170 THE PLAGIOSTOMIA. 



Commonly with transverse bands 



dorsal origin little behind axil of pectoral 

 teeth smooth, no denticles 



upper labial fold shorter .... fasciatus (page 172) 

 Commonly spotted with black 



dorsal origin behind inner angle of pectoral 



teeth slightly angled, upper, without denticles 



upper labial fold equal . . . punctulatus (page 173) 

 Commonly about uniform 



dorsal origin forward of inner angle of pectoral 



teeth with a low apex and a concavity at each side of it 



upper labial fold shorter .... hmulatus (page 17-4) 

 dorsal origin above the inner angle of the pectoral 



teeth without a produced cusp, slightly concave on inner edge 



upper labial fold longer . . . antarcticus (page 175) 

 dorsal origin forward of the inner angle of the pectoral 

 teeth with notches or denticles 



upper labial fold equal laevis (page 176) 



dorsal origin above the inner angle of the pectoral 



teeth with a shallow concavity on the outward edge 



upper labial fold equal .... californicus (page 177) 

 dorsal origin above middle of inner margin of pectoral 



teeth diverse, upper oblique triangular, notched on outward edge 



upper labial fold little longer .... dorsalis (page 178) 



Galeorhinus mustelus. 



(,', ili us asterias Rondelet, 1554, Pise, p. 376; Aldbovandi, 1613, Pise. & Cet., p. 393. 



Mustelus laevis Salviani, 1554, Aquat., pi. 44. 



Galeus laevis Gesner, 1558, Aquat., p. 726. 



Squalus mustelus Linxe, 175S, Syst., 1, p. 235 (part); 1766, Syst, 1, p. 400; Gmelin, 1789, Linne" Syst., 



1, p. 1492. 

 Smooth dog-fish Brookes, 1763, Nat. hist., 3, Fishes, p. 33. 



Galeus stellatus Valmont, 1768, Diet. hist, nat., 4, p. 746; Ddhamel, 1777, Traite, 3, sect. 9, p. 300. 

 Smooth hound Pennant, 1769, Zool., 3, p. 91; 1776, Zool., 3, p. 102, pi. 16; Yarrell, 1836, Brit, fishes, 



1, p. 393; Thompson, 1839, Ann. nat. hist., 2, p. 272; Couch, 1867, Brit, fishes, 1, p. 47, pi. 10. 

 he squale emissole Lacepede, 1798, Poissons, 1, p. 242; Blainv., 1830, Poiss. Fr., pi. 20, f. 2, pi. 20, f. 1, 



lentillat. 

 Galeus mustelus Rafinesque, 1810, Ind. itt. Sic., p. 46 (name); Leach, 1S14, Mem. Wern. soc, 2, 



p. 63, pi. 2, f. 3. 

 Squalus (Galeorhinus) mustelus Blainv., 1816, Bull. Soc. philom., p. 121; 1830, Poiss. Fr., p. 81. 

 Mustelus stellatus Risso, 1826, Hist. nat. 3, Poissons, p. 120. 

 Squalus (Galeorhinus) hinnulus Blainv., 1830, Poiss. Fr., p. S3. 

 Squalus (Mustelus) stellatus Voigt, 1832, Thierreich., 2, p. 508. 



