158 TRANSACTIONS OF.. THE WAGNER FREE 



Scala Sayana Dall. 



Scala Sayana Dall, Rep. Blake Gastr., p. 309, 1SS9; Bull. U. S. Nat. Mus. No. 37, p. 122, 

 pi. 50, fig. 10, 1889 



Pliocene of the Caloosahatchie ; Post-Pliocene of South Carolina. Recent 

 from Texas to Key West, and northward to Virginia. 



This is the 5. clathncs Say in part, and in Binney's Gould's " Invertebrata 

 of Massachusetts " a figure of it is given by mistake for S. lineata Say. A 

 correspondent suggests that Sowerby and Tryon were wrong in referring 

 Kiener's 5. Hjimphreysi to S. angulata, and that therefore this species is the 

 genuine 6". Humphreysi, which, being long prior to my name Sayana, would 

 take precedence of it. Having recently had an opportunity of consulting 

 Kiener's monograph, I find his figure and description by no means conclusive, 

 and have therefore retained the name Sayana for the present, as it is definite 

 and certain, while the other as yet cannot be said to be so. 



Scala lineata Say. 

 Scala lineata (Say, 1822) Dall, Rep. Blake Gastr., p. 307, 18S9. 



Pliocene of the Caloosahatchie; Post- Pliocene of South Carolina and 

 Florida. Living from Cape Cod to Charlotte Harbor, Florida, and perhaps to 

 Texas. 



Scala Frielei Dall. 



Scala Frielei Dall, Rep. Blake Gastr., p. 313, 18S9; Bull. U. S. Nat. Mus. No. 37, p. 124, 

 1889. 



Post-Pliocene of North Creek, Little Sarasota Bay, West Florida. Living 

 off the coast of North Carolina in 63-107 fathoms. 



Subgenus Opalia H. & A. Adams. 



Section Pliciscala De Boury. 



Opalia De-Bouryi n. s. 



Pliocene marls of the Caloosahatchie, one specimen. 



Shell elongate, slender, nine-whorled; nucleus smooth, small ; subsequent 

 whorls rounded, contiguous, with a deep suture, sculptured everywhere with 

 a uniform, close-set, microscopically punctate, fine spiral striation ; base with 

 a very strong, flattened spiral cord, also with an axial fasciole equally strong, 

 the space between the two somewhat excavated and radially sculptured with 

 slightly elevated ridges, about twice as numerous as the varices, and which 

 do not extend beyond the outer margin of the disk ; varices eight in number, 

 continuous along the spire and lagging a little, so that each, when followed 

 up the spire, describes about half a turn around the axis ; the varices are 

 prominent and rounded, equally strong anteriorly, ceasing at the edge of the 

 disk and behind, especially on the upper whorls, somewhat coronated at the 

 suture ; sometimes there are incremental irregularities, and one or two of the 

 varices on the last two whorls are a little larger than the others ; aperture 



