396 FISHES 



stoma have been found in the Bahama Channel, also Pseudoscopelus in the 

 Old Bahama Straits. 



Family BRANCHIOSTOMATID^ (Lancelets). 

 AsYMMETRON LUCATANUM Andrews. 

 This form has been found at Bimini and Nassau. Adult and young were 

 obtained by Dr. Andrews, found swimming at the surface in the evening in 

 June and July, 1893. It was found also in calcareous sand. 



Family GINGLYMOSTOMIDiE (Nurse Sharks). 



GiNGLTMOSTOMA ciKHATUM Gmelin (Nurse Shark). 



Large shark abundant about the coral reefs of the "West Indies and on the 



west coast of Mexico. A female of this species was taken by the Expedition at 



Green Cay on June 29, 1903. It was 7 feet 9 inches long -and contained 



seventeen egg capsules. Numerous specimens were seen. 



Family GAL.EIDJE (Requiem Sharks). 

 Htpopkion beevirosteis Poey (Short-nosed Shark). 



This shark grows to a length of 7 feet ; it ranges throughout the West In- 

 dies and was taken by the steamer Albatross at Watlings Island, March 5, 1886. 



Caechaehinus obscukus Le Sueur (Dusky Shark). 

 Middle Atlantic Ocean. Grows to a length of 9 or 10 feet. Numerous 

 examples of what the writer took to be this shark were observed north of Abaeo 

 Island. They followed the wake of the vessel, often coming to the surface close 

 by, affording a good target for the rifles aboard, but seemed to be little disturbed 

 by the bullets shot at them. 



Family SPHYRNID.a3 (Hammer-headed Sharks). 

 Sphtrna tibueo Linnaeus (Shovel-head Shark). 

 The maximum length of this shark is about 5 feet; it has an exceedingly 

 wide range, occurring from the coast of Long Island, throughout the West In- 

 dies, and across the Pacific to China. The steamer Albatross secured speci- 

 mens north of Abaco in 1886. 



Family DASYATID^ (Sting Rays). 

 Ueolophus jamaicensis Cuvier (Eound Sting Eay). 

 This form occurs throughout the West Indies, and was obtained by the 

 Expedition at Nassau, and at the eastern end of Hog Island. 



