72 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Dorsally, these marks extend onto the dorsal fin taking a dorso- 

 posterior direction. The anteriormost bandlike area is restricted to 

 the side below the anterior dorsal fin spines. In the region of the 

 pectoral axil this marking forms a dark (humeral) blotch. 



As its darkest mark, the head bears an elongate stripe posterior to 

 the eye. This stripe extends ventrally into a larger, paler, irregular 

 area on the cheek. The snout and upper lip bear numerous small 

 dusky spots arranged in somewhat vertical series. There are faint 

 indications of a dusky Y-shaped chevron midventrally on the head. 



The anal fin membranes are evenly dusky, grading darker distally, 

 darker than the anal elements. The pectoral fin is pale dusky with a 

 darker, diffuse, elongate spot at the bases of the central rays. Another 

 such spot, separated by a pale area, is on the fleshy pectoral base. 

 Tlie pelvic fins are pale dusky. The caudal fin is pale dusky, darker 

 along the rays, with indications of some irregular marks on its proximal 

 half. 



Relationships and comparisons. — Entomacrodus randalli is a 

 member of the E. striatus species group. It differs from other mem- 

 bers of the group in the following: from E. niuafoouensis and E. 

 epalzeocheilus, in having a single pore before each anterior nostril, 

 and spots, instead of stripes, on the upper lip; from E. epalzeocheilus 

 and E. marmoratus, in having a single cirrus on each side of the nape ; 

 from E. marmoratus and E. striatus, in having branches of the supra- 

 orbital cirrus only on the mesial margin of the cirrus; from E. striatus, 

 in having paired pores in the preopercular series and a strikingly 

 different color pattern. E. randalli is quite similar to E. niuafoouensis 

 and is probably a relatively recent derivative of the same species 

 which gave rise to E. niuafoouensis. 



Remarks. — Entomacrodus randalli is endemic to the Marquesas 

 Islands and has been taken in the same collection with the other 

 two species (fig. 6) of Marquesan Entomacrodus, E. corneliae and 

 E. macrospilus, also endemics. E. randalli differs from these two 

 species most prominently in having the ventral margin of the upper 

 lip completely crenulate, more gill-rakers, and more pseudobranchial 

 filaments. 



TABLE 29. — Proportional dimensions as percent SL of specimens of Entomacrodus randalli 

 (specimens in poor condition; proportions approximate; for meaning of abbreviations 

 see methods section) 



