84 Direclor' s Annual Report. 



124. Abudefduf dickii Lienard. Fomho. 



Head 3.20; depth 1.66; e^-e 3; snout equal to eye; interorbital 

 2.66 into head; D. xii 15; A. 11 14. Scales 30. Body short and 

 compressed. Opercles entire. Teeth compressed and in a single 

 row. The tubular portion of the lateral line stops below posterior 

 end of soft dorsal fin. Fins: Caudal well forked. The anterior 

 rays of dorsal and anal somewhat prolonged. Rays of ventral equal 

 to or slighth' longer than head. \>rtical fins scaled. Color in 

 spirits: Grayish brown, with a black band on posterior third of 

 bod3% descending from third-seventh dorsal rays to middle of soft 

 anal. Caudal and pecftorals yellowish white, slightly du.sky at tip, 

 the remaining fins dusky. One specimen. Length 4 inches. Guam, 

 June 14, I goo. Hab. Samoa, Caroline Islands, Marianas. 



125. Abudefduf amboinensis (Bleeker). 



Head 2.30; depth 2.33; eye 2.66; interorbital equal to orbit; 

 maxillary 2.66; scales 2-27-7; ^- ^m 9^ ^- ^i ^O- Body oblong, 

 compressed. Snout .shorter than diameter of eye, each jaw with 

 about 40 small teeth. Fins: Dorsal and anal fiins with their mid- 

 dle raj'S longest. Caudal deeply forked with the lobes much pro- 

 duced. Pecftorals and ventrals of about equal length, i into head. 

 Color in spirits: Brownish violet, slightly lighter below. A deep 

 brown spot at base and in axil of pec5lorals. All the fins more or 

 less washed with blui.sh, except pec5torals which are white. Six 

 specimens. Length 3.50 inches. Guam, June 14, 1900. Hab. 

 Amboyna, Marianas. 



Gknus TETRADRACHMUM Cantor. 



126. Tetradrachmum aruanum Linn. 



Head 3.50; depth 1.75; eye 2.75 into length of head; snout 

 slightly shorter than width of eye; D. xii 13; A. 11 11. Scales 

 3-26-1 1. Color: Whitish with three broad black cross bands, the 

 first ascending obliquely upwards and back from the chin through 

 eye to base of spinous dorsal; the second covers the ventral fins 

 and extends in a slightly curved course to the fifth -ninth dorsal 

 spines ; the third embraces the soft anal, extends ventrally up- 

 wards on to the soft dorsal. Caudal fin white. The interorbital 

 space is white. This is a very abundant little fi.sh about the coral 

 reefs, and were easily caught by lifting the chunks of dead coral 

 out of the water and holding it over a net, the fishes, which were 

 hidden in the holes of the coral, dropping out into the net. One 

 hundred and twenty-five specimens were secured. Length .50-2.50 

 inches. Guam, June, 1900. Hab. Eastern coast of Africa, .seas 

 of India, Polynesia and New Zealand, Marianas. Numerous at 

 the Andamans, Nicobars and Burmah. Much rarer in western 

 than in eastern India. 



