. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Epigonus Systematics • Mayer 169 Z^A ^ y y. x» Figure 10. Epigonus fragilis, HOLOTYPE, mm SL, CM 3900/FMNH 55204 (from Jordan and Jordan, 1922). Epigonus fragilis (Jordan and Jordan, 1922) Figure 10 Scepterias fragilis Jordan and Jordan, 1922: 45, plate II, fig. 2 (original description; Honolulu market; holotype examined, CM 3900/FMNH 55204). ?Hynnodus fragilis Pietschmann, 1930: 13. Diagnosis. E. fragilis most closely re- sembles E. pandionis but may be dis- tinguished by its shallow body ( SL) and sho
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Epigonus Systematics • Mayer 169 Z^A ^ y y. x» Figure 10. Epigonus fragilis, HOLOTYPE, mm SL, CM 3900/FMNH 55204 (from Jordan and Jordan, 1922). Epigonus fragilis (Jordan and Jordan, 1922) Figure 10 Scepterias fragilis Jordan and Jordan, 1922: 45, plate II, fig. 2 (original description; Honolulu market; holotype examined, CM 3900/FMNH 55204). ?Hynnodus fragilis Pietschmann, 1930: 13. Diagnosis. E. fragilis most closely re- sembles E. pandionis but may be dis- tinguished by its shallow body ( SL) and short, shallow head (length SL, height SL). Unlike £. pandionis, E. fragilis lacks peduncle rings on specimens smaller than 100-120 mm SL. In the past E. fragilis has been confused with Hijnnodus atherinoides, a junior syn- onym of E. occidentalis. E. fragilis may be distinguished on the basis of body depth (see above), pectoral fin counts (16-17), and the absence of a pungent, bony oper- cular spine. Weak opercular armor, to- gether with second dorsal fin counts of 1,10 differentiate E. fragilis from E. treivavasae, E. pectinifer, E. rohustus, E. lenimen, and E. crassicaudus. Gill raker counts of 25-26 separate E. fragilis from all remaining con- geners except E. telescopiis. E. fragilis may be distinguished from the latter by the presence of 7-8 pyloric caeca. Description. E. fragilis is known from only five specimens. Of these, the holotype is of little descriptive value. The specimen is severely dehydrated and has become discolored, brittle, and shrunken. The fol- lowing account is based primarily on two recently captured specimens of E. fragilis (LACM 32668-6 and USNM 207704) and two forms collected by D. S. Jordan in 1921 (SU 23246). The latter are mentioned in the original description of E. fragilis but are not designated as types. All meristic and mensural data are pre- sented in the text. Detailed statistical analyses were not undertaken because
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