of the Genus Creiiicichla. 499 



Rio Guapoid (Ann. Carncoio Mas. vii. 1911, p. 31'4, pi. Iviii.) 

 and also Crenicichla simoni frojn the Paraguay {t.c. p. 34o) ; 

 the latter is a synonym of Batrachops ocel/atus, Perugia. 

 Several new species of Crenicichla iiave been described, and 

 those tiiat I reiiard as valid, tofjcther with two described 

 below as new, bring up the number from sixteen to twenty- 

 two. 



Synopsis of the Species. 



I. Scales on sides ctenoid ; nostril not nearer to end of suout than to 

 eye. 



A. 38 to 72 scales in a longitudinal series below lateral line. 



1 . Maxillary extending beyond vertical from anterior margin of 



eye. 



a. D. XVI-XX 13-10. Interorbital width \ (adult) or { (young) 



the length of head. Often a dark spot or ocellus between 

 pectoral tin and lateral line. 

 Less than 50 scales in a lateral longitudinal 



series 1. lepidota, Heck., 1840. 



50 to 02 scales in a lateral longitudinal 



series 2. saxatilis, Linn. 



b. D. XVIII-XXI 13-15. Interorbital width \ (adult) or i or 



less (young) the length of head. An ocellus on lateral line 

 above pectoral hn. 

 D. XVIII-XIX 13-15 ; 3i or 4 scales be- 

 tween last dorsal spine and lateral 



line 3. alta, Eigenm., 1912. 



D. XIX-XXI 1.3-14 ; 4A to 6 scales be- 

 tween last dorsal spine and lateral line. 4. lucitis, Cope, 1871. 



c. D. XX-XXII 11-13 ; no ocellus above the pectoral. 

 Maxillary extending to below middle of 



eye ; no ocellus on dorsal fin 5. ffeayi, Pellegr., 1003. 



Maxillary extending to below anterior 5 of 



eye; a large ocellated spot on poste- [1911. 



rior part of spinous dorsal G. dorsocellata, Ilaseman, 



2. Maxillary extending to vertical from anterior margin of eye ; 



63 to 70 scales in a lateral longitudinal series, 8 to 12 from 

 first and 3 to 6 from last dorsal spine to lateral line. 

 D. XX-XXIII12-13. A. Ill 8-10. Dia- 

 meter of eye 4 to 7 in length of head 



(in specimens of 90 to 300 mm.) .... 7. lacustris, Cjisteln., 1855. 

 D. XX-XXII 10-11. A. HI 7-8. Dia- 

 meter of eye 3^ to 4 in length of head [1840. 

 (in specimens of 98 to 225 mm.) .... 8. maerophthalmus, Heck., 



3. Maxillary not extending to vertical from anterior margin of 



eye ; 57 to 65 scales in a lateral longitudinal series, 6 fi-om 

 first and 2 (rarelv 3) from last dorsal spine to lateral line. 

 D. (XVUI) XX-XXI 10-11 (13). A. HI 7-9. 



a. Anterior teeth in or 6 series; no ocellus on dorsal fin. 

 Last dorsal spine ^ length of head 9, icallacii, Kegau, 1005. 



