Ame7'ican Cic/ilid Genus Cichlosoraa. 67 



C. D. XVII-XrX 8-10. A. VIII-X 7-8. PrjBmaxillary processes 



extending to above iJie anterior margin of eye. 



56. octofasciatum. 



D. I). XV-XVIII 9-12. A. Vl-rX 7-10. 



1. Prsemaxillarv processes extending to above anterior h of eye. 



D. XV-XVU 10-12. A. VI 8-9 ... . 57. urophthalnms. 



2. Prsemaxillary processes extending to above middle of eye or 



beyond. 



a. Last dorsal spine ^ or nearly ^ the length of head ; maxillary 



extending to below anterior margin of e3'e ; D. XVI-XVII 

 9-12. 

 Snout shorter than postorbital part of head (in the 



adult). A. Vl-VItl 8-9 58. trimacukihim. 



Snout as long as postorbital part of head (in the 



adult). A. VIll-lX 7-9 59. Salvini. 



b. Last dorsal spine about f the length of head ; maxillarv ex- 



tending to below anterior \ of eye ; D. XVIII 10. A.VII- 

 VIII 8-9; depth of body 2^-2^ in the length; caudal 

 peduncle |- 1 as long as deep GO. multifasciatum. 



c. Last dorsal spine about 5 the length of head. 



a. Maxillarv extending to below anterior margin or anterior 

 i of eye ; D. XVII-XVIII 9-11. A. VII- VIII 8-9 ; 

 depth of body 2|-2| in the length. 

 Caudal peduncle | as long as deep ; depth of pi"ae- 

 orbital |-f the diameter of eye (in specimens 



of 120-130 mm. in total length) 61. FriedrichstaJdi. 



Caudal peduncle |-* as long as deep ; depth of 

 praeorbital f the diameter of eye (in a speci- 

 men of 115 mm.) or equal to it (in the adult 

 fish) 62. motaguense. 



j3. Maxillary extending to below middle of eye. D. XVIII 10. 



A. VII 8 63. manayuense. 



y. Maxillary extending to below anterior I of eve. 



D. XVIII 12. A. VI 9-10 .... 64. Dovii. 



d. Last dorsal spine \ or nearly ^ the length of head ; maxillary 



extending to below the middle of eye. 

 D. XV 12-13. A. VI 9-10; scales above lateral 



line of the same size as those below it 65. spectabile. 



D. XV-XVI 10-11. A VI 8-9; scales above 



lateral line smaller than those below it ... . 66. Kraussii. 



Subgenus Cichlosoma. 



In the more generalized forms the teeth o£ the outer series 

 in both jaws rather small, scarcely increasing in size ante- 

 riorly. In more specialized forms the teeth of the outer 

 series stronger, regularly and distinctly increasing in size 

 anteriorly. Sometimes the anterior 3 to 6 teeth on each 

 side in the lower jaw enlarged, subequal and rather sharply 

 differentiated from the smaller lateral teeth. In 3 very 

 specialized species (with exceptionally thick lips) the anterior 

 ])air of teeth in the upper jaw very strong, the anterior 2 

 pairs in the lower jaw strongly enlarged, subequal. 



5* 



