270 BULLETIN 180, UNITED STATEiS NATIONAL MUSEUM 



caudal fin ; nasal tentacle short, simple ; cirrus on each eye simple, as long as 

 diameter of eye ; no cirrus on nape ; crest undeveloped ; depth 5% to 5Ys ; 

 head about i-zii ; eye 3% ; height of longest soft dorsal ray 1% times in 

 head ; pelvic rays I, 2 or I, 3 ; pectorals 14, tenth ray longest ; spiny dorsal 

 continuous with soft dorsal or only a slight emargination between the 

 two fins ; color pale ; most conspicuous color patterns are six or seven 

 obscure bars or distinct blotches along m.idsides of body and three narrow 

 transverse dark lines across chin and throat ; narrow black line across 

 chin between corners of mouth ; second bar from cheeks across middle of 

 gill membranes, tliird along rear margin of gill membranes but usually 



absent below isthmus Blennius rhabdotrachelus Fowler and Ball 



16. Peritoneum black ; soft dorsal not joined to caudal ; canines present ; no 

 dermal flap near corners of lower lip; dorsal rays XII, 18 or 19 (usually 

 18) ; anal 22 or 23 ; nasal tentacle small, simple ; cirrus on each eye, simple, as 

 long as eye diameter ; no cirri on nape ; crest indicated as a slight ridge 

 on males ; depth 5^2 ', head 4% ; eye SVs ', height of longest ray of soft 

 dorsal 1% in head; pelvic rays I, 2 or I, 3; pectorals 14, tenth ray longest; 

 spiny dorsal continuous with soft dorsal or only a slight emargination 

 where the fins join ; color pale, about seven dusky bars with pigment in- 

 tensified along the midaxis to form blackish blotches; above these along 

 base of dorsal the bars are double, and between each two black blotches 

 along midaxis anteriorly on body are small black spots ; base of caudal fin 

 with a blackish spot; lower rays of caudal darker than upper rays; pec- 

 toral plain, the base with a few white spots, similar to white spots on 

 head ; white spots, ringed with black line, arranged in a row behind and 

 below eye and irregularly in two rows on opercular apparatus; spiny 

 dorsal with a longitudinal blackish line or narrow band halfway out on 

 rays, below this three to five blackish areas, rest of fin pale ; soft dorsal 

 with the bars on body extending up on basal third of this fin ; anal, pec- 

 toral, and pelvics pale ; sometimes head darker than rest of body ; a wide 

 pigmented band extends across chin and gill membranes below. 



Blennius snowi Fowler 



BLENNIUS RHABDOTRACHELUS Fowler and Ball 



Blennius rhaMotrachehis Fowler and Ball, Proc. Acad. Nat. Sci. Philadelphia, 

 1924, p. 272. 



115509, Enderbury Island, reef. May 15-19, 1939, 57 specimens. 

 115505, Swains Island, reef, May 3-9, 1939, 32 specimens. 



115511, Canton Island, lagoon, April 23 to May 12, 1939, 1 specimen. 



115407, Canton Island, reef, ocean side, April 20-28, 1939, 40 specimens. 



115512, Rose Island, reef, June 11-14, 1939, 23 specimens. 



115408, Tau Island, reef at Siulagi Point, June 27, 1939, 1 specimen. 



115510, Hull Island reef, July 12-15, 1939. 64 specimens. 

 11550C, Hull Island, channel, July 8-12, 1939, 10 specimens. 



BLENNIUS SNOWI Fowler 



Blennius snowi Fowi.ee, Mem. B. P. Bishop Mus., vol. 10, p. 431, fig. 71, 1928. 



115502, Canton Island, reef at ocean, April 25-28, 1939, 61 si>ecimens. 

 115504, Swains Island, reef. May 3-9, 1939, 46 si)ecimens. 



115500, Enderbury Island, reef. May 15-19, 1939, 107 specimens. 



115503, Hull Island, channel, July 8-12, 1939, 33 .specimens. 



