FAMILY LIMNIADA — LIMNEA. ra 
LIMNEA HUMILIs. 
PLATE IV. FIG. 71..4.-3. 
(STATE COLLECTION.) 
“Limneus humilis. Say, Jour. Acad. Nat. Sc. Vol. 2, p. 378. 
L. modicellus, var.? Ip, Jour. Acad. Nat. Sciences, Vol. 2, p. 122. 
L. modicella. GouLD, Invertebrata of Mass, p. 218, fig. 151. 
tL. humilis, HatpEMAN, Monog,. Limniades, p. 41, pl. 13, figs. 1-8. 
Description. Shell ovate-conic. Volutions five to six, convex; the terminal one very 
minute. Aperture and spire subequal, oval, regular. Fold on the columella occasionally 
distinct. 
Color, varying from pale reddish to brownish horn. Animal translucent, except the cen- 
tral portion, which is.very light brown. Tentacles short, with a black point on the anterior 
basal edge. 
Length, 0°2-0°4. 
Found from Maine to South-Carolina inclusive. The typical form of this species, accord- 
ing to Mr. Haldeman, is short and thick, and such are found near the Susquehannah at 
Owego; the northern specimens are more slender, and form the variety described as modi 
cellus. 
LIMNEA REFLEXA. 
PLATE IV. FIG. 72. a. B.—FIG. 65, var. 
(STATE COLLECTION.) 
Limneus reflecus. Say, Jour. Acad. Nat. Se. Vol. 2, p. 167. 
L. ezilis, Lea, Am, Phil. Trans. Vol. 5, p. 114, pl. 19, fig. 82. 
L. refleca, Hatpeman, Monog. Limniades, p. 26, pl. 8, figs. 1 and 8. 
Description. Shell elongated, tapering, subacute. Whorls six to seven, flattened or slightly 
rounded, with transverse sinuous wrinkles, and very minute revolving lines. Suture deeply 
impressed, revolving very obliquely. FPillar-lip with a fold more or less distinet: lip everted 
at the base over the umbilicus, which is, however, distinct: apex polished. 
Color. Brownish horn, becoming blacker towards the tip; occasionally covered entirely 
with a black epidermis. The young are amber-colored. 
Length, 0°2 -0°5. 
The specimens illustrating this species were obtained near Fairfield, Herkimer county. 
Fig. 65 represents a specimen, nearly 0-8 in length, from the same locality. 
