Fishes of the Western North Atlantic 



^S1 



Trunk at origin of fectoral: breadth 1 1.6, I2.0; height 8.1, 8.5. 



Snout length in front of: outer nostrils 5.7, 5.95 mouth 8.2, 8.0. 



Eye: horizontal diameter 2.1, 2.4. 



Mouth: breadth 7.2, 7.4; height 3.3, 3.7. 



Nostrils: distance between inner ends 3.1, 3.3. 



Labial furrow lengths: upper 2.3, 2.1 ; lower 2.0, 1.8. 



Gill opening lengths: ist 3.0, 1.$; 2nd 3.0, 2.5; 3rd 3.0, 2.5; 4th 2.9, 2.35 5th 



2.5, 2.0. 



First dorsal fin: vertical height 8.5, 8.6 j length of base 14.6, 14.O. 



Second dorsal fin: vertical height 6.0, 6.95 length of base 10.7, 10.4. 



Anal fin: vertical height 3.0, 3.6; length of base 6.4, 6.8. 



Caudal fin: upper margin 21. i, 21.6; lower anterior margin 7.9, 9.3. 



Pectoral fin: outer margin 15. i, 14.7J inner margin 8.7, 9.0; distal margin 1 1.4, 



12.9. 



Distance from snout to: ist dorsal 28.5, 28.55 2nd dorsal 59.8, 59.55 upper caudal 



Figure 43. Mustelus fasciatus, male, 607 mm. long, from Rio Grande do Sul, Brazil (Harv. Mus. Comp. 

 Zool., No. 154, type). A Upper teeth of same, about 6 x. 5 Dermal denticles of same, about 24 x. C Tracings 

 of pectoral fins adjusted to equal lengths along outer margin: dotted line, M. cants, 768 mm. long, from Woods 

 Hole, Massachusetts; solid line, M. schmitti, 578 mm. long, from Muldonado, Uruguay; broken line, M. fas- 

 ciatus, same specimen 3&\n A, B. D Mustelus norrisi, adult male, 643 mm. long, from Florida Keys (Harv. 

 Mus. Comp. Zool., No. 442). E Head of same, from below. F Upper teeth of same, about 7 x. 



