FISHES OF HAWAIIAN ISLANDS. 
271 
Color in alcohol, dark brown, edges of scales darker; a dark stripe on upper edge of membranes 
of spinous dorsal, broadest and most distinct anteriorly ; rest of dorsal, and caudal and pectoral dark 
brownish; ventrals and anal dark, almost black; a black blotch at upper base of pectoral, continuous 
with the black axil. 
This is a very abundant species among the Hawaiian Islands. Numerous specimens were obtained 
at Honolulu in 1889 by Dr. Jenkins, and others by Dr. Wood in 1898 and Dr. Jordan in 1900. Our 
own collections, made in 1901, contain numerous specimens, the localities represented being Honolulu, 
Hilo, and Kailua, and specimens were taken by the Albatross in 1902 at many different places among 
the Hawaiian Islands. 
The above description is based chiefly upon a specimen (field No. 04526) 4.8 inches long, obtained 
by us at Honolulu. The length varies from 3.75 to 5.25 inches. 
Pomacentrus nigricans, Quoy & Gaimard, Voyage Uranie, Zool., 399, 1824 (Sandwich Islands, not of Laeepede); Cuvier & 
Valenciennes, Hist. Nat. Poiss., v, 425, 1830; Gunther, Cat., iv, 34, 1802 (Sandwich Islands); not Holocenlrus nigri- 
cans LacCpede, Hist. Nat, Poiss., iv, 332 and 367, 1803, locality unknown, collected by Commerson. 
Euponiacentrus marginatus Jenkins, Bull. U. S. Fish Comm, for 1899 (June 8, 1901), 391, fig. 5, Honolulu. (Type, No. 49700 
U. S. N. M., Coll. O, P. Jenkins); not Pomacentrus marginatus Riippell. 
Euponiacentrus nigricans, Fowler, Proc. Ac. Nat. Sci. Phila. 1900, 503 (Honolulu). 
Pomacentrus jenkinsi Jordan & Evermann, Bull. U. S. Fish Comm., xxn, 1902 (April 11, 1903), 189, Honolulu; Snyder, 1. c., 
(Jan. 19, 1904), 527 (Hawaiian Islands; Laysan Island). 
Genus 145. ABUDEFDUF Forskal. 
Body deep, compressed, covered with large ctenoid scales; snout without scales; preoperele and 
preorbital entire, the lower limb of preoperele scaleless; 3 to 4 rows of scales between lateral line and 
dorsal; teeth compressed, fixed, more or less distinctly emarginate, in one series in each jaw, those 
below occupying most of the free edge of the jaw; jaws subequal. Dorsal usually with 13 spines, the 
last slightly shorter than the medium ones; branchiostegals 5 or 6; pyloric caeca 3; lower pharyngeal, s 
triangular. Species numerous, often brightly colored, found about coral reefs in the tropical seas. 
We exclude from this genus all species with rounded, biserial teeth. 
