206 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



D. X, 13, I, third spine 1% to 2% in total head length, first ray 31/5 to 

 3% ; A. Ill, 11, I, second spine 3 to 31/5, first ray 31/5 to 31/2 ; least 

 depth of caudal peduncle 314 to 3^3 ; ventral ly^ to l^A ; caudal 2% 

 to 31/^ in combined head and body, deeply forked, slender lobes 

 falcate ; pectoral 2% to 3. 



Back gray brown, lower sides and under surface whitish. Back 

 with blue tinge, also azure green tinge on some scales. Iris yellowish 

 brown. Dorsals grayish dusk}^, also caudal with tij)s broadly black- 

 ish. Anal grayish. Paired fins pale, inside pectoral base small 

 dusky gray blotch, slightly reflected as small spot at pectoral origin. 



Red Sea, Arabia, Zanzibar, East Indies, Philippines, Tonkin, 

 Melanesia. A handsome species, largely bluish in color and with 

 broad blackish tip to each caudal lobe. The vertical fins are also 

 more closely covered with small scales than in most species. 



11290, 22109. Alimango Bay, Burias Island. March 5, 1909. Length 160 mm. 



17771. Alimango Bay. June 4, 1909. Length 170 mm. 



15711 [286], 15712 [285]. Busin Harbor, Burias Island. March 8, 1909. Length 

 109 to 125 mm. 



15018. Makesi Island, Palawan. April 5, 1909. Length 140 mm. 



5571. Masbate Reef, Masbate. April 20, 1908. Length 275 mm. 



22457. Nasugbu, Luzon. January 16, 1908. Length 92 mm. 



12582, 12583, 13443. Opol, Mindanao. August 4, 1909. Length 179 to 208 mm. 



16993, 16994, 16997. Parang, Mindanao. May 23, 1908. Length 150 to 173 mm. 



8007, 8009, 8011, 8012, 11744, 11745, 13854. Port Banalacan, Marinduque. Feb- 

 ruary 23, 1909. Length 192 to 305 mm. Top of head and back indigo to 

 Prussian blue ; lower parts whitish, washed with red ; scaly dorsal similar 

 to back in color, margin blackish, with red shades posteriorly ; caudal body 

 color, tipped with black ; anal bright red ; black blotch at upper base of 

 pectoral, including all external side of axil ; paired fins dusky. 



9023, 9024, 10355. Port Jamelo, Luzon. July 13, 1908. Length 158 to 192 mm. 



5291, 5292, 6298, 6299. Romblon. March 25, 1908. Length 173 to 178 mm. 

 Back greenish ; lower portions washed with rosy ; lacking purple stripes on 

 head and having tips of caudal black ; the margin within the fork same 

 color as anal ; terminal portion of dorsal sooty with brownish shades on 

 membranes ; paired fins reddish or rosy, axil with black ; scaled portion of 

 dorsal with irregular dashes of light on scales. 



A656, A657. Simaluc Sibi Sibi Island. September 23, 1909. Length 276 to 

 285 mm. 



19223. Tapiantana Island, south of Zamboanga. September 13, 1909. Length 

 117 mm. 



4968. Tataan, Tawi Tawi Group. February 21, 1908. Length 287 mm. Back 

 and top of head indigo and green, lower parts lighter, flushed with bright 

 salmon-red on median region throughout. Scaled dorsal pale with shades of 

 blue and green ; naked membranes dusky pink, spines and rays darker. 

 Caudal purplish. Anal membrane pink, becoming scarlet posteriorly ; 

 posterior rays bluish. Ventral hyaline, flushed with salmon. Pectoral with 

 hyaline membrane and pink rays ; purplish bar at base ; axil black, includ- 

 ing blotch just above. Iris red with silvery. 



10458. Tilig, Lubang Island. July 14, 1908. Length 102 mm. 



A961, A962. Biuang Buang, Gulf of Tomini, Celebes. November 16, 1909. 

 Length 225 to 236 mm. 



