100 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



separated by pale areas; infrequently there is a darkly dusky area 

 (spot) just behind the eye, which, when present, is the most con- 

 spicuous mark on the side of the head. The upper lip usually bears 

 seven pale, slender stripes alternating witn eight lignt to dark dusky 

 bands, more than twice the width of the stripes. The dark band at 

 each corner of the lip is the narrowest and may be only slightly wider 

 than the adjacent stripe. The lip bands may be almost absent in 

 females. Extensions of the lip bands and stripes may appear on the 

 imderside of the head as chevrons. 



The anal fin is light to dark dusky with scattered pale spots. The 

 spots may be absent in males. The anal spines of males are dark 

 dusky, those of females, pale. The caudal fin bears about three to 

 six irregular dusky bands alternating with pale areas, the number 

 depending on ttie length of tlie specimen (larger specimens tend to 

 have more bands) . 



Nomenclature. — Entomacrodus sealei was described from a single 

 specimen. This specimen is now in very poor condition, the head 

 almost detached, but it was possible to determine that the upper lip 

 was crenidate on at least one side and entire in the middle; the op- 

 posite side was damaged. There were at least three pore pairs 

 included in the preopercular series and there were indications of pale 

 stripes and dusky bands on the upper lip. With this information it 

 is possible to place E. incisolabiatus in the synonymy of E. sealei. 

 The holotype of E. incisolabiatus has four pairs or multiples of pores 

 included in the preopercular series and pale stripes and dusky bands 

 on the upper lip. Schultz and Chapman (1960) apparently over- 

 looked the description of E. sealei at the time of their description of 

 E. incisolabiatus. 



Relationships. — Entomacrodus sealei is a member of the E. 

 nigricans species group. Of this group it is most closely related to 

 E. corneliae from which it differs usually in having pale stripes and 

 dark bands on the upper lip and in lacking dark vertical stripes on 

 the head behind the eye (see "Relationships" under E. corneliae). 



Entomacrodus sealei (and E. corneliae) is next most closely related 

 to E. chiostictus (see "Relationships" under E. chiostictus) . It differs 

 from E. chiostictus in having three to five pairs or multiples of pores 

 included in the preopercular series (only 2.8 percent of E. chiostictus 

 specimens overlap E. sealei in this character) and in the nature of the 

 lip stripes and bands (adumbrated by a few Clipperton Island speci- 

 mens of E. chiostictus). Usually E. chiostictus specimens have more 

 complete banding of the body than do specimens of E. sealei. 



Remarks. — E. sealei is occasionally collected with E. caudojasciatus, 

 from which it can be distinguished (and from all Atlantic Ocean 

 species of the genus also) by having three or more pairs of pores 



