NATURAL SCIENCES OP PHILADELPHIA. 153 



Trypanostoma Wheatleyi. — Testa hpvi, pyramidata, tenui, dilute rubigi- 

 nosa, vel fasciata vel efasciata ; spira exserta, acuminata; suturis regulariter 

 impressis ; anfractibus iastar denis; planulatis, ad apicem carinatis ; apertura 

 parviuscula, rhomboidea, intus albida ; labro acuto, sigmoideo ; colutfrella ad 

 basim parum incrassata et valde contorta. 



Ilab. — Coosa River, Alabama, Dr. Showalter. 



Trypanostoma terebrale. — Testa Isevi, pyramidata, tenui, olivacea, vel 

 vittata vel evittata ; spira valde exserta ; suturis valde impressis ; anfractibus 

 instar duodenis, planulatis, ad apicem carinatis ; apertura parviuscula, rhom- 

 boidea, intus albida vel vittata; labro acuto, sinuoso ; columella impressa et 

 valde contorta. 



Hub. — Jackson Co., Alabama, Dr. W. Spillman. 



LiTHASiA purpurea. — Tcsta Icevi, curta, subcylindracea, subcrassa, tene- 

 broso-purpurea ; spira brevissima ; suturis valde impressis ; anfractibus in- 

 star quinis, convesiusoulis ; apertura grandi, rhomboidea, intus saturale pur- 

 purea; labro acuto, vix sinuoso; columella impressa, superne incrassata. 



Hab. — Cahawba River, at Centreville, Bibb Co., Ala., Dr. Showalter. 



LiTHASiA CURTA. — Tcsta graoulata, curta, solida, luteo-olivacea, plerumque 

 bifasciata ; spira brevi ; suturis irregulariter impressis ; anfractibus instar 

 quinis, planulatis ; apertura subgraudi, rhomboidea, intus albida ; labro 

 acuto, subsinuoso ; columella inferae et superne incrassata. 



Ilab. — North Alabama, Prof. Tuomey and Dr. Spillman ; Tuscumbia, B. 

 Pybus. 



ScHizosTOMA Wheatleyi. — Tcsta striata, subfusiformi, subtenui, luteola, 

 imperforata, vittata; spira obtuso-couoidea; suturis irregulariter impressis ; 

 anfractibus instar senis, vittatis, ultimo grandi ; fissura obliqua brevique ; 

 apertura parviuscula, ovata, intus alb.i et vittata; labro subcrenulato ; colu- 

 mella alba, incrassata et contorta. 



Hab. — Coosa River, Dr. Showalter. 



Anculosa Downiei. — Testa plicata et obsolete striata, subglobosa, crassa, 

 tenebroso-oliva, maculata ; spira vix prominulis, plicatis ; sf^ituris impressis ; 

 anfractibus vix ternis, ultimo grandi et ventricoso ; apertura grandi, subro- 

 tunda, intus fusco-maculata; labro acuto; columella impressa et incrassata. 



Ilab. — Connesaugd Creek, Georgia, Maj. T. C. Downie ; Coosa River, Ala- 

 bama, Dr. Showalter. 



Variations in EPIG.EA REPENS. 



BY THOMAS MEEHAN. 



There are yet many botanists who regard variations as accidents. They 

 speak of a normal form as something essential ; and departures from their idea 

 of a type, they refer to external causes, independent of any inherent power of 

 change in the plant itself. Hence, when a change of form occurs to them, it 

 is usually referred to shade, to sunlight, to an unusual season, situation, or 

 some geological peculiarity of the soil. Cultivation is denounced as inter- 

 fering with botanical science; introducing and originating innumerable forms, 

 defying the skill of the botanist to classify or arrange. My experience in 

 plant culture, and as an observer of plants in a state of nature, leads to the 

 conclusion that there is no greater power to vary in the one case than in the 

 other; that there is as much variation in the perfectly wild plant, as in those 

 under the best gardener's skill. To illustrate this I gathered a great number of 

 ?,]}&Q.iviiQn.s 0^ Antennaria plantagimfolia, \x\\\c\\, X\\ongh I do not believe has a 

 greater average power of variation than any other plant, affords a good example 

 for the following reasons : The small seeds I believe require a clear surface of 



1868.] 11 



