Fishes of the Western North Atlantic 



475 



Gill o-pening lengths: ist 1.3, 1.9; 2nd i.i, 1.6; 3rd i.i, 1.6; 4th 1.2, 2.0; 5th 



1.9,2.4. 



First dorsal fin: vertical height 7.8, 8.0; length of base 8.6, 9.2. 



Second dorsal fin: vertical height 5.3, 4.9; length of base 6.9, 6.0. 



CflW<?/ ^»; uppermargin 21.8, 21.4; lower anterior margin 12.0, 12.0. 



Pectoral fin: outer mzr gin 14.7, 15.9; inner margin 1 1.2, 11.6; distal margin 12.4, 



10.4. 



Distance from snout to: ist dorsal 29.6, 27.2; 2nd dorsal 61.3, 64. i ; upper caudal 



78.2, 78.6; pectoral 21.7, 21.4; pelvics 46.0, 46.8. 



Interspace between: ist and 2nd dorsals 24.0, 27.5; 2nd dorsal and caudal 10.7, 



9-8. 



Distance from origin to origin of: pectoral and pelvics 25.3, 27. i ; pelvics and cau- 

 dal 31.3, 30.0. 



Trunk slender, as in other members of the genus, its height at ist dorsal only about 

 ^/7 its length to origin of caudal. Body sector only a little longer than tail sector (much 

 longer than tail sector in acanthias), without mid-dorsal ridge. Caudal peduncle strongly 

 flattened below, with an obscure longitudinal ridge low down on each side (much as in 

 acanthias). Upper precaudal pit strongly marked, but no lower pit. Dermal denticles close- 



FiGURE go. A Dermal denticles of Squalus cubensis, illustrated in Fig. 89, about 80 x. B Dermal denticles of 

 adult female, from Cuba (Harv. Mus. Corap. Zool., No. 1458), about 70 x. C Embryo, about 203 mm. long, 

 from near Havana, Cuba (Harv. Mus. Comp. Zool., No. 1459), about 0.6 x. 



