VERONICELLA. 241 



quite small, long and narrow, attenuated to a point above, gradually enlarging 

 towards the base, above which are lateral, bluntly pointed, wing-like expan- 

 sions ; the lower margin is broad, and has a deep, rounded excavation ; in some 

 cases the lateral expansions are so produced as to give an almost cruciform ap- 

 pearance to the base of attachment; below the centre of the base of attach- 

 ment, on its anterior surface, is a stout, blunt, short, simple cusp, ending in a 

 short, stout cutting point. 



The lateral teeth are very irregular in shape, but retain the bicuspid char- 

 acter peculiar to the Geophila ; they are longer and much wider than the 

 centrals ; the bases of attachment are very irregular in shape, very asym- 

 metrical, subquadrate or irregularly excavated above, thence curve outwards 

 and downwards, until at their lower extremity they exhibit the lateral expan- 

 sions and basal excavation of the central tooth, but both these characters are 

 much more developed than in the centrals, and from the want of symmetry in 

 the teeth are found only on the outer side of each tooth ; the upper edge is 

 squarely reflected, the reflection is very large, extends half-way to the lower 

 edge of the base of attachment, and is produced beyond that into a blunt, stout 

 cusp bearing a stout cutting point ; the side cusps are almost obsolete, the inner 

 one is much larger than the outer one, neither with distinct cutting point. 

 The marginal teeth are a simple modification of the laterals, being reduced to 

 a subquadrate shape, with the cutting point of the cusp much more produced. 



I give on PI. V. Fig. P, a group of central and laterals in a, a marginal 

 in 6. 



I have not been able to examine V. olivacea, the only other species found 

 within our limits. 



For genitalia see below, under V. Floridana. 



Veronicella Floridana, BINNEY. 

 Vol. III. PI. LXVn. 



Animal (contracted in alcohol) elongated-oval, about four times as long as 

 broad, the sides very slightly curved, and the extremities circularly rounded ; 

 back convex, regularly arched in every direction ; surface very slightly wrin- 

 kled ; color dark ashy-gray, mottled with black, with a median whitish line, on 

 each side of which, at about one third the distance towards the margin, is an 

 ill-defined stripe of black ; beneath drab-colored ; foot occupying about one 

 third the width; eye-peduncles short, annulated, the tentacles not very dis- 

 tinctly bifurcate. Length, 56 mill.; breadth, 18 mill. 



Vaginulus Floridanus, BINNEY, Terr. Moll., II. 17, PI. LXVII. (1851). LEIDY, 



T. M. U. S., I. 251, PI. IV. anat. 



Veronicella Floridana, CHENU, Man. de Conch., I. 472, Figs. 3501, 3502 (1859). 

 -W. G. BINNKY, L. & Fr.-W. Sh., I. 305 (1869). TRYON, Am. Journ. 



Conch., III. p. 317 (1868). 

 VOL. IV. 16 



