ECHINID^. 5 



ANAPESUS CAROLINUS. 

 Plate II. Fig. 2. 



Anapesus Carolinus, Troschel. 



Echinus punctulatus, Lam., An. sans Vert., 2d Ed., Vol. 3, p. 363. 



Echinus punctulatus, L. R. Gibhes, Tuomey's Geol. So. Ca., appendix, p. xxiii. 



Echinus punctulatus, Ravenel, Cat. Recent and Fossil Echinidse So. Ca., p. 1. 



DESCRirxioN. Disk orbicular; upper surface convex, often sub-conical; ambulacral 

 plates, with two purple bands of pores in pairs, extending from basal to anal aperture, 

 having one row of large tubercles on each side ; the interambulacral spaces on the dorsal 

 part of the shell without tubercles, or the fine granules which cover the plates around 

 their base; the sutures of the angular plates distinct ; dorsal aperture oval ; spines acicu- 

 lariform, with purple points ; those on the base spatulariform. 



This fragile shell is seldom obtained in a perfect state from the Post-Pleiocene beds, 

 and never with the spines attached ; the specimen from which our figure is taken 

 was procured from excavations made for the tidal drains in the upper part of the city of 

 Charleston, and kindly presented to me by Dr. Wm. T. Wragg, the Alderman under 

 whose siaperintendance the work was done. Fragments of the shell, and perfect spines, 

 are often found in the sands of the Post-Pleiocene. It is the most common species now 

 living upon the Carolina sea-coast. 



Plate II. Fig. 2, Shell, natural size, viewed from ahove. 

 " 2«, Spiyie of the same. 



Locality. Charleston; Simmons' Bluff, St Paul's; Wando. 



Museum, College of Charleston; Cabinet F. S. H. 



Genus, SCHTZASTER.— Agassiz. 



SHIZASTER ATEOPOS. 

 Plate II. Fig. 3. 



Spatangus atropos. Lam., An. sans Vert., 2d Ed., Vol. 3, p. 327. 



Spatangus atropos, L. R. Gibbes, Tuomey's Geol. So. Ca., appendix, p. xxiii. 



Schizaster atropos, Ravenel, Cat. Recent and Fossil Echinidse of So. Ca., p. 4, No. 16. 



Only a small fragment from the left anterior portion of this shell has been found in the 



