526 Memoir Sears Foundation for Marine Research 



Anim. NE. U.S., 1929: 14 (general); Jordan, Evermann and Clark, Rep. U.S. Comm. Fish. (1928), 

 2, 1930: 22 (in check list for N. Amer., N. Pacif. form also included) ; ^'ladykov, Contr. Canad. Biol., 

 N. S. S (2), 1933: 5 (Port Burwell, Hudson Strait); Proc. Pan-Pacif. sci. Congr., 5, 1934: 3787, 3788 

 (Hudson Bay region); Bigelow and Schroeder, Canad. Atlant. Fauna, bid. Bd. Canad., 12', 1934: 19 

 (dcscr., range); Brooks, Parasitology, 26, 1934: 259 (parasites); Piers, Proc. N. S. Inst. Sci., 18, 1934: 

 203 (ref. to old Nova Scotia record by Jones, 1882); Vladykov and McKenzie, Proc. N. S. Inst. Sci., 

 '9> '935- 49 (°1'1 Nova Scotia record); Rep. Newfoundland Fish. Res. Lab. (1934), 1935: 79 

 (165/2-ft. spec, Grand Banks); Bigelow and Schroeder, Bull. U.S. Bur. Fish., 48, 1936: 323 (addit. 

 Gulf of Maine records); Liibbert and Ehrenbaum, Handb. Seefisch. Nordeurop., 2, 1936: 288 (size, 

 depths, fishery, N. Europ.) ; White, Bull. Amer. Mus. nat. Hist., 7^, 1937: 43 (ill. after Garman, 

 191 3); MacCoy, New Eng. Nat., 2, March 1939: 25 (photos, stomach contents of ll-ft. spec. Gulf 

 of Maine) ; Fowler, Bull. U.S. nat. Mus., loo (13), 1941 : 276 (refs., descr., but N. Pacif. form also in- 

 cluded) ; Holmgren, Acta Zool., Haft. 1-3, 1941: 28 (skull). 



Scymnus (Laemargus) brevifinna Dumeril, Hist. Nat. Poiss., i, 1865: 456 (descr., ref. to old record for 

 R. Seine estuary). 



Scimrius borealis Van Beneden, P. J., Poiss. Cotes Belg. Parasit., 1870: 10 (parasites, Belgium). 



Laemargus brevifinna Moreau, Nat. Hist. Poiss. France, j, I 881 : 361 (descr., ref. to old record for estuary of 

 R. Seine). 



Somniosus carcharias Garman, Bull. Mus. comp. Zool. Harv., 77, 1888: 85, pi. 20 (mucous canals, no loc, 

 but probably Massachusetts). 



Laemargus (no specific name) Ewart, Trans, roy. Soc. Edinb., 57 (i), 1893: 59, pi. 1, 2 (sensory canals). 



Acanthorhinus carcharias Smitt, Hist. Skand. Fish., 2, 1895: 1 1 67, pi. 52, fig. 3 (descr., habits, fishery, 

 Skand.); Knipowich, Annu. Mus. zool. Acad. St. Petersb., 2, 1897: 154 (Murman Coast, White 

 Sea); Ehrenbaum, Faune IchthyoL, Cons. Explor. Mer., 1930: plate not numbered (descr., ill., distrib. 

 in E. Atlant.). 



Family ECHINORHINIDAE 



Characters. Squaloidea without dorsal fin spines, the teeth with several cusps and 

 similar in the two jaws. 



Genera. One genus, Echinorhinus. It is doubtful whether the characters forming the 

 basis for the subgenus Rubusqualus Whitley, 1931,' are even of specific value. 



Genus Echinorhinus Blainville, 18 16 



Echinorhinus Blainville, Bull. Soc. philom. Paris, 1 8 16: 121 ; type species, E. sfinosus (no authority quoted, 

 but doubtless Gmelin, 1789), equals Squalus brucus Bonnaterre, I 788. 



Generic Synonyms: 



Scymnus (in part) Cuvier, Regne Anim., 2, 1817: 131, footnote. 



Goniodus L. Agassiz, Poiss. Foss., ^, 1838: 94; same as Echinorhinus Blainville, 1816. 



Centrofhorus (in part) Swainson, Nat. Hist. Fish. Amphib. Rept., 2, 1839: 315 (incl. sfinosus") ; not Centro- 



fhorus Muller and Henle, 1837. 

 Rubusqualus (subgenus) Whitley, Aust. Zool., d, 1 931: 31 1; type species, Echinorhinus sfinosus McCoy, 



Australia. 



Generic Characters. Teeth with 3 to 7 cusps, the median much the largest and so 

 strongly oblique that the inner margins form a continuous cutting edge along the jaw 5 der- 

 mal denticles in the form of tubercles or shields with small central spines, scattered singly 



I. Whitley, Aust. Zool., (i, 1931: 311; eye over anterior mouth, heavier tail, dorsal fins closer together and first 

 dorsal originating over the anterior part of the "anal" (sic), instead of over the middle of that fin. 



