Glut Herring ; Summer Herring 



reaching posterior margin of pupil; lower jaw somewhat projec- 

 ting, the upper emarginate; eye large; gillrakers long, but 

 shorter and stouter than in the shad; lower lobe of caudal the 

 longer. Colour, bluish above, sides silvery; indistinct dark stripes 

 along the rows of scales; a blackish spot behind opercle; perito- 

 neum pale. 



Glut Herring"; Summer Herring 



Pomolobiis (zstivalis (Mitchill) 



This species occurs on our Atlantic coast from New Eng- 

 land to the Carolinas. 



It is less abundant northward than the alewife and appears 

 in the streams somewhat later than that species. Southward it 

 is sometimes exceedingly abundant, hence the name "glut her- 

 ring." Other names by which it is known are blueback, black- 

 belly, saw-belly, and kyach. As a food-fish it is less valuable 

 than the alewife. 



Head 5; depth ^\. Very similar to the preceding, from 



which it is best distinguished by the black peritoneum; body 



more elongate, the fins lower, the eye smaller, and the back 

 darker; first ray of dorsal not equal to base of fin. 



GENUS ALOSA CUyiER 



The Shad 



Body deep, compressed, deeper than in related American genera; 

 the head also deep, the free portion of the cheek deeper than long; 



104 



