FISHES OF THE PHOENIX AND SAMOAN ISLANDS 269 



Family PARAPERCIDAE 



Genus PARAPERCIS Bleeker 



Parapercis Bleekeb, Ned. Tijdschr. Dierk., vol. 1, p. 236, 18^3. (Type, Sciaenn 

 cyclindrica Bloch. ) 



PARAPERCIS TETRACANTHUS (Bleeker) 



Percis tetracanthns Bi.eeke31, Nat. Tijdschr. Ned. Ind., vol. 4, p. 458, 1853. 



115416, Rose Island, lagoon, June 12 to 20, 1939, 3 specimens. 



115413, Canton Island, reef at ocean, April 25-28, 1939, 3 specimens. 



115414, Canton Island, reef of the widest shallow channel, May 13, 1939, 7 

 specimens. 



115415, Rose Island, reef, June 11-14, 1939, 2 specimens. 



115417, Tutuila Island, reef at entrance Pago Pago Bay, June 2, 1939, 1 

 gpecimen. 



115418, Tan Island, reef at Siulagi Point, June 27, 1939, 7 specimens. 

 52283, Apia, Samoa, Jordan and Kellogg, 3 specimens. 



Family BLENNIIDAE 



KEY TO THE GENERA OF BLENNIIDAE FROM THE PHOENIX AND SAMOAN 



ISLANDS 



la. Body naked, without scales ; snout blunt, rounded. 

 2a. Teeth in upper and lower jaws in a single row, fixed or firm. 



3a. Gill membranes joined to each other across isthmus to form a free fold. 



Blennius Linnaeus 

 3&. Gill membranes joined to side of head, gill opening restricted to side of 

 head, no free fold across isthmus. 

 4a. Dorsal and anal attached to caudal fin ; gill opening extending down- 

 ward at least in front of base of pectoral fin; dorsal XII, 15; anal 

 17 ; canine at each corner of upper jaw evident by lifting up lip ; also 



one at each corner of lower jaw Enchelynrus Peters 



4&. Dorsal and anal never both attached to caudal; gill membranes above 



upi)er angle of base of pectoral fin Petroscirtes Riippell 



2&. Teeth in jaws very fine, numerous, set on gums so that they are easily 

 depressible; gill membranes joined to each other across isthmus to form 

 a free fold. 

 5o. A fringe of small tentacles across nape; pelvic rays I, 4; canines 



present Cirripectes Swainson 



5&. No fringe of tentacles across nape. 



6a. Pelvic rays I, 4 ; tips of rays of caudal fin much exserted ; canines 



present Rupiscartes Swainson 



66. Pelvic rays I, 2 or I. 3; tips of rays of caudal fin barely extending 



past membranes ; canines present or absent Salarias Cuvier 



1&. Body with scales; snout pointed, tapering in front of eyes; three dorsal 

 fins Enneapterygius Rtippell 



Genus BLENNIUS Linnaeus 



Blennius Linnaeus, Systema naturae, ed. 10, vol. 1, p. 256, 1758. (Tj-pt\ Blennius 

 ocellaris Linnaeus, as restricted by Jordan and Gilbert, 1883.) 



KEY TO THE SPECIES OF BLENNIUS FROM THE PHOENIX AND SAMOAN ISLANDS 



lo. Peritoneum pale; no projecting dermal flap near corner of lower lip; dorsal 

 rays XII, 19 ; anal 22 or 23 ; canines present ; soft dorsal not joined to 



