2o6 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. V. 



gg. No ocellated black spots on sides. PAGE 



h. Lower lip without trace of a frenum, 



sides without dark vertical bars beani 210 



hh. Lower lip with a frenum, or the an- 

 terior portion not as free as the 

 lateral. 



i. Lower lip with a well developed frenum; 

 tips of ventral fins not reaching first 

 anal spine. 



j. Sides with 9 or 10 dark vertical bars; 

 dorsal spines low, the eighth 3^3 in 

 head, the last one 2^; bases of ver- 

 tical fins with a few dark spots steindachneri 210 



jj. Sides with about 6 dark vertical bars; 

 dorsal spines higher, the eighth 2| 



in head, the last one 2^ bartoni 211 



ii. Lower lip without developed frenum, 

 the lip not as free anteriorly as later- 

 ally; tips of ventrals reaching second 

 anal spine; sides with 7 dark vertical 



bars istlanum 212 



ff. Body deep, its depth 2 to 2% in the length, 

 k. Lower lip without a frenum; dorsal rays 



13 to 15; sides with about 6 dark verti- 

 cal bars evermanni 214 



kk. Lower lip with a frenum. 



I. Head 3^ in body; depth 2; dorsal spines 



14 or 15; teeth in outer series dissimi- 

 lar, some being bluntly conic heterodontum 215 



II. Head 3 to 3^; D. xvi; teeth in outer 

 series similar, pointed. 



m. Anal spines 5, soft rays 8 or 9, dorsal 



fin with i o or 1 1 soft rays cyanoguttatum 215 



mm. Anal spines 4; soft rays n; dorsal 



rays 13 rectangulare 216 



aa. Mouth smaller, low or subinferior; lower jaw 



moderate or weak; maxillary 3 to 4 in head, 

 n. Mouth terminal, the jaw oblique; jaws sub- 

 equal, 

 o. Anal spines 8; tip of ventrals reaching 4th 



anal spine, 

 p. Lower lip without a frenum; a few anterior 



teeth canine-like; preorbital 4^ in head. mojarra 217 



