18Sr>.] PItOCEEDINCS OF rMITED STATES NATIONAL MUSEUM. fjilf) 



elongate, and 8 rays, the last doable, inserted at a distance from snout 

 (72"^™) equal to one-fourtb of the total length. The second spine (39™™) 

 reaches the fifth ray of the second dorsal. The length of dorsal base 

 (15™™) equals three-fourths of the space between the two dorsals. 



The second dorsal begins in the perpendicular from the seventh ray 

 of the anal and at a distance from the first dorsal (20™™) about equal 

 to the diameter of the eye. The longest rays are not so long as the 

 barbel. It contains at least 110 rays. 



Anal inserted under the interspace between the two dorsals, its 

 height equal to ^ the length of the head. It contains at least 110 rays. 



Pectoral inserted in advance of the origin of the first dorsal, its 

 length (33™™) half that of the head. Its tip extends to the vertical 

 from the fifth anal ray and to about the seventeenth scale of the lateral 

 line. 



The ventral originates under the second spine of the dorsal, its outer 

 ray is somewhat produced, extending slightly beyond the origin of the 

 anal. The naked space on the breast is longer than broad, half as 

 long as the eye. The distance of the vent from the origin of the ven- 

 tral, equals the length of the eye. 



Color, silvery gray, with yellowish or brownish tints. 



Macnirus occa, n. s. 



The typical specimen, number 37334, is 450 millimeters long ; its tail 

 is injured. 



A species with an exceedingly elongate snout, nearly twice as long 

 as the eye, with a black flap between the nostrils; with the angle of 

 the mouth nearly reaching to the vertical from the posterior margin of 

 the orbit ; the head contained 3.J times in total length and equaling 

 twice the greatest height of body. The ridge of the head is very strong 

 and continuous from the snout to the angle of the preopercle; strong 

 supraocular and occipital ridges also present. 



Eye nearly round, its horizontal diameter ^ length of the head and 

 equal to interorbital space. 



The ventral originates under the middle of the first dorsal, and ex- 

 tends to the 4th ray of the anal. The distance from ventral origin to 

 vent is contained 3^ times in length of head. 



The second spine of the dorsal is weak and smooth, its length equal 

 to postorbital part of head, its base slightly less than distance between 

 first and second dorsals. 



