190 TERRESTRIAL AIR-BREATHING MOLLL'SKS. 



point representing the outer cutting point of the first four lateral teeth and one 

 inner, still larger cutting point, representing the middle cutting point of the 

 first four laterals, and one smaller outer cusp, bearing one small, sharp, bifid 

 cutting point, representing the outer side cutting point of the first four laterals. 

 The sixth tooth has the largest cutting point bifid. The balance of the teeth 

 are true marginals. They are very low, wide, with two low wide cusps, bearing 

 each several irregular blunt cutting points. 



The dentition of this species is, as would be anticipated, of the same type as 

 the allied Ccecilianella acicula as figured by Lehmann (Lebenden Schnecken 

 Stettins, p. 128, PI. XIII. Fig. 43, and Sordelli, I. c. Fig. 26). The jaw, how- 

 ever, has no appearance of the " brace " like ribs described in that species by 

 Sordelli (Atti Soc. Ital. Sc. Nat., XIII. 1870, 49, PI. I. Fig. 25). The ribs are 

 quite like those figured of Microphysa Lansingi (p. 172. Fig. 81), although they 

 are narrower. 



Ccecilianella acicula, Muller. 



Shell cylindrically fusiform, needle-like, attenuated towards the obtuse apex, 



glassy, polished, white ; suture narrowly margined ; whorls 6 to 7, flattened, the 



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



Fig 96. narrowly and abruptly truncated at its base; aperture narrow, 



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



diameter, l^mill.: of aperture, length, 2 mill.; breadth, | mill. 



Buccinum acicula, Mullek, Verm. Hist., II. 150 (1774). 

 JBulimus acicula, BruguiIcre, etc., Moquin-Tandon, Moll. Fr., 

 II. 309, PI. XXII. Figs. 32, 34. 

 enlarged. Achatina acicula, Lamarck, etc., Pfeiffer, Mon. Hel. Viv., II. 



274. —Reeve, Brit. L. & Fr.-W. Sh., 97, Fig. 

 Buccinum terrestre, Montagu, etc., etc. For further syn. see Pfeiffer. 

 Acicxda acicula, Tryon, Am. Journ. Conch., III. 300 (1869). 

 Cionclla acicula, W. G. Binnev, L. & Fr.-W. Sh., I. 227, p. 387 (1869). 



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. Gund- 

 lachi of Cuba, or any West Indian species. 



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, New Jersey, doubtless im- 

 ported on plants. 



Jaw and lingual membrane : see p. 188. 



Genitalia as in Ferussacia suhcylindrica, excepting that the flagellum is 

 shorter, and enters the penis sac at its apex (Lehmann). 



