. Annals of the Lyceum of Natural History of New York. Natural history; Natural history -- New York (State); Science; Science -- New York (State). with Descriptions of X being Agnatha, in which the jaw is wanting. This method of classification was subsequently further elaborated by Morch {Journ. de Conch, v. 1805), who, referring to Schmidt's state- ment, placed Cylindrella in Agnatha. Gray {Ann. & Mag. Nat. 267, I860) suggested a division of the Pulmonata GeophUa into two sections, viz.: Sect. I. Vekmivora. Buccal mass very large; 11l^::i»t pro« duced. Jaw distinct, horny; teeth
. Annals of the Lyceum of Natural History of New York. Natural history; Natural history -- New York (State); Science; Science -- New York (State). with Descriptions of X being Agnatha, in which the jaw is wanting. This method of classification was subsequently further elaborated by Morch {Journ. de Conch, v. 1805), who, referring to Schmidt's state- ment, placed Cylindrella in Agnatha. Gray {Ann. & Mag. Nat. 267, I860) suggested a division of the Pulmonata GeophUa into two sections, viz.: Sect. I. Vekmivora. Buccal mass very large; 11l^::i»t pro« duced. Jaw distinct, horny; teeth numerous, four-sided, close together on the lingual membrane. Herbivorous. In the first Section, which seems to be equivalent to Morch's Agnatha, Gray placed the OleaoinidcB, Streptaxida and / ceilidh,—in the second, Ilelicbhi. Arionida, etc., etc.,—he did not specially refer to Cylindrella. Albers and Von Mar tens {Die Heliceen, 2 ed. 1861) have Cylindrella in Testacellea, giving as generic characters, on the authority of Schmidt, "Maxilla nulla. Dentes raduke in lineia utrinque "lilitjni- dispositi, bini basi ; He adoptH Beveral Btibgenera, one of which is Urocoptis Beck, comprising C. Ghi( sbn gkti Pfr. and other large Mexican species, as well as the -mailer allied forms of the West Indies. In November, 1865, I published (Ami. Tjyc. viii. L61 I the an- nexed figure of the lingual dentition of C. scceva Gund. of Cuba, with the remark "the rows of teeth are about 130in num- ber, the formula being 26-2-26. The cen- tral plate is small, obtusely pointed, laterals uncinated, joined two by two, upper edge ; The expreasionjoinedtwobytioo was inadvertently need, and Morse has since called my attention to it, in fad each plate (lateral) has two cusp-. Guppy {Ann. & Mag. Nat. Hist. Jannary, l-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
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