72 



ANNUAL REPORT OF 



List of Fossil Fishes occurring in the 

 Alpine Muschelkalk at Perlcdo. 



1. Lepidotus serratus Bell. 



2. pectoralis Bell. 



3. Allolepidotus rueppelli (Bell.). 



4. nothosomoides 

 Deecke. 



5. Semionotus brevis Bell. 



6. balsami Bell. 



7. inermis Bell. 



8. dubius Bell. 



9. altolepis Deecke. 



10. bellotti Riippel. 



11. irof^ Bell. 



12. hermesii Bell. (MS.). 



13. lepisurus Bell. (MS.). 



14. Archceosemionotus connectens 



Deecke. 



15. Pholidophorus rueppelii Bell. 



16. oblongiis Bell. 



17. lepturus Bell. 



18. " porroi Bell. 



19. curioni Bell. 



20. Urolepis macroptera Bell. 



21. " microlepidotus Bell. 



22. " elongata Bell. 



23. Heptanema paradoxum Riippel. 



24. Belenorhynchus macrocephalus 



Deecke. 



£ij£ 0/ Fossil Fishes occurring in the 

 Newark Series. 



1. Semionotus ovatus (W. C. Red- 



field). 



2. robustus (Newb.). 



3. agassizii (W. C. Red- 



field). 



4. gigas (Newb.). 



5. fultus (Ag.). 



6. tenuiceps (Ag.). 



7. micropterus (Newb.). 



8. lineatus (Newb.). 



9. elegans (Newb.). 

 10. braimi (Newb.). 



ii. Acentrophorus chicopensis Newb. 



12. Catopterus gracilis J. H. Redfield. 



13. rediieldi Egerton. 



14. Dictyopyge macrura (W. C. Red- 



field). 



15. Ptycholepis marshi Newb. 



16. Diplurns longicaudatus Newb. 



Systematic Descriptions, 



Order ACTINOPTERYQ1I. 1 



Family SEMIONOTID^. 



Trunk more or less deeply fusiform, rarely cycloidal. Cranial 

 and facial bones more or less robust, and opercular apparatus 

 complete. Gape of mouth small, teeth styliform or tritoral. 

 Notochord persistent, vertebras not more than rings. Fin-rays 

 robust, fulcra large, dorsal fin not extending more than one-half 

 the length of the trunk. Scales rhombic, except occasionally in 

 the caudal region. 



1 For sake of convenience, the two most important genera, Semionotus 

 and Catopterus, are here treated slightly out of their usual order, the remain- 

 ing genera, which are of excessively rare occurrence, being placed after them. 



