THE FISHES OF NEW JERSEY. 27 
5 inches in length, and examples have been taken which meas- 
ured 5 feet across the disk. They were usually most plentiful in 
the bay and were formerly used to some extent as fertilizers. 
Mr. Wm. J. Fox found it at Sea Isle City. 
Dasyatis centrurus Moore, Bull. U. S. F. Com., XII, 1892, yp. 
358.—Smith, Bull. U. S. F. Com., XII, 1892, p. 368. 
Dasybatus hastata (DeKay). 
Whip Sting Ray. 
From the next species this one may be known by the more 
prickly back of adult or old examples. A row of narrow com- 
pressed tubercles along middle of back on to base of tail with 
depressed and posteriorly directed points. 
I have never seen any New Jersey examples. 
Pastinaca hastata Baird, 9th An. Rep. Smiths. Inst., 1854, p. 
337 1353]. 
Trygon hastata Bean, Bull. U. S. F. Com., VII, 1887, p. 151. 
Trygon sayii Abbott, Geol. N. J., 1868, p. 829, from Baird. 
Dasybatus say (Le Sueur). 
Say’s Sting Ray. 
Body suborbicular, above convex, beneath flat, and broader a 
short distance behind eyes. Head sloping, and length from base 
to middle of nose nearly equal to distance between eyes. ‘Tip of 
snout truncated, quadrangular, descending, and closing mouth. 
Eyes oblique, not prominent. Mouth small. Upper jaw undu- 
lated, and lower a little prominent in middle. Teeth dilated, 
thomboidal at base, terminated by an acute point, recurved in- 
wards, with longitudinal depression before, and in several rows. 
Lateral teeth more suddenly attenuated. Attached to upper jaw 
within is a large membrane, lasciniated and loose at margin. 
Attached to lower jaw within are five conic membranous appen- 
dages supporting superior membrane during its inflation. A 
longitudinal carinated loose skin separates palate in two equal 
