152 THE PLAGIOSTOMIA. 



spicuous, upper little longer than the lower but less than a third of the width of 



the mouth Spiracle small, larger than the pores, behind the orbit about half 



the diameter of the eye. Pectoral shorter than the head, less than twice as long 



as broad, falciform, blunted, extending below the middle of the dorsal. Dorsal 



little nearer to the pectoral than to the ventrals, as high as long, upper angle 



blunted. Origin of second dorsal little in advance of that of the anal, fin more 



than half the size of the first dorsal. Anal more than twice the length from the 



caudal pit, smaller than second dorsal. Caudal pointed, length three thirteenths 



of the total length, equal to the distance between the dorsals. 



Back greyish, fins greyish or bluish grey, in part white-edged; below 



whitish. 



Java. 



Hemigaleus balfotjri. 



Hemigaleus balfouri Day, 1878, Ind. fishes, p. 717, pi. 18.5, f. 4. 



Length of snout little more than the width of the mouth, little less than the 

 distance from the eye to the first gill opening. Spiracle minute, a half diameter 

 of the eye behind the orbit. Labial folds on both jaws, at the angle of the mouth. 

 Gill openings at least twice the width of the orbit. Teeth in f| rows; upper 

 notched or with about three denticles along the outer side of the base; lower 

 slightly smaller, erect, smooth. Pectorals falciform, when applied to the side 

 subtending the anterior third of the dorsal base. Base of the dorsal about mid- 

 way between the base of the pectoral and that of the ventral. Second dorsal 

 and anal nearly equal, bases opposed, that of the former slightly in advance of 

 that of the latter and half as long as that of the first dorsal. Caudal one fifth 

 of the total length, subcaudal lobe blunted. Length of the type 32? inches. 



Dark brown, fins gray, upper part of second dorsal dark. 



Coromandel Coast of India. 



Eugaleus. 



Galeorhinus Blainv., 1816, Bull. Soc. phil., p. 121 (part). 



Galeus Cuv., 1817, Reg. anim., 2, p. 127 (not Galeus of Valmont, 1768, or of Raf., 1810). 



Eugaleus Gill, 1864, Proc. Acad. nat. sci. Phil., p. 148 (name). 



Body moderately slender, elongate, cavity about half of the total length. 

 Head medium, from the snout to the hindmost gill opening about one fourth of 

 the total, depressed and blunt forward. Mouth wide, with a short labial fold 

 on each jaw. Teeth alike on both jaws, compressed, subtriangular, inclined 

 toward the angles of the mouth, smooth on the edges, excepting two to four 



