GENUS ENTOMACRODUS — SPRINGER 



107 



two such canines on each side were present the posterior was about 

 twice the size of the anterior. All the ophioblennius stages had 

 small posterior canines in the lower jaw in relatively the same position 

 as the adult canines. 



The largest specimen examined was 68.3 mm SL, a male, the largest 

 female was 55.4 mm, both specimens from Panama. If one excludes 

 Panamanian specimens from consideration, the largest male examined 

 was 60 mm SL and the largest female was 47 mm. Females slightly 

 outnumbered males in collections at sizes below 41 mm SL; males 

 greatly outnumbered females at sizes over 40 mm. In the Pana- 

 manian collection, females outnumbered males up to 49 mm SL; 

 above 49 mm, males greatly outnumbered females. In most large 

 collections the largest male usually was about 10 mm larger than the 

 largest female. 



Color pattern of preserved material. — ^In specimens with the 

 most developed pattern there are 6}^ pairs of dark bands, or where 

 the members of these pairs are each fused, seven bands, on the sides. 

 The bands are most intense in their midportions (frequently only the 

 midportions are visible) abruptly decreasing in intensity dorsally and 

 ventrally. The dorsal and ventral extensions of the bands may be 

 displaced slightly in relation to the midportions. The posteriormost 

 pair of bands, just anterior to the caudal base, and the anteriormost 

 band (half pair), in the region below dorsal spmes 2-4, are less in- 

 tense than the others and may be absent. Upon entering the dorsal 

 fin, the bands may increase in mtensity but they never extend more 

 than about midway onto the fin. Portions of the dorsal fin above and 

 between the bands are diffusely dusky and paler than the banded 

 portions. The area on the body above the lateral Ime, anterior to 

 the anterior dorsal rays, frequently contains numerous small dark 



