STENOGYRA. 



227 



Fig. 386. 



Subgenus ACICULA, (Leach,) Risso. 



Shell elongate, imperforate, polished, vitreous, white, apex 

 rather obtuse ; aperture equalling about one-half the shell's 

 length, oblong ; columella subarcuate, dis- 

 tinctly truncated, peristome simple, acute. 

 No eyes. 



Animal short, slender, tail acutely point- 

 ed, eye-peduncles very long, slender, tenta- 

 cles short, stout. 



Animal of Acicula.^ 



Fig. 387. 



Cioiiella acicula, Moll. — Shell cylindrically fusiform, needle- 

 like, attenuated towards the obtuse apex, glassy, polished, white ; suture 

 narrowly margined ; whirls six to seven, flattened, the last 

 equalling two-fifths of the shell's length; columella arcuate, 

 narrowly and abruptly truncated at its base ; aperture narrow, 

 lanceolate ; peristome simple, straight, acute. Length 4|, 

 diam. I5 ; of aperture, length 2, breadth J mill. 



Buccinum acicula, Mullee, Verm. Hist. 11, 150 (1774). 

 Bulimus acicula, Brugdieke, &c., Moquin-Tandon, Moll. Fr. 



II, 309, pi. xxli, f. 32, 34. 

 Achatina acicula, Lamakck, &c., Pfeiffer, Mon. Hel. Viv. 



II, 274. — Reeve, Brit. Land and Fr.-Water Shells, 97, fig- 

 Buccinum terrestre, Montagu, &c. &c. For further syn. see Pfeiffer. 



Cionella 

 acicula, 

 enlarged. 



The shell figured is from Florida (Bartlett! in coll. A. Binney). 

 It agrees well with English specimens, so that I have no doubt 

 of its being the species to which I have referred it. It is not 

 like A. iota, of Jamaica, or A. gundlachi of Cuba. 



Pfeiffer gives Europe and Madeira as the habitat of A. acicula. 

 It is said by Moquin-Tandon to live in the crevices of rocks and 

 under moss and dead leaves. 



Specimens have lately been found at Princeton, N. J., doubtless 

 imported on plants. 



STEIVOGTRA, Shuttl. 



Shell turreted, sometimes truncated, hyaline or white, with a 

 delicate horn-colored, sometimes reddish epidermis ; whirls 



' From Reeve : C. acicula, very much enlarged. 



