126 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



to be most closely interrelated (see "Relationships" under E. nigricans 

 and E. chiostictus) . 



Entomacrodus cadenati differs: from all its closest relatives, in 

 having numerous dark spots on the upper lip (arranged in more or 

 less vertical rows) and in the peculiar well-developed dark marks 

 behind its eye; from its geographically closest relative, E. textilis, in 

 not having a relatively large, well-developed subquadrate blotch in 

 the humeral region; from E. vomerinus, in having fewer segmented 

 dorsal and anal fin rays and vertebrae; from E. chiostictus, E. caudo- 

 fasciatus, and E. seali, in its usually shorter supraorbital and nuchal 

 cirri; and from the latter species and E. corneliae (and frequently E. 

 chiostictus), in having no paired pores in the preopercular series. E. 

 cadenati has fewer predorsal commissural pores at any particular size 

 than does E. sealei, and more gill-rakers than E. caudofasciatus. 



Remarks. — There is a tendency for males to have a higher average 

 number of segmented dorsal fin rays than females. Of 30 males ex- 

 amined, 2 had 14 rays, 26 had 15 rays, and 2 had 16 rays. Of 47 

 females examined, 14 had 14 rays and 33 had 15 rays. There was 

 no evidence of sexual dimorphism in other meristic characters. 



Distribution (fig. 9). — Entomacrodus cadenati is known only from 

 the eastern Atlantic Ocean from the Cape Verde Islands to the He 

 de Roume, French Guinea. According to J. Cadenat (in Htt.), the 

 species is characteristic of the wave-battered rocky shores of Goree, 

 Senegal. 



Material.— Cape Verde Islands, He de Sao Thiago: USNM 199623; He de Sal: 

 IFAN (no number); Senegal, Goree: MNHN 1965-705 (holotype of E. cadenati), 

 1965-706, USNM 199481; French Guinea, He de Rouin6: IRSN 401; Liberia, 

 Robertsport: RiMNH 5323; Ghana, Takoradi: CU 44175 44176; French Congo, 

 Bata: MNHN 92-24. 



Entomacrodus nigricans Gill 



Plate 24 

 Entomacrodus nigricans Gill, 1859, Proc. Acad. Nat. Sci. Philadelphia, vol. 11, 



p. 168 [near Bridgetown, Barbados]. 

 Salarias margarilaceus Poey, 1860, Memoria.s sobre la historia natural de la Isla 



de Cuba, vol. 2, pp. 289-290 [Cuba]. 

 Entomacrodus decoratus Poey, 1868, Reperterio fisico-natural de la Isla de Cuba, 



vol. 2, p. 398 [Cuba]. 



Description. — Segmented dorsal fin rays 13-16 (14 or 15 in all but 

 2 specimens); segmented anal fin rays 14-17 (89 percent with 16); 

 posteriormost anal pterygiophore supporting 1 or 2 external elements 

 (supporting 2 in 90 percent of specimens) ; total gill-rakers on first 

 arch 14-20 (15-18 in 86 percent of specimens) ; pseudobranchial fila- 

 ments 5-7 (6 in 80 percent of specimens, number not increasing with 

 increase in SL); vertebrae 33-35 (34 in 95 percent of specimens); 

 supraorbital cirri 1-11, number increasing with increase in SL (table 



