32 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



with the seine. It reaches a length of about 3 feet and a weight of 25 

 pounds. It yields but very little oil, and is considered wholly worthless 

 by all fishermen. 



12. Galeorhinus galeus (Linnseus) Blainville. — Oil Shark; White Shark. 



From Cape Mendocino southward; very abundant everywhere in bays 

 and lagoons during the summer. It brings forth its young from May to 

 August, entering shallow bays for this purpose. It is taken in large 

 numbers for its fins and its oil at Soquel, Monterey, and especially at 

 Westminster and Newport, in Los Angeles County. It is usually taken 

 with book and line, herring and other silvery fish being the best bait. 

 It reaches a length of 5 or 6 feet and a weight of 50 pounds, although 

 most of those taken range from 30 to 40. A single liver makes three- 

 fourths to one gallon of oil. The pectoral, dorsal, and caudal fins are 

 taken oft' and dried in the sun. The Chinese buy these at about 15 cents 

 a pound when dried. They strip off the skin and remove the fleshy part, 

 and the gelatinous rays of the fin are valued by them very highly for 

 soup, selling when prepared at about $1.50 per pound. The fins of no 

 other American shark are considered valuable by the Chinese. 



13. Galeocerdo tigrinus Miiller & Henle. — Man-eater Shark. 



From San Diego southward. The jaws of a large example taken 

 near San Diego were seen. 



14. Carcharhinus glaucus (Linnseus) Jordan & Gilbert. — Blue Shark, 



A young specimen taken near San Francisco is in the Museum of the 

 California Academy of Sciences, and the jaws of an adult taken near 

 Seattle are in the Museum of the University of Washington Territory. 



15. Eulaniia lamia (Risso) Gill. — Bay Shark. 



A partially grown specimen and the jaws of an adult Individual ob- 

 tained at San Diego. 



Family SPHYENID^. 



16. Sphyrna zygeena (Linnains) Rafinesqiie. — Hammer-head Shark. 



A specimen of this species was obtained by Dr. J. G. Cooper at San 

 Pedro, and sent to the United States National Museum. 



Family ALOPIID^. 



17. Alopias vulpes (Gmelin) Bonaparte. — Thresher. 



Occasionally taken at San Francisco and in Monterey Bay. Probably 

 most abundant at Sequel, but seen by us only at Monterey. 



Family LAMNID^. 



18. Lamna cornubica (Linnseus) Miiller & Henle. 



A single specimen obtained at San Francisco. Another was taken 

 last year at Santa Cruz, and a drawing of it made by Dr. C. L. Ander- 

 son. 



