14 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



6^ Caudal moderately emarginate ; body lighter ; young and adults with 

 obscure transverse dark baud, but without dorsal or nuchal spot. 



marginatus. 

 a^ Dascyllus. Ground color white, with 3 black transverse bands, strongly 

 contrasted. 



c\ Caudal largely black melanufus. 



c^ Caudal white aruanus. 



Pellochromis, new subgenus 



Type. — PoTnacentrus trimaculatits Riippell. 



Coloration dusky or sombre, largely uniform and without broad 

 black vertical bands. 



(•n-eAAos, dark; Chromis; with reference to the dark or dull colora- 

 tion. ) 



DASCYLLUS TRIMACULATUS (Riippell) 



Pomacentrus trimaculatus Rxjppell, Atlas Eeis. Nordl. Afr., Fische, 1828, 

 p. 39, pi. 8, fig. 3. Massaua, Red Sea. 



Dascyllus trimaculatus Cuvier, Hist. Nat. Poiss., vol. 5, 3830, p. 441 

 (Massaua). — Gtjnther, Cat. Fish. Brit. Mus., vol. 4, 1862, p. 13 (Red 

 Sea, Mauritius, Mozambique, Amboina, Louisiades, Aneiteum, type of D. 

 unicolor and Pomacentrus nuchalis) ; Fishes of Zanzibar, 1S66, p. 81 

 (Aden, Zanzibar). — Capello, Journ. See. Lisboa, 1871, p. 281 (Mozam- 

 bique). — Klunzinger, Verb. zool. bot. Ges. Wien, vol. 21, 1871, p. 519 

 (Koseir, Red Sea), — Cartiee, Verb. Ges. Wiirzburg, vol. 5, 1874, p. 97 

 (Ubay, Bohol). — Gunther, Journ. Mus. Godeffroy, vol. 7 (15), ISSl, p. 236 

 (Red Sea, East Africa, East Indies, Society Islands, Kingsmills, Pelew 

 Islands, Yap, Louisiades, Aneiteum, Hawaiian Islands). — Boulengeb, 

 Proc. Zool. Soc. London, 1887, p. 664 (Muscat).— Weber, Zool. Forsch. 

 Astral. Ritter Semon, vol. 5, 1895, p. 27 (Ambon). — Fowler, Journ. Acad. 

 Nat. Sci. Phila., ser. 2, vol. 12, 1904, p. 553 (Padang, Sumatra).— 

 Regan, Trans. Linn. Soc. London, (2) Zool., vol. 12, 1907, p. 229 (Car- 

 gados Carajos). — Jordan and Seale, Bull. Bur. Fish., vol. 27, 1906 (1907), 

 p. 27 (Manila).— Regan, Ann, Durban Mus., vol. 1, 1914-1917, p. 459 

 f^urban. Natal).— Fowler, Copeia, No. 58, June 18, 1918, p. 64 (Philip- 

 pines). 



Tetradrachmum trimaculatus Bleeker, Atlas Ich. Ind. N6erl., vol. 9, 1877, 

 pi. 409 (10), fig. 8; Nat. Verb. Holl. Maatsch. Harlem, (No. 0), ser. 3, 

 vol. 2, 1877, p. 144 (Sumatra, Java, Bali, Celebes, Batjan, Burn, Amboina, 

 Haruco, Ceram, Banda, Goram). 



Tetradrachmum trimaculatum Dat, Fishes of India, Suppl., 1888, p. 801; 

 Fauna British India, vol. 2, 1889, p. 379. — Steindachnee, Abhandl. 

 Senckenberg. Ges., vol 25, 1900, 439 (Halmaheira and TernaJe). — Webeb, 

 Siboga Exp., vol. 57, Fische, 1913, p. 356) (West New Guinea, Lucipara 

 Island, Banda). 



Pomacentrus nucJiali-s Bennett, Life of Raffles, 1830, p. 688. Sumatra. 



Dascyllus unicolor Bennett, Proc. Comm. Zool. Soc. London, vol. 1, 1831, 

 p. 127. Mauritius. 



Dascyllus niger Bleeker, Verb. Batav. Genoot. (Labr.), vol. 21, 1846- 

 1847, p. 10. Java. 



Sparus nigricans (part) Gray, Cat. Fish. Gronow, vol. 2, 1854, p. 61. India. 



Dascyllus alMsclla Gill, Proc. Acad. Nat. Sci. Phila., 1862, p. 149. Hawai- 

 ian Islands. 



