66 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



a common base, in having more than one pore before each anterior 

 nostril, in usually having numerous dark stripes on the upper lip, and 

 in never having a dark humeral spot ; from E. striatus, in having more 

 than one pore before each anterior nostril, branched nuchal cirri, 

 paired pores in the preopercular series, a different color pattern, and in 

 lacking lateral branches on the main supraorbital cirrus. 



Remarks. — E. epalzeocheilus has been collected with or from the 

 same generally restricted geographic locality as E. striatus, E. vermicu- 

 latus, E. decussatus, E. t. thalassinus, E. sealei, and E. caudofasciatus . 

 It may be most obviously differentiated from: E. decussatus and E. 

 vermiculatus, in having fewer vertebrae, usually fewer predorsal com- 

 missural pores, supraorbital cirri (lacking lateral branches on the main 

 supraorbital cirrus), and in its strikingly different color pattern; from 

 E. t. thalassinus, E. sealei, and E. caudojasciatus, in having the ventral 

 margin of the upper lip completely crenulate, and in having more 

 pseudobranchial filaments, more than one pore before each anterior 

 nostril, and more than one cirrus on each side of the nape. 



Distribution (fig. 6). — E. epalzeocheilus is known from the Indian 

 Ocean, northern Malacca Strait, and Tutuila, Pacific Ocean. The 

 Tutuila population possibly represents a relict population of the 

 species, which previously was more broadly distributed. 



Material. — Indian Ocean: Seychelles Islands, Beacon Island: ANSP 102201, 

 USNM 258171 F-2 (cleared and stained) ; Curieuse Island: ANSP 102183; East of 

 India (only data): USNM 195780; India: Travancore, Konival, 10 miles south of 

 Trivandrum: SU 14734; Madras, Vizagapatam, foot of Dolphin's Nose: SU 

 14733; Waltair: SU 14732; Andaman Islands: SU 37131, USNM 112035; Ceylon: 

 BMNH 1903.5.12.4, MNHN A 2042; Malacca Strait: Pulo Perak, 05°41'N, 

 98°56'E: USNM 199423; Pacific Ocean: Samoa Islands, Tutuila: USNM 

 147653. 



Enlomacrodus niiiafoouensis (Fowler) 



Plates 9, lOc-rf 

 Salaries ninafoouensis Fowler, 1932b, Proc. U.S. Nat. Mus., vol. 81, no. 8, pp. 7-8 

 [Niuafoou Island]. 



Description. — Segmented dorsal fin rays 15 or 16; segmented anal 

 fin rays 16 or 17; posteriormost anal pterygiophore supporting 1 or 

 2 e.xternal elements (55.9 percent supporting 2) ; total gill-rakers 

 on first arch 21-28 (usually 22-26); pseudobranchial filaments 7-9. 

 number not increasing with increase in SL (above 32 mm SL) ; verte- 

 brae 34 or 35 (rarely 35) ; supraorbital cirri 4-7, number not increasing 

 with increase in SL (above 32 nun SL) ; main, or longest, supraorbital 

 cirrus with all branches mesially (32 of 34 specimens; 1 specimen each 

 also having 1 and 2 lateral branches) ; nape with 1 cirrus on each side 

 (cirrus rarely with 1 branch in large specimens) ; predorsal commis- 

 sural pores 6-69, number increasing with increase in SL (table 27) ; 

 preopercular series of pores with all positions with multiples of pores; 



