2013, ISBN: 1236998367

[EAN: 9781236998361], Neubuch, [PU: Rarebooksclub.com, United States], Brand New Book ***** Print on Demand *****. This historic book may have numerous typos and missing text. Purchasers … Mehr…

[EAN: 9781236998361], Neubuch, [PU: Rarebooksclub.com, United States], Brand New Book ***** Print on Demand *****. This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 edition. Excerpt: .the typical forms of Cadulus. The other sections are probably natural groups, although when the teeth are broken ofi, not an unusual accident, their differential characters are no longer apparent. It is hardly necessary to warn the investigator against this pitfall; but we may perhaps be allowed to beg indulgence lest we may not in every case have avoided it ourselves. Key to sections of Cadulus. I. Apex with slits or notches. a. Apex with two lateral slits only, Section Dischides, p. 143. a . Apex with four or more slits, Section Polyschides, p. 146. II. Apex entire, unslit. a. Obese; both ventral and dorsal outlines convex and projecting beyond a chord connecting the adjacent lip edges, Section Cadulus s. 3., p. a . More slender or attenuated; ventral outline convex; dorsal outline as a whole concave, not projecting beyond a chord connecting the ends of shell, Section Gadila, p. Diachide8 J EFFR., Annals and Magazine of Nat. Hist. (3), xx, p. 251 (in text). Gadus Rang, DIssmwas, Descr. Anim. s. Vert. Bassin de Paris, ii, p. 217, 1864, (in part) for G. parisiensis = C. denticulatww Dh., G. bilabiatus = C. bifiasmratus Dh., and G. brevis Dh. Shell rather slender, not much bulging; apex cut into an anterior and a posterior lobe by two deep lateral slits, one on each side. Type C. (Dischides) politus S. V. Vood. Distribution: Recent in both the Atlantic and Pacific; Paris Basin Eocene to Pliocene of Europe. J effreys describes the soft parts of C. politus as follows: Body whitish, gelatinous; mantle rather thick, forming a collar round the front opening of the shell; captacula issuing from within the mantle, numerous, capable of so great an extension as to exceed the shell in length; stalks very slender; terminal.<

2013, ISBN: 1236998367

[EAN: 9781236998361], Neubuch, [PU: Rarebooksclub.com, United States], Brand New Book ***** Print on Demand *****.This historic book may have numerous typos and missing text. Purchasers c… Mehr…

[EAN: 9781236998361], Neubuch, [PU: Rarebooksclub.com, United States], Brand New Book ***** Print on Demand *****.This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 edition. Excerpt: .the typical forms of Cadulus. The other sections are probably natural groups, although when the teeth are broken ofi, not an unusual accident, their differential characters are no longer apparent. It is hardly necessary to warn the investigator against this pitfall; but we may perhaps be allowed to beg indulgence lest we may not in every case have avoided it ourselves. Key to sections of Cadulus. I. Apex with slits or notches. a. Apex with two lateral slits only, Section Dischides, p. 143. a . Apex with four or more slits, Section Polyschides, p. 146. II. Apex entire, unslit. a. Obese; both ventral and dorsal outlines convex and projecting beyond a chord connecting the adjacent lip edges, Section Cadulus s. 3., p. a . More slender or attenuated; ventral outline convex; dorsal outline as a whole concave, not projecting beyond a chord connecting the ends of shell, Section Gadila, p. Diachide8 J EFFR., Annals and Magazine of Nat. Hist. (3), xx, p. 251 (in text). Gadus Rang, DIssmwas, Descr. Anim. s. Vert. Bassin de Paris, ii, p. 217, 1864, (in part) for G. parisiensis = C. denticulatww Dh., G. bilabiatus = C. bifiasmratus Dh., and G. brevis Dh. Shell rather slender, not much bulging; apex cut into an anterior and a posterior lobe by two deep lateral slits, one on each side. Type C. (Dischides) politus S. V. Vood. Distribution: Recent in both the Atlantic and Pacific; Paris Basin Eocene to Pliocene of Europe. J effreys describes the soft parts of C. politus as follows: Body whitish, gelatinous; mantle rather thick, forming a collar round the front opening of the shell; captacula issuing from within the mantle, numerous, capable of so great an extension as to exceed the shell in length; stalks very slender; terminal.<