GALEORHINUS CAIJFORNICUS. 177 



second dorsal more than half as large as the first, about twice as large as the anal, 

 the origin of which is below the middle of the base and the produced extremity 

 of which reaches farther back than that of the dorsal. Caudal little more than 

 one fifth of the total; subcaudal lobe rather feebly developed but increasing with 

 age; a notch behind the subcaudal. Eggs small, supplemented by a placental 

 attachment. 



Total length 23, snout to pores lOj, snout to fifth gill opening 4i, snout to 

 mouth Ig, and caudal 5 inches. 



Back brown, light greyish to yellow or olive; young, up to two feet in length, 

 commonly with black tips on dorsals and caudal and with light margins behind 

 the fins; lower surfaces white to yellow or grey. 



Described specimens from Nice, France, collected by Prof. C. Bellotti. Spec- 

 imen figured from Long Island Sound, New York, secured by Eugene N. Fischer. 



Galeokhinus californicus. 



Mustelus californicus Gill, 1864, Proc. Acad. nat. sci. Phil., p. 148; Jordan & Gilbert, 1882, Proc. 



U. S. nat. mus., 5, p. 110; 1883, Bull. 16, U. S. nat. mus., p. 20, 370. 

 Mustelus hinnulus Jordan & Gilbert, 1881, Proc. U. S. nat. mus., 4, p. 31. 

 Galeus californicus Jord. & Everm., 1896, Bull. 47, U. S. nat. mus., p. 30. 



Head tapering from the spiracles; snout narrow but broadly rounded at the 

 end, length one and one third times the width of the mouth, or two and three 

 fifths times the length of the orbit. Nostrils entirely in the posterior half of the 

 snout; anterior valve with a broad rounded lobe. Mouth medium; labial 

 folds not half the length of a jaw, equal, lower extending farther forward. Teeth 

 like those of G. mustelus broad with a shallow concavity on the outer edge and 

 no denticle. Width of largest gill opening less than the length of the orbit. 

 Pectorals broad, width two thirds of the length, outer angle rather sharp, not 

 reaching below the middle of the dorsal base, inner broadly rounded, hind margin 

 concave. Origin of the dorsal above the inner angle of the pectoral, base about 

 half as long as the interdorsal space, end of fin reaching a vertical from the ven- 

 trals, hind margin somewhat oblique, upper angle blunted. Base of second 

 dorsal four fifths as long as that of the first, or less than half the distance from 

 the caudal, middle above the origin of the anal, fin shaped like the first dorsal. 

 Base of the anal about two thirds as long as that of the second dorsal, extending 

 half the length of the orbit farther back, nearly equal the distance from the 

 caudal; caudal one fifth of the total length, subcaudal lobe weakly developed. 



Ashy brown ; lower fins with lighter borders ; lower surfaces white. 



