NO. 3582 GENUS ENTOMACRODUS — SPRINGER 35 



barred; dorsal rays 16-18 (modally 17); anal rays 16-19; pores before 

 anterior nostril varying in number with population, but typically 1. 



decussatus (Pacific Ocean and western Australia) 



18a. Two to 20 cirri on each side of nape (sometimes in form of single main 

 cirrus with several branches at its distal end, the free tip of each branch 

 here counted as a cirrus) 19 



18b. One cirrus on each side of nape (only rarely, in large specimens, 2 cirri on 

 one side of nape) 20 



19a. Nuchal cirri on each side almost always arising from 2 main bases (patches) > 

 the medial cirri patch the broadest based and usually with more cirri 

 than the lateral patch; 1 pore before each anterior nostril; main supra- 

 orbital cirrus with at least 3 cirri arising from both its medial and lateral 

 margins; 29-39 crenulae on ventral margin of upper lip (usually more 

 than 30) ; preopercular series of pores with 0-7 positions with pairs or 

 clusters of pores (less than 4 pairs or clusters in 73 of 80 specimens) . 



marmoratus (Hawaiian Islands from Midway to Hawaii) 



19b. Nuchal cirri on each side arising from a single base (very rarely arising from 

 2 main bases on 1 side only) ; 2 or more pores before each anterior nostril 

 (except in some specimens smaller than 60 mm SL, where a single pore 

 may be present) ; main supraorbital cirrus with cirri arising only along its 

 mesial margin (5 specimens with 1 cirrus and 1 with 2 cirri arising from 

 lateral margin) ; 23-32 crenulae on ventral margin of upper lip (usually 

 less than 30) ; preopercular series of pores with 4-7 (usually more than 4) 

 positions with pairs or clusters of pores. 



epalzeocheilus (Indian Ocean and Samoa) 



20a. Pairs or clusters of pores at 2-5 positions in preopercular series of pores; up 

 to 69 predorsal commissural pores (frequently more than 20) .... 21 



20b. No pairs or clusters of pores included in preopercular series of pores (all 

 pores simple) ; up to 33 predorsal commissural pores (rarely more than 

 20) ' : . . . 24 



21a. One pore before each anterior nostril; gill-rakers 15-24 22 



21b. Two to 4 pores before each anterior nostril (except in one specimen which 

 had 2 on one side and 1 on the other) : gill-rakers 23-26 23 



22a. Gill-rakers 15-21 (rarely more than 19); pseudobranchial filaments 4-7; 

 upper lip color pattern imiformly dusky or consisting of 7 or 8 dusky 

 bands separated by pale stripes; no dark humeral blotch. 



sealei (western Pacific) 



[Note: Almost all specimens entering key couplet 22a will be E. randalli as only 



a few unusual specimens of E. sealei have the upper lip completely crenulate.] 



22b. Gill-rakers 21-24; pseudobranchial filaments 8-10; upper lip pattern con- 

 sisting of numerous diffuse spots; a slender dark humeral blotch present. 



randalli (Marquesas Islands) 



23a. Seven to 9 diffusely dusky bands on lip; dark blotch in humeral region con- 

 spicuous; nuchal cirrus 4.1-4.7 percent SL. niuafoouensis (Madagascar) 



23b. Seventeen to 23 dusky stripes on upper lip; dark blotch in humeral region, 

 if present, diffuse, not obvious; nuchal cirrus 2.4-3.9 percent SL. 



niuafoouensis (Pacific Ocean) 



24a. Predorsal commissural pores 3 in specimens 26-42 mm SL (apparently 

 remaining constant) ; anal rays 18 (one specimen out of 13 with 17 rays) ; 

 vertebrae 35; head smaller, 21.3-23.0 percent SL in specimens 26-42 mm 

 SL, decreasing in relative size with increasing SL. 



rofeni (Raroia, Tuamotus) 



