. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. / CCECILIANKLLA. 189 The {:jonit:ilia arc poruliar : tlie penis sac is short, stout, with the retractor nniscK' near its base ; the vas deferens (Miters at its apex, and n<*ar its entrance into the va<;ina it receives a curious llaj^ellatc ai){)cnda{^e, swollen below, nar- row above, as lonjjj as the whole system, with a lar;^(i narrowly ovate bulb at its end; the genital bladder is large, ovate, on a long, narrow duct. CCBCILIANELLA, BoURO. Animal as in Fernssacia ((\. v.), Blind. Shell elongate, imper
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. / CCECILIANKLLA. 189 The {:jonit:ilia arc poruliar : tlie penis sac is short, stout, with the retractor nniscK' near its base ; the vas deferens (Miters at its apex, and n<*ar its entrance into the va<;ina it receives a curious llaj^ellatc ai){)cnda{^e, swollen below, nar- row above, as lonjjj as the whole system, with a lar;^(i narrowly ovate bulb at its end; the genital bladder is large, ovate, on a long, narrow duct. CCBCILIANELLA, BoURO. Animal as in Fernssacia ((\. v.), Blind. Shell elongate, imperforate, polished, vitreous, white, apex rather obtuse; aperture equalling about one half the shell's length, Fig 95. oblong; columella subarcuate, distinctly truncated; peristome simple, acute. Within our limits it has only been accidentally in- troduced. It is common amon": the West Indian . , , ^, •^ Animal of (.. acicula. Islands, in Europe, South America, etc. (Reeve.) I have not been able to examine the jaw or dentition of C. acicula, the only species found in our limits. They are both well known, liowever, from the descriptions and figures of Moquin-Tandon, Thomson, Sordelli,^ and Lehmann. The jaw is low, wide, arcuate, with delicate vertical striae. The lingual mem- brane (Lehmann, Lebenden Schnecken, p. 128, PL XIII. Fig. 43) has 120 rows of 11—1—11 teeth each. The centrals are small, tricuspid (Sordelli), the later- als, 6 in number, are larger, and have a more highly developed reflection, and are also distinctly tricuspid. Marginals subquadrate, with a broad reflection, bearing delicate denticles. I have examined the jaw and lingual dentition of C. Gundlachi, which for the sake of comparison, I repeat here : — Jaw low, wide, slightly arcuate, ends attenuated ; whole surface covered with about 22 crowded, broad, flat ribs, denticulating either margin. Lingual membrane long and narrow. Teeth 18—1—18, with 4 perfect later- als. Centrals with their base o
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
