2 8o Memoir Sears Foundation for Marine Research 



fresh condition, from a public aquarium known as the "Aquarial Gardens," the exhibits 

 for which came from "off the coasts of Massachusetts and Rhode Island."" 



Remarks. We refer this species to Paragaleus Budker, 1935, rather than to Hemi- 

 galeus Bleeker, 1852 (in which genus Garman placed it), because of the conformation 

 of its lower teeth j Carman's description of the latter as having "erect narrow cusps on 

 broad bases, without denticles"" applies only to those in the front of the mouth, and not 

 to those along the sides of the jaw as noted above. 



Synonyms and References: 



Hemigaleus ■pecloralis Garman, Bull. Mus. comp. Zool. Harv., 46, 1906: 203 (descr., oif the coast of Massa- 

 chusetts or Rhode Island) ; Mem. Harv. Mus. comp. Zool., 36, 191 3: 1 50, pi. 4, fig. I-5, pi. 50, fig. 9, 

 pi. 52, fig. 2, pi. 56, fig. 4 (descr., ill. of type spec.) ; White, Bull. Amer. Mus. nat. Hist., y4, 1937: 

 124, pi. 13, fig. g (class., tooth). 



Genus Prionace Cantor, 1849 



Prionace Cantor, J. Asiat. Soc. Beng., t8, 1849: 1381; proposed in substitution for Prionodon Muller and 

 Henle, 1 841, preoccupied by Horsfield, 1823, for fossil mammals; type species, Squalus glaucus Linnaeus, 

 1758, designated by Jordan, Genera Fish., 2, 1919: 242. 



Generic Synonyms: 



Squalus (in part) Linnaeus, Syst. Nat., t, 1 75 8: 235. 



Galeus Valmont, Diet. Hist. Nat., /, 1768: 371 ;^ type species, G. glaucus Valmont. 



Carcharias (in part) Rafinesque, Indice Ittiol. Sicil., 1810: 45; Cuvier, Regne Anim., 2, 1817: 126. 



Carcharhinus (in part) Blainville, Bull. Soc. philom. Paris, 1 81 6: 121 ; and many subsequent authors. 



Prionodon (in part) Muller and Henle, Plagiost., 1841: 35.^ 



Cynocefhalus Gill, An. N. Y. Lye, 7, 1862: 401 ;' type species, Squalus glaucus Linnaeus, 1758. 



Galeus Garman, Mem. Harv. Mus. comp. Zool., 56, 1913: 145 ;* not Galeus Rafinesque, 1810 (see discussion, 



footnote I, p. 214). 

 Glyfkis Fowler, Mem. Bishop Mus., 10, 1928: 19; type species, Squalus glaucus Linnaeus, 1 75 8; Bull. U.S. 



nat. Mus., lOO (/j), 1941: 178; not Glyfhis L. Agassiz, Poiss. Foss., 5, 1843: 243.° 

 Carcharhinus Whitley, Fish. Aust., i, 1940: 106, 107 (restricted to Squalus glaucus Linnaeus, 1758, and to 



Prionace mackei Phillipps, 1 93 5, which appears to be identical with the latter). 



6. Mem. Harv. Mus. comp. Zool., ^6, 191 3: 150, 151. 



1. By Opinion 89 of the International Commission on Zoological Nomenclature (Smithson. Misc. Coll., 75 [3], 

 1925: 27), Valmont's names are not available, because they were not properly binomial. 



2. Preoccupied by Horsfield, 1823, for fossil mammals. 



3. This pre-Linnaean name, first proposed by Klein (Pise. Natural., Gedoni, 1742), was revived by Gill to replace 

 Prionace Cantor, 1849. 



4. Carman's revival of Galeus Valmont, 1768, is not acceptable, according to the International Commission on Zoo- 

 logical Nomenclature; see footnote i, p. 214. 



5. The fossil shark's teeth, to which L. Agassiz gave the name Glyfhis, and which he illustrated (Poiss. Foss., j, 1838: 

 pi. 36, fig. 10-13), are not at all suggestive of the corresponding teeth of Prionace, being cylindrical near the 

 base and with cutting edge confined to the lanceolate, laterally expanded tip. But they do resemble closely the 

 anterior lower teeth of Carcharias {Prionodon) glyf/iis Muller and Henle, 1841 (see footnote 4, p. 321). 



