2 PAPERS FROM TORTUGAS LABORATORY vol. xxxiv 



p. 58), who, reporting investigations made in the Florida Keys, gave a rather full 

 life history of the nurse shark. 



Dr. Longley's collection contains 2 embryos: a male, 130 mm. long, with well 

 developed barbels and many jet-black round spots, and a very immature one, 

 80 mm. long. The smaller embryo, with long, fringelike external gills, already 

 has the characteristic barbels well developed. On the abdomen are prominent 

 cross-grooves, which are visible, but much less prominent, on the larger embryo. 

 The fins are all well developed and occupy the same relative positions as in the 

 adult. The only color markings on the 80-mm. embryo are two or three obscure 

 vertically elongated dusky spots on the lower part of the side. 



Of wide distribution; common in the West Indies and on the south Atlantic 

 coast of the United States. S. F. H. 



Family CARCHARIIDAE. Gray Sharks 



Carcharias obscurus (LeSueur) 



Dr. Longley's field notes state that 2 specimens, both males, 75 and 135 cm. 

 long, were taken with hooks and lines on a reef, at night. 



Inhabits the coast from the middle Atlantic states northward, apparently stray- 

 ing southward. S. F. H. 



Galeocerdo tigrinus Miiller and Henle. Tiger shark; leopard shark 



Two tiger sharks were taken, one 3 m. and the other 2.4 m. long, both caught 

 off the Laboratory dock. 



The larger shark was slaty above, whitish underneath, and the sides from 

 pectoral to base of tail were marked with faint dark vertical bands. The smaller 

 one, a female, had dark spots surrounded by light reticulations. The larger shark 

 had fed on a man-of-war bird and two ham bones. 



Known from tropical seas, straying northward. S. F. H. 



Scoliodon terrae-novae (Richardson). Sharp-nosed shark 



This fish was reported from Tortugas by Jordan and Thompson (Bull. U. S. 

 Bur. Fish., vol. 24, 1904 (1905), p. 232) from a single fetal specimen. 

 Common on the Atlantic coast of the United States. S. F. H. 



Hypoprion brevirostris Poey 



Dr. Longley's field notes state that 2 specimens were caught, one 195 cm. and 

 the other 165 cm. long. The 195-cm. shark, after it had been out of the water 

 about 2 hours, was generally ashy gray above and whitish beneath; pectorals 

 white beneath, except for distal third of their length, which was ashy gradually 

 passing into the ventral white; under faces of ventrals of same colors, with upper 

 surface distinctly darker than sides of body above them. 



Known from the West Indies and the south Atlantic coast of the United 

 States. S. F. H. 



