205 



lique semiovali, dente oolumellari, altero labiali, altero postico lamel- 

 lari armata : labro vix reflexo. 



Long. J^ poll. Inhabits Florida. 



Smaller than any of our species except P. milium, and is distin- 

 guished by its short, conical form. The five specimens examined, all 

 presented the crowded thimble-like impressions under a magnifying 

 power of 20 diameters. I think no other American species has the 

 revolving tooth on the penult whorl. 



Pupa modica. T. minuta, fragili, ovato-conica, elongata, alba 

 vel cornea, edentata, anfr. 5 convexis, P. fallaci simillima sed minore 

 dimidio, anfractibus duobus carente ; apertura campanulata, labro ex- 

 panso, baud planulato. 



Long. T L ; lat. J^ poll. Hab. Florida. 



DifFei-s from P. fallax only in being one half its size, in having two 

 whorls less, and in having a bell-shaped aperture with a thin revolute 

 lip instead of a thick flattened one. 



Cylindrella [Macroceramus] pontifica. T. parva, ovato-fusi- 

 formi, superne attenuate, griseo et fusco mai-morata ; anfr. ad 1 2 

 rotundatis, costulis crebris oblkruis, alternis suturam prretereuntibus, 

 ornatis, ultimo carinato : apertura laterali, circulari, campanulata ; 

 columella recta, umbilicum linearem tegente; peristomate reflexo, 

 fere continuo. 



Allied to Pupa unicarinata, Lk., and P. turrita, Pfeif., but is 

 smaller, more coarsely ribbed, has a more complete aperture, project- 

 ing to the left side, and is readily distinguished from either of them 

 by the projection of the alternate ribs across the suture, giving the 

 whorls a dentate or coronated appearance. Its coloring is like that 

 of Pupa cinerea. 



Cylindrella jejuna. T. fusiformi, solidiuscula, truncata, pal- 

 lide cornea, filis tenuibus albis longitudinaliter lirata : anfr. superstiti- 

 bus ad 9 (totis ad 1 8) convexis, ultimo exiliter carinato ; sutura bene 

 impressa ; collo brevissimo ; apertura expansa, peritremate albo, con- 

 tinuo, anfractui penultimo baud annexo. 



Long. -| ; lat. ^ poll. Hab. Florida. 



This may be a form of C. lactaria, so common in Florida, and 

 which presents so many varieties, especially in the length of the neck 

 and the development of the lip. But it seems to be constantly 

 smaller, darker colored, more solid, and with more convex whorls. 

 The peritreme also seems never to rest on the penult whorl, as is 

 usually the case in C. lactaria. 



05^ Vol. iii. 64, (October, 1848.) 

 Glandinta bullata. G. testa papyracea, bullata, diaphana, ellip- 

 soideii, lactea ferrugineo tinctii, longitudinaliter crebro striata ; spira 



