FISHES OF THE PHILIPPINE AND ADJACENT SEAS 27 



Genus ACANTHOCHROMIS Gill 



Acanthocliromls Gill, Proc. Acad. Nat. Sci. Phiia.. 18G3, p. 214. Tyi>e 

 Dascyllus polyacanthus Bleeker. orthotypic. 



Homalogrystes Alleyne and Macleay, Proc. Linn. Soc. New South Wales, 

 vol. 1, 1876, p. 2G8. Type Homalogrystes guntheri Alleyne and Mac- 

 leay, orthotypic. 



Eeptadecanthus Alleyne and Macleay, Proc. Linu. Soc. New South 

 Wales, vol. 1, 1877, p. 343. Type Heptadecanfhus longicaudis Al- 

 leyne and Macleay", orthotypic. 



Heptadecacaiitlius Jordan, Genera of Fishes, pt. 3, 1919, p. 387. Type 

 Heptadecanthus longicaudis Alleyne and Macleay'. 



Oblong-oval. Head deeper than long. Upper jaw not protrac- 

 tile. Teeth conic, biserial, outer row not prominent. Preopercle 

 serrate. Scales 32 or 33 in a median lateral series. Dorsal spines 

 17, rays 15 or 16. Anal rays 16 or 17. Caudal deeply forked, lobes 

 slender. 



Distinguished by the increased spines in the vertical fins. Sev- 

 eral nominal species have been proposed, likely synonyms of the 

 well-known Indo-Australasian form. 



ACANTHOCHROMIS POLYACANTHUS (Bleeker) 



Dascyllus polyacanthus Bleeker, Nat. Tijds. Ned. Indie, vol. 9, 1855, p. 



vol. 57, Fische, p. 357 (Feer) 1913. 



Indies). 

 TctradracJimum polyacanthus Bleekbh?, Ned. Tijds. Dierk., vol. 2, 1862, 



p. 274 (Amboina). 

 Acanthochromis polyacanthus Bleeker, Atlas Ich. Ind. Neerl., vol. 9, 1877, 



pi. 410 (11), fig. 7: Nat. Verh. Holl. Maatsch. Harlem. (No. 6), ser. 3, 



vol. 2, 1877, p. 151 (Sangi, Batjan, Amboina).— Weber, Abhand. Senck- 



enberg. Ges., vol. 34 (1), 1911, p. 17 (Kei Islands); Siboga Exp., 



vol. 57, 1913, p. 357 (Feer) Fische. 

 Homalogrystes guntheri Alleyne and Macleay, Proc. Linn. Soc. New 



South Wales, vol. 1, 1876, p. 269, pi. 6, fig. 3. About 12 miles south of 



the New Guinea coast at Katow. 

 Heptadecanthus longicaudis Alleyne and Macleay-, Proc. Linn. Soc. New 



South Wales, vol. 1, 1877, p. 343, pi. 15, fig. 3. Cape Grenville. 

 Heptadecanthus brempinnis De Vis, Proc. Linn. Soc. New South Wales, 



vol. 9, 1884, p. 872. Queensland Coast. 

 Heptadecanthus maculosus De Vis, Proc. Linn. Soc. New South Wales, 



vol. 9, 1884, p. 873. Cardwell. 

 Ahudefduf jordani Seale, Occas. Pap. Bishop Mus., vol. 4, No. 1, 1906, p. 



53, fig. 2. Shortland Island, Solomons. 



Depth 134 to 14^; head 31/5 to 31/2, width 1% to l^g- Snout 31/3 

 to 314; eye 234 to 3, greater than snout, 1 to ll^ in interorbital ; 

 maxillary nearly or quite reaches eye, 3% to 31/^ in head ; teeth conic, 

 upper biserial in front with inner greatly smaller and lower uni- 

 serial; interorbital 22/5 to 2%, broadly convex; infraorbital and hind 

 preopercle edge finely serrate. Gill-rakers 8-f 17, lanceolate, rather 

 long and slender. 



