GENTS ENTOMACRODUS — SPRINGER 



97 



row pale margin bounding the ventroposterior margin of the spot bet- 

 ter delineated, the blotch following the pale margin much darker 

 (sometines approaching the spot in intensity). Occasionally, there 

 are faint indications of pale and light dusky stripes extending postero- 

 ventrally from the eye (adumbrating the condition in males of E. 

 cymatohiotus) (pi. 17). The spinous and soft dorsal fins are more uni- 

 formly dusky, the spinous darker. The anal fin is also much darker 

 then that of females and lacks the spotting posteriorly. 



Relationships. — Entomacrodus chapmani is most closely related to 

 E. cymatohiotus and E. strashurgi (for differentiation, see key couplets 

 24 and 25) . Of the latter two species, E. chapmani appears to be closer 

 to E. cymatohiotus (for discussion, see "Relationships" under E. 

 cymatohiotus) . 



Distribution (fig. 8). — Entomacrodus chapmani is known only from 

 Easter Island, where it is also the only member of its genus known. 

 E. chapmani is the same species as the misidentified Entomacrodus 

 striatus reported by de Buen (1963, p. 59). 



HoLOTYPE. — MCZ 29446, an adult female, 52.5 mm SL, with a label 

 reading: "E. Pacific Ex. 1904-05. 'Albatross'. Easter Island, Dec. 20. 

 Shore." This is presumably one of the two specimens mentioned by 

 Kendall and Radcliffe (1912, p. 154) as MCZ 29436. I have been un- 

 able to locate the other specimen. 



Paratypes. — Easter Island, Hanga Roa: UBC BC65-410 (2 spec- 

 imens), BC65-455 (3), BC65-458 (1); Hanga Pico: UBC BC65-428 

 (2), BC65-438 (1); Vinapu: UBC 65-449 (1); Anekena: UBC BC65- 

 440 (1); Rano Raraku: UBC 65-430 (9), BC 65-429 (2); Cave Bay: 

 MNHN 1942-76 (2); Easter Island (only): BMNH 1913.12.7.10 (1). 



Holotype of Entomacrodun chapmani 



