Fishes of the lVester?i Northi Atlantic 



11 



First dorsal fin: vertical height 7.6, 7.4; length of base 5.1, 5.0. 



Second dorsal fin: vertical height 7.3, 7.2; length of base 5.7, 5.6. 



Caudal fin: upper anterior margin 13.7, 13.1. 



Pelvics: origin to tip 17.4, 18.5. 



Distance: from tip of snout to center of cloaca 41.8, 44.3 ; from center of cloaca 



to tip of tail 58.2, 55.7. 

 Interspace between: ist and 2nd dorsals 7.8, 8.0; 2nd dorsal and caudal 6.7, 5.4. 



Figure 19. Zapleryx brevirostris. A Large tubercle and smaller dermal denticles on right-hand shoulder of spe- 

 cimen illustrated in Fig. 18, 17 x. B Dermal denticles from side of tail of female, 450 mm long, from Rio de 

 Janeiro (Harv. Mus. Comp. ZooL, No. 429), about 30 X. C Dermal denticles from lower surface of abdomen 

 of same, about 30 X. 



Disc a little broader (i.i) than long, heart-shaped, its anterior angle to level of 

 fronts of orbits about 105—107°; anterior margins weakly convex opposite eyes, slightly 

 concave opposite spiracles in young specimens and in adult females, but somewhat 

 more deeply so in mature males;*' posterior corners broadly rounded, posterior margins 

 moderately so; posterior corners of pectorals overlapping pelvics by a distance about 

 as great as that between exposed nostrils. Tail from center of cloaca longer (1.2— 1.4) 

 than distance from center of cloaca to tip of snout, about as broad opposite axils of 

 pelvics as distance between outer ends of spiracles; tapering evenly rearward; flattened 

 below and moderately rounded above, each side with a longitudinal dermal fold ex- 

 tending from just posterior to tips of pelvics to a little beyond origin of caudal. 



Dermal denticles on dorsal surface close-set but with skin exposed between; those 



67. It is so shown in Ribeiro's (Fauna brasil., Peixes, 2 [i] Fasc. i, 1923 : pi. 12) photograph of a male with large claspers. 



