The Mollusca of the Chicago Area Volume 1-2

The Mollusca of the Chicago Area Volume 1-2

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...surface with a strong carina; ends square or only slightly rounded; concave margin smooth, with a well-marked median projection; anterior surface strongly striate vertically, and faintly striate longitudinally (Fig. 44). Fig. 44. Jaw of Limax Flavus Linne. (After Binney.) Radula formula: V + V+t+V+V (6-1-6o); the teeth are in all essential respects like those of maximus, except that the cutting points are longer. There are about 100 rows of teeth. Genitalia: "The testicle, composed of a globular mass of aciniform cceca, is not imbedded in one of the lobes of the liver. The penis sac is long, stout, cylindrical, receiving the vas deferens and the retractor muscle at its apex. The genital bladder is small, elongated-ovate, with pointed apex and short duct." (W. G. Binney.) Distribution: Same as maximus, with the addition of Balearic Islands, Brazil and Australia. Habitat: Similar to maximus, but not so common. Remarks: This species is at once distinguished from maximus by the absence of color spots and by the larger size of the tubercles. It is an introduced species and is fast spreading over the United States. Its habits are like those of maximus. Genus AORIOLIMAX Morch. "Animal keeled only posteriorly. Mantle concentrically striated, the center of strire being somewhat to the right of the median line. There are no bands, and if spots are present they are irregularly scattered over the body. Pulmonary opening behind middle of mantle, and genital pore near tentacles. The intestine has four convolutions, and there is a solid internal shell; nocaudal gland." Genitalia: Differing from Limax in having the vas deferens join the penis at its base, and in the shape of the penis and the genital bladder. 77. Agriollmax campestris Binney, ...show more

Product details

  • Paperback | 142 pages
  • 189 x 246 x 8mm | 268g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236608135
  • 9781236608130