4 



POEY. 



ORDO 4. — Malacopteri abdominales, 



Series 1. — Cyprinoides (54). 



Series 2. — Salmonoides (55-59). 



Series 3. — Clupeoides (60-62). 

 ORDO 5.— Apodes (63-67). 

 ORDO 6. — Plectognathi. 



Series 1. — Scleroderma (68-69). 



Series 2. — Gymnodontes (70-71). 



Series 3. — Ostracoderma (72). 

 ORDO 7.— Lophobranchii (73-74). 

 Subclassis 2. — Ganoidei. 

 ORDO. Holostei (75). 

 GLASSIS 2 — Elasmobranchii. 



SIJPERORDO 1. — Holocepliali (76). 

 SUPERORDO £. — Plagiostomi. 



ORDO 1.— Pleurotremi (77-84). 



ORDO 2.— Hypotremi (85-90). 



