35 



544 =: Actaeonina naticoides, Gabb, Jour. Acad. Nat. Sci. IV, sec. sen 



293. 



545 = Ringicula subpellucida, Shumard, Proc. Bost. Soc. Nat. Hist. 



Sept. 1861, 192. 



546 = Ringicula acutispira, Shdmard, ib. 193. 



548 = Actaeonina biplicata, Gabb, Proc. Acad. Nat. Sci. Phila. March 



1860, 93. 

 572 = Scalpellum inequicostatum, Shcmard, Proceed. Bost. Soc. Nat. 



Hist. 1861, 199. 



Scalpellum, Leach, being a genus of Crustacea, it was perhaps 



by some oversight in copying manuscript that this species was 



described under that name. 

 577 = Capulas occidentalis, Hall & Meek, Mem. Am. Acad. Arts and 



Sci. V, new ser. 1856, 385. 



583 = Phasianella Haleana, D'Orbigny, Prodr. de Pal. II, 1850, 224. 



584 = Phasianella perovata, Siidmard, Trans. St. Louis Acad. I, 597. 



585 = Phasianella punctata, Gabb, Jour. Acad. Nat. Sci. Phila. IV, sec. 



ser. 299. 

 588 = Architectonica Abbotti, Gabb, Proc. Acad. Nat. Sci. Oct. 1861, 



321. 

 590 = Solarium abyssinus, Gabb, ib. March 1860, 94. 



580 — Not Delphinula, Lamk. 



581 and 582 — Straparollus of Montfort does not occur in the Cretaceous 



or more recent rocks. 



592 = Nerita (Nereis) densata, Conrad, Jour. Acad, new ser. IV, 288, 



slvi, 57. 



593 = Natica ambigua, Meek & Haydex, Proc. Acad. Nat. Sci. March 



1856, 64. 



594 = Natica Tuomeyana, Meek & Hayden, ib. Nov. 1856, 270. 



615 = SPIRONEMA, Meek. Type Turbo tenuilineata, Meek & 



Hayden, Proc. Acad. Nat. Sci. Phila. March 1856, 64. 



Shell ovate ; whorls rounded, and separated by a rather deep 

 suture ; aperture ovate, lip thin, continuous ; columella not 

 thickened, perforated by a very small umbilicus ; surface with 

 revolving lines and furrows. The non-perlaceous texture of the 

 interior layer, as well as the other characters of such Cretaceous 

 shells, remove them from the Trochklx. 



616 = Tuba? bella, Conrad, Jour. Acad. Nat. Sci. IV, 289, xlvi, 38. 



624 = Rostellaria biangulata, Meek & Hayden, Proc. Acad, Nat. Sci. 



1856, 65. 



625 = Aporrhais parva, Meek & Hayden, ib. May 1860, 178. 



626 := Aporrhais sublaevis, Meek & Hayden, ib. 



627 = DREPANOCHEILUS, Meek. Type Rostellaria americana, 



Evans & Shumard, Proc. Acad. Nat. Sci. Phila. 1860, 423. 



Shell like Aporrhais, but without a posterior canal extendinrr 

 up the spire, and having the lip produced into a single, usually 



