GENUS ENTOMACRODUS — SPRINGER 



133 



with increase in SL (table 64) ; main or longest supraorbital cirrus with 

 all branches mesially (2 specimens only had 1 branch laterally) ; nape 

 with 1 cirrus on each side (2 on one side in 1 specimen) ; predorsal com- 

 missural pores 4-25 (number increasing with increase in SL, table 65) ; 

 preopercular series of pores with all positions with simple pores (4 spec- 

 imens, of 145 examined, each with 1 pair of pores included in series) ; 

 lateral line pores terminating on side in area below and between dorsal 

 fin spine 8 and dorsal soft ray 5 ; ventral margin of upper lip mainly 

 crenulate on lateral thirds, entire to very weakly crenulate on middle 

 third; main (lateral) crenulae usually numbering 7-11 on each side. 



Proportional measurements : See tables 3, 4, and 66, and "Discus- 

 sion." 



Males develop fleshy rugose modifications of the skin of the anal 

 spines and anterior first to third anal rays. If one considers males 

 with these modifications to be mature, the smallest mature male ex- 

 amined was 29.6 mm SL (Swains Island). Mature and immature 

 males may occur in the same collection and in these collections imma- 

 ture males may be as much as 14 mm longer than mature males. 



Largest specimen examined, a male, 54.8 mm SL (Tongatapu) ; 

 largest female was approximately 47.8 mm SL (Tongatapu). Males 

 and females occurred with about equal frequency in collections except 

 for the Swains Island collection, in which males greatly outnumbered 

 females. The smallest specimen examined, 17.7 mm, was not an 

 ophioblennius larva. It had a humeral blotch and vomerine teeth 

 but no canine teeth. 



TABLE 63. — Frequency distribution of number of segmented dorsal and anal rays and 

 gill-rakers of specimens of EntnmacroduH caudofasciatun arranged geographically 



