File:Transactions and proceedings of the New Zealand Institute (1908) (14783200093).jpg

Identifier: transactionsproc41newz (find matches)
Title: Transactions and proceedings of the New Zealand Institute
Year: 1908 (1900s)
Authors: New Zealand Institute
Subjects: Science
Publisher: Wellington : J. Hughes, Printer
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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ear to have only a small number of armsat first (4 to 7), and the others are budded afterwards. Recently I andmy family were spending the summer holidays at Muritai, on the otherside of the bay, where a company of Italian fishermen draw their seinenets ashore on fine evenings. There were always a few large examples,10 in. to 12 in. in diameter, with 10 or 11 equal arms, and often some smallerones with a less number of unequal arms (the smaller the specimen theless the number of arms), and on one occasion my son Harry found twovery young ones among the refuse of the net. These had only 2 arms each,and measured about 1 in. between the tips of the arms. The 2 arms ofboth examples were the same size and equally developed, and one specimenhad one and the other two little tubercles on the side of the disc—thebeginnings of other arms just starting to bud out. It therefore appearsprobable that the young of this species have only 2 arms at first, and the Trans. N.Z. Inst., Vol. XLI. Pl. XII.
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S.S76 NEW ZEALAND STARFISH.—Farquhar. Face p. 128 Farquhar.—Further Notes on Neiv Zealand Starfishes. 129 number increases with age until 10 or 11—usually 11 in Port Nicholson—are developed. Species which divide, and those in which the number of arms increasesby budding from the disc, usually have more than 1 madreporic plate.Stichaster insignis usually has 4-, but examples may be found with 1, 2, or3 ; Stichaster polyplax has from 1 to -1; and Asterias calamaria often has2 or 3. Asterias calamaria var.. reischeki, var. n. I described a variety of Asterias calamaria in vol. xxi, page 187, of theTransactions, which occurs freely at Nelson, under stones at low water.Its general facies differs much from that of the form which is common inPort Nicholson. The arms are not stout and rounded at the tips like theWellington specimens and the Mauritius forms as figured by Loriol, butare more delicate, and taper evenly to a very fine extremity ; and the spinesare never coarse or truncate

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