56 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



side in area below and between segmented dorsal fin rays 4 and 16 

 (posterior to ray S in specimens over 40 mm SL); ventral margin of 

 upper lip completely crenulate; lip crenulae number 29-39 (usually 

 30-36). 



Proportional measurements: See tables 3, 4, and 24. 



Only three males, 86, 94, and 121 mm SL, were seen with rugose 

 fleshy modifications of the skin of the anal spines and first to third 

 anal rays. Presumably these males, each the largest in its respective 

 collection, were mature. The largest male examined was 121 mm 

 SL, the largest female 114 mm. Females were about twice as numer- 

 ous as males in all size classes up to that of the largest female. 



The smallest metamorphosed specimen examined, 19.2 mm SL, 

 was well marked with vertical bands on the body. This specimen 

 had two cirri on each side of the nape and vomerine teeth, but I 

 could not see posterior canines in the lower jaw (canines also not 

 present in a specimen 20.5 mm, but present in a specimen 22.5 mm). 

 The largest ophioblennius stage examined, 20 mm SL (the smallest 

 19.5 mm), lacked vomerine teeth and had dark pigment only on top 

 of the head and at the tips of the pectoral rays. Three or four 

 larval canine teeth were present laterally on each side of the lower 

 jaw, the most anterior were the largest on each side. 



A group of smaller ophioblennius larvae that might contain speci- 

 mens of E. marmoratus was collected with the three larvae mentioned 

 (for discussion, see E. strasburgi). 



Color pattern of preserved specimens. — Strasburg (1956, 

 fig. 2) has figured a specimen of E. marmoratus and I present three 

 (pis. 6, 7a, 6). None of these four illustrations adequately portrays 

 color pattern, which is quite variable. There are usually 4^2 pairs 

 of dusky, irregular, vertical bands, or spots, on the body, the half 

 pair at the caudal base. The bands, or spots, may be so poorly 



TABLE 20. — Frequency distribution of number of segmented dorsal and anal 

 rays in specimens of Entomacrodus marmoratus arranged geographically 

 southeast to northwest (for meaning of N and S see methods section) 



