29 
a rounded angle with the lahrum and the labium : labrum hardly 
reflected ; umbilicus narrow. 
Length more than three-tenths of an inch. For this species I 
am indebted to Dr. T. W. Harris, of Milton, Massachusetts. 
It closely resembles P. marginata, JVob., but is much larger, and 
the labrum is not widely reflected. When viewed in front it has a 
reflected appearance, but the opposite view presents only a very 
limited excurvature. 
Achatina solida. — Shell conic, rather elongated, nearly 
smooth, or with distant wrinkles, polished, yellowish, paler 
towards the apex, which is white ; rather ponderous ; whorls 
about seven ; spire prominent ; mouth rather small ; labrum on its 
inner submargin thickened columella hardly truncated, with a 
somewhat prominent ridge on the inner side near the base. 
Length two and a half inches. This species was found by Mr. 
Titian Peale in the southern part of East Florida, where he also 
obtained the jiammigera, Per., and vexillum. Humph. ^ or their 
analogues, in plenty. In outline it bears some resemblance to 
Lister’s fig. 9, of plate 14, but is much smaller. It appears to be 
rare, but one specimen having been brought home by Mr. Peale. 
Cyclostoma dentatum. — Shell conic, cylindric, truncate at 
tip ; whorls three or four, slightly convex, cancellate, with fine, 
regular, subequal, longitudinal, and transverse elevated lines; 
superior edge fimbriated, with prominences extending over the 
suture ; one or more rufous revolving lines, sometimes obsolete ; 
labrum somewhat reflected, white ; umbilicus distinct. 
Length less than one -half inch. 
For this species we are indebted to the researches of Mr. T. 
Peale in Florida. It is the only true species of Cyclostoma yet 
found within the limits of the Union. This species is somewhat 
like the Turbo crenatus, Linn,., but that shell is not said to be 
truncated at tip, and has a keeled base. 
No. 3. — In the Appendix to Long’f Second Expedition to the St. Peter’s River, the fol- 
lowing species were described, anno, 1824. 
Helix harpa. — Shell conic, reddish brown ; whorls four, 
convex, with numerous elevated, subequidistant, equal, lamelli- 
form, acute lines across, the interstitial spaces flat and wrinkled ; 
aperture suborbicular, truncated by the penultimate whorl, and 
