372 Analytical Synopsis of the Order of Squali. 



3. — Next in order of time, succeeds the revised classification 

 of Linnseus. 



In the first nine editions of the " Systema Naturse" is adopted 

 the arrangement of Artedi. In the tenth edition (1758), he pro- 

 posed the following modification. 



* Dorso spinoso ; pinna ani nulla, 



1. S. acanthias. 



2. S. centrina=Oxynotus centrina Raf. 



3. S. spinax = Spinax niger Cloquet. 



' 4. S. squatina=Rhina squatina Raf. 



* * Dorso mutico, dentibus acutis ; cum pinna ani. 



5. S. zygaena=Cestracion zygaena Gill. 



6. S. tiburorrlleniceps tiburo Gill. 



7. S. galeus=Galeorbinus galeus Bl. 



8. S. canicular Scylliorbinus caniculus Blain. 



9. S, catulus=No. 8. 



10. S. stellaris=Catulus stellaris Sm. 



11. S. glaucus=Cynocephalus glaucus Gill. 



12. S. carcbarias = Carcbarodon lamia Bon. 



* * * Dentibus granulatis. 



13. S. mustelus=:Mustelus laevis Flem. 



14. S. pristis=:Pristis antiquorum Shaw. 



This arrangement is essentially similar to that of Artedi, the 

 chief difference consisting in the difi'erent distribution of some 

 of the species, and especially in the placing of S. acanthias as 

 the first of the genus and the deferring of S. jpristis to the 

 last. 



4. — Lacepede proposed a fictitious genus on the supposed 

 absence of teeth, under the name of Aodon, but Squalus itself 

 remained unaltered. 



5. — Dumeril, in his " Zoologie Analytique," established the 

 genus Squatina for the Squalus squatina of Linnseus, a species 

 which had already been taken for the Rhina of Klein. His cha- 

 racters were thus given — 



