Hawaiian and Other Pacific Echini Volume 5

Hawaiian and Other Pacific Echini Volume 5

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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. 1914 edition. Excerpt: ...test with petaloid area more or less elevated and margins not swollen. Petaloid area relatively large, its total length.60 test-length or more; test with more or less pentagonal ambitus, its length usually decidedly greater than breadth depressum. Petaloid area relatively small, its total length.50 test-length or less; test with decagonal or rounded ambitus, its length little, or not at all, exceeding breadth. Petals small but relatively broad, with curved poriferous areas, converging to the nearly or quite closed tip; test low, v. d..13-. 18 test-length. decagonale. Petals narrow, poriferous areas little curved and tips widely open. Test relatively high, v.d. ranging from.20 to.40 test-length; posterior interradius with one genital pore; tuberculation of test rather coarse (within a petal 10 mm. long there are about 20-25 primary tubercles and in one 15 mm. long, there are about 40-50). fudsiyama. Test lower, v.d. less than.20 test-length; two genital pores generally present in posterior interradius; tuberculation of test finer (within a petal 10 mm. long, there are 40-50 primary tubercles and in one 15 mm. long, there are 80-90) diploporum Genital pores in interambulacra, some distance from madreporite putnami Laganum laganum. Echinodiscus laganum Leske, 1778. Add. ad Klein, p. 140. Lagana laganum de Blainville, 1830. Diet. Sei. Nat., 60, p. 196. Plate 124, fig. 17. The tridentate pedicellariae of this species are rather characteristic and as they have never been figured, I have thought it desirable to show one valve (PI. 124, fig. 17). The geographical range of L. laganum is from the Philippine Islands, east to the Carolines, and southward to Tasmania. Laganum depressum. i, 'f. I-, ' i v'" " ' ' 'i-" ' Agassiz, 1841. Mon. Scut., p....show more

Product details

  • Paperback | 32 pages
  • 189 x 246 x 2mm | 77g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123666356X
  • 9781236663566