172 THE PLAGIOSTOMIA. 



Snout somewhat pointed, length about two and one half times that of 

 the mouth, or of the orbit. Nostrils entirely within the posterior half of the 

 snout; anterior valve produced, rounded at the end. Mouth medium, width less 

 than twice the length, more than two thirds of the length of the snout; upper 

 labial folds about half the length of the jaw, lower shorter. Teeth small, convex 

 on the crown, with a shallow concave indentation on the outer edge, like those 

 of G. mustelus. Length of orbit less than half that of the snout, about equal 

 width of largest gill opening. Hindmost gill opening small, above the pectoral. 

 Pectoral large, if applied to the side subtending less than half of the base of the 

 dorsal. Origin of the dorsal almost directly above the inner angle of the pectoral, 

 farther back than that of G. mustelus, base less than half of the distance from the 

 second dorsal, fin ending about one length of the orbit forward of the bases of the 

 ventrals. Bases of the ventrals little nearer to the base of the first dorsal than 

 to that of the second. Base of second dorsal three fourths of that of the first 

 dorsal, or an equal part of the distance from the caudal. Origin of the anal 

 slightly behind the middle of the base of the second dorsal, fin about half as 

 large, length of base two thirds of that of either the second dorsal or of the dis- 

 tance from the subcaudal. 



Greyish brown with small spots of white, above the lateral line, to uniform. 

 As in G. mustelus, the species to which this one is most closely allied, the spots 

 are small and particularly numerous on the lateral line, and it is said the eggs 

 do not form a placental attachment. 



Total length 32j, snout to abdominal pores 15|, snout to fifth gill opening 

 6§, snout to mouth 2j, and length of caudal 6 inches. 



Tokio, Japan. Alan Owston. 



Galeorhinus fasciatus, sp. nov. 



Trunk moderately robust, body cavity about half of the total length; head 

 broad, flattened below, tapering forward; snout broadly rounded at the end. 

 Nostrils in the hindmost third of the snout, anterior valve with a rounded lobe. 

 Eye small, orbit one fourth of the length of the snout, with a nictitating fold. 

 Spiracle small, distant from the eye about half the length of the orbit. Mouth 

 large, width more than twice the length, and more than three fourths of the 

 preoral length of the snout. Labial folds extending nearly half the length of 

 each jaw, lower longer than the upper. Teeth small, in pavement; crowns 

 smooth, convex, without notch or indentation. Greatest width of gill openings 



