8 4 



PAPERS FROM TORTUGAS LABORATORY vol. xxxiv 



//. Scales in median series before dorsal 4; pre- 



opercular margin strongly serrate . . quadrisquamatus 



ee. A black blotch under opercular spine; a black spot 



on upper part of side below base of posterior rays 



of second dorsal; a black spot or saddle on upper 



part of caudal peduncle at base of caudal 



g. Black spot below base of second dorsal fully 



half as large as eye; a black saddle on caudal 



peduncle; tips of second dorsal, anal, and 



caudal not perceptibly black; 3 rows of scales 



above and 3 below lateral line on caudal 



peduncle maculatus 



gg. Black spot below base of second dorsal smaller 

 and better defined; a definite round spot on 

 upper half of caudal peduncle at base of 

 caudal, no saddle; tips of second dorsal, anal, 

 and caudal black; 5 rows of scales above and 

 6 below lateral line on caudal peduncle . pseiidomaculatus 

 eee. Black bar between bases of posterior rays of second 

 dorsal and anal; another at base of caudal 

 h. Body comparatively short and deep, depth 

 2.8 to 3.2 in standard length; caudal peduncle 

 2.3 to 2.5 in head; head short, deep, not espe- 

 cially depressed above, 2.5 to 2.75 in standard 

 length; gill rakers 12 or 13; pectoral with 



10 rays binotatus 



hh. Body elongate, depth 3.5 to 3.9 in standard 

 length; caudal peduncle 2.9 in head; head 

 long, low, depressed above, 2.5 to 3.1 in 

 standard length; gill rakers 17 or 18; pectoral 



with 12 rays planijrons 



bb. Preopercular margin entire Apogomchthys 



i. Ventral fins short, failing to reach origin of anal, usually 



only to vent alutus 



/'/'. Ventral fins longer, reaching beyond origin of anal, usually 



to or past middle of anal base stellatus 



aa. Dorsal spines normally 9; anal spines 2 Synagrops 



j. Body elongate, depth 4.0 to 4.6 in standard length; eye large, 



2.9 to 3.0 in head; second dorsal and anal scaleless bellus 



Apogon pigmentarius (Poey) 



In Poey's description (Memorias, vol. 2, i860, p. 123) of this species few dif- 

 ferential characters are mentioned. He does write, however, "Toutes les dents en 

 velours." It is surprising, therefore, that the specimen, 43 mm. long to base of 

 caudal (Mus. Comp. Zool. no. 9753), which Poey's memoranda make the type 

 has not all villiform teeth. The teeth in the upper jaw are in a villiform band 

 posteriorly, anteriorly in two rows with 5 or 6 weak canines in the inner row; a 

 band in lower jaw with several at side above tip of articular, somewhat enlarged 



