Fishes of the Westerfi North Atlantic 4.37 



from New York (Harv. Mus. Comp. Zool., No. 136). Female, 687 mm., from Nahant, 

 Mass. (Harv. Mus. Comp. Zool, No. 1159). 



Trunk at origin of pectoral: breadth 8.2, 8.9; height 9.0, 10.2. 



Snout length in front of: outer nostrils 5.9, 5.45 mouth 6.9, 6.1. 



Eye: horizontal diameter 2.4, 2.2. 



Mouth: breadth 7.6, 7.1 j height 4.2, 4.4. 



Nostrils: distance between inner ends 19.7, 20.6. 



Labial furrow length: lower 0.5, 0.6. 



Gill opening lengths: ist 2.2, 2.5; 2nd 2.4, 2.5; 3rd 2.5, 1.6; 4th 2.5, 2.5; 5th 



2.0, 2.1. 



First dorsal fin: vertical height ii.i, 12.4; length of base 9.7, 9.5. 



Second dorsal fin: vertical height 2.4, 2.35 length of base 3.2, 3.3. 



Anal fin: vertical height 3.7, 3.5; length of base S-2ij 4-6. 



Caudal fin: upper margin 30.2, 30.6 j lower anterior margin 1 1.6, 13.2. 



Pectoral fin: outQv mzrgm 12.O, 12.55 inner margin 4.4, 4. 1 5 distal margin 9.2, 9.5. 



Distance frotn snout to: ist dorsal 27.3, 28.35 2nd dorsal 60.2, 60.55 upper caudal 



69.8, 69.45 pectoral 22.1, 21.35 pelvics 47.5, 46.55 anal 57.8, 58.0. 



Figure 85. Sfhyrna zygaena, female, 687 mm. long, from Nahant, Massachusetts (Harv. Mus. Comp. 

 Zool., No. 1 1 59). A Upper and lower teeth, left-hand side, about 2.5 x. B Second upper tooth. C Ninth 

 upper tooth. D Third lower tooth. E Ninth lower tooth. B-E, about 5 x. 



