THE NATURAL HISTORY SURVEY. 325 
Animal, Radula, etc.: As in the typical form. 
Distribution: As in the type. 
Remarks: This,variety does not seem to be as common as 
the typical form. It is connected with e/evatum by almost im- 
perceptible degrees, and is simply a striate form, but is worthy 
of varietal distinction. It is found in the southern and western 
regions. 
Genus GONIOBASIS Lea, 1862. 
Elimia* H. & A. ADAMS, Genera, Vol. I, p. 300, 1854. 
Gontobasis LEA, Proc. Phil. Acad. Sci., p. 262, 1862. 
Shell: Generally elongated, spire long and more or less 
pointed; aperture produced in front, but not canaliculate or 
notched. 
Animal: Resembling that of Pleurocera; jaw and radula 
same as in the last genus. 
Distribution: Entire United States. 
132. Goniobasis livescens Menke, pl. xxxv, fig. 7. 
Melania livescens MENKE, Syn. Meth., p. 135, 1830. 
Melania niagarensis LEA, Proc. Amer. Phil. Soc., Vol. IJ, p. 12, 1841. 
Melania napella ANTHONY, Proc. Bost. Soc., Vol. III, p. 362, 1850. 
Melania cuspidata ANTHONY, l.c., p. 362, 1850. 
Melania correcta BROT., List, p. 39. 
Goniobasts milestzt LEA, Proc. Phil. Acad., p. 154, 1863. 
Goniobasis translucens ANTHONY, Amer. Journ. Conch., Vol. I, p. 36, 
pl. i, figs. 1, 2, 1865. 
Shell; Varying from elongate to ovate, acuminate, fre- 
quently turreted on the upper whorls; color varying from blu- 
ish flesh to light corneous, sometimes greenish, and frequently 
with two dark brown bands; apex sharp, rounded, turned down- 
wards; surface shining, with no spiral lines save a carina which 
encircles the center of all the whorls{but the last two, and is 
obsolete in the more bulbous forms; lines of growth oblique, 
wrinkled, crowded; satures well impressed; whorls seven to 
nine, more or less rounded, regularly and rapidly increasing in 
size, the upper whorls carinated; spire elevated, either sharp- 
conic or obtuse-conic; aperture large, ovate or subrhomboidal, 
produced at the lower part, brownish-purple to purple inside; 
peristome sharp, thin on the edge, but thickened by a callosity 
within the outer lip, more or less sinuate; columella thick, solid, 
*In the first pages of this work the writer used A/imia for this well-known group of mol- 
lusks, following Mr. Pilsbry’s suggestion (Proc. Phil. Acad., p. 496; 1896); after these pages 
were in print Mr. Pilsbry, in a letter, again suggested that it was very probable that Elimia 
would not stand after all, being but a heterogeneous assembly of different forms, in the 
presence of Lea’s excellent and well-characterized diagnosis. 
