. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Ei'iGONus Systematics • Mayer 159. Figure 4. Epigonus macrops, mm SL, USNM 207679. and E. telescopus but also suggest an af- finity between P. constanciae and E. tre- wavasae Poll, 1954. As is shown in Table 5, dorsal and pectoral fin counts fall within the range of E. treicavasae rather than E. telescopus. Tortonese and Queirolo's figure similarly shows the holotype to possess a sharp opercular spine, short DJ, and long PJ—all characteristics of E. treicavasae. Mensural data fail to differentiate P. constanciae
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Ei'iGONus Systematics • Mayer 159. Figure 4. Epigonus macrops, mm SL, USNM 207679. and E. telescopus but also suggest an af- finity between P. constanciae and E. tre- wavasae Poll, 1954. As is shown in Table 5, dorsal and pectoral fin counts fall within the range of E. treicavasae rather than E. telescopus. Tortonese and Queirolo's figure similarly shows the holotype to possess a sharp opercular spine, short DJ, and long PJ—all characteristics of E. treicavasae. Mensural data fail to differentiate P. constanciae from either species. Unlike E. treicavasae but like E. telescopus, the holo- type lacks lingual teeth (Giglioli, 1880). In view of the uncertainty surrounding P. constanciae, a closer study of this form must be undertaken. The problem is all the more pressing, because E. treicavasae is recorded from the Mediterranean for the first time in this paper. Common names. Comprehensive lists of common names for E. telescopus are pro- vided by Doderlein (1889), Nobre (1935), and Bini (1968). Three names not re- corded in these works are "Mejluza"—Gran Canaria (Steindachner, 1891), "Devil-fish" —North Sea area (Ehrenbaum, 1928), and "Big-eyed cardinal fish"—New Zealand (Anonymous, 1961). Epigonus macrops (Brauer, 1906) Figure 4 Oxijdon macrops Brauer, 1906: 288, fig. 172 (original description; Indian Ocean, land-locked sea on west coast of Sumatra, VALDIVIA Sta. 186, 03°21'01"S, 101°11'05"E, 903 m; syntype examined, ZMB 17678); Weber and de Beau- fort, 1929: 351, fig. 81; Nomian, 1939: 60. Diagnosis. E. macrops may be distin- guished from all congeners by its low gill raker counts (17-21). It is further char- acterized by eight fully developed first dorsal fin spines and eight pyloric caeca, one of which may function as a lumin- escent organ. Description. Meristic values presented in Table 6; regression data for morpho- metric traits p
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