, p. 339 (Bramble Bay).— GtJN- 

 ther, PliLlos. Trans. Roy. Soc. London, vol. 168, 1879, p. 470 (Rodri- 

 guez). — Klunzinger, Fische Roth. Meer., 1884, p. 86. — Day, Fauna Brit. 

 India, vol. 2, 1889, p. 147. — Steindachner, Abh. Senckenb. Naturf. Ges., 

 vol. 25, 1900, p. 427 (Ternate). — Pellegrin, Bull. Mus. Hist. nat. Paris, 

 vol. 13, 1907, p. 203 (Tulcar, Madagascar); Bull. Soc. Zool. France, vol. 

 39, 1914, p. 227 (Mahambo, Madagascar). 



Acanthurus unicornis Jordan and Fowler, Proc. U. S. Nat. Mus., vol. 25, 

 1902, p. 559 (Nagasaki; Honolulu). — -Evermann and Seale, Bull. Bur. 



8kC(^os, hump; fiVKTrip, nose or snout. 



