364 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 

 Family 3.— SPHYRNID^. 



6. SPHYRNA Rafiuesque. 



12. Sphyrna tudes * Cuvier. M. 



13. Sphyrna zygaena * t Linufeus. M.,P, 



Family 4.— PRISTIDIDiE. 

 7. PRISTIS Latbam. 



14. Pristis perrotteti * Mailer & Heule. M. 

 Chiapam {G anther). 



Family 5.— RHINOBATID^. 

 8. RHINOBATUS Bloch & Schneider. 



15. RhinobatUB glaucostigma * Jordan & Gilbert. M. 

 Gulf of Califoruia [Streets). 



16. Rhinobatus leucorhynchus * Giiutber. P. 

 Panama [Gthr.). 



17. Rhinobatus exasperatus * Jordan & Gilbert. 

 Pauaina [Bradley). 



Family 6.— TORPEDINID^. 



9. NARCINB Heule. 



18. Narcine,* sp. iudoscr. P. 



10. DISCOPYGE Tscbudi. 



19. Discopyge,* sp. indcscr. P. 



Family 7.— TRYGONID^. 

 11. UROLOPHUS Miiller & Heule. 



20. Urolophus muudus * Gill. P. 

 Panama [Gill). 



21. Urclophus asterias" Jordan & Gilbert. M., P. 



22. Urolopbus aspidurus * Jordan &. Gilbert. P. 



23. Urolophus nebulosiis Garman. 

 Colinia [Xantiis). 



24. Urolophus halleri * Cooper. M., P. 

 Panama [Bradley). 



12. DASYBATIS Rafinesque. 



25. Dasybatis longus * Garman. M. 



Acajiulco, Panama [Garman). 



