GENUS ENTOMACRODUS — SPRINGER 



45 



If males with rugose anal elements are considered to be mature, 

 then both mature and immature males may occur in the same col- 

 lection, and in these collections immature males may be as much as 

 15 mm longer than mature males. 



The largest male examined was 149 mm SL, and the largest female, 

 153 mm. Males and females occurred with relatively equal frequency 

 in the various size classes. The smallest specimen examined was a 

 nonophioblennius stage juvenile, 22.9 mm, with the upper lip crenulae 

 restricted to the middle third of the ventral lip margin. 



Color pattern of preserved specimens. — This species has the 

 most complex color pattern of all the members of its genus (see 

 pis. 2, 3). Underlying the vermiculated pattern there seem to be 

 53^^ to 63^2 pairs of bands on the body (the members of a pair coalesce 

 at their midportions) . The bands are positioned on the sides some- 

 what similarly to the bands of other species of Entotnacrodus. 



The color pattern imdergoes extreme ontogenetic change (pi. 3). 

 At 22.9 mm, a size at which specimens of most of the other species 

 show indications of their adult color pattern, E. permiculatus is 

 uniformly pale. One specimen, USNM 72735, about 24 mm, in poor 

 condition, did show indications of a faded pattern. Up to about 50-70 

 mm, specimens exhibit a loose network of dark lines on the body that 



TABLE 12. — Frequency distributions of pseudobranchial filaments and gill-rakers 



