(398 A. E. Verrill—Marine Fauna of the Outer Banks 
swollen just below the suture, which lies in a deep channel; 
they are crossed, above the peripheral carina, by numerous 
elevated, thin, oblique ribs, which rise into lamelle near the 
suture, where they join the carina forming small nodules; 
between the ribs are fine parallel lines of growth and sometimes 
a few fine revolving lines. Below the periphery, in line with 
the posterior edge of the lip, there is a smaller, plain, angular 
rib, and around the umbilicus there is a strong nodulose rib. 
Between these ribs, the base is covered with fine revolving 
lines. Within the umbilicus are radiating raised lines which 
cross two or three small revolving ribs.) Aperture rounded, 
with angles corresponding to the ribs. Length, 3; breadth, 3™™. 
Station 871, scarce. 
Turbonilla Rathbuni Verrill and Smith, sp. nov. 
Shell white, large for the genus, elevated, with twelve rather 
convex whorls, and impressed sutures. The whorls are slightly 
flattened and crossed by numerous slightly flexuous, elevated, - 
smooth, even ribs, of which there are about thirty on the lower 
whorls; intervals about as wide as the ribs, concave, crossed by 
impressed revolving lines, of which there are eight or ten on 
the spire. apeerale somewhat oblong, with the lip a little 
prolonged and slightly effuse anteriorly. Columella nearly 
straight, smooth. Umbilicusnone. Length, 18; breadth, 4". 
Station 869, 192 fathoms, common; 894, 895. 
Turbonilla formosa V. and S., sp. nov. 
Shell white, lustrous, large, in form and size resembling the 
preceding; whorls twelve, somewhat flattened ; aperture ovate, 
effuse in front; sculpture, strong rounded ribs, but without any 
revolving lines. Stations 891, 892. 
Pleurobranchea tarda V., sp. nov. 
y- 
Length 80 to 40™". Common at stations 814, 865-880 ; 28 to 
250 fathoms; over 200 specimens taken. One, 60™ long, 
from station 895. 
Philine amabilis V., sp. nov. ; 
Shell very thin, diaphanous, delicate, and shining with 
bright iridescence; very large for the genus, and very open, 
