Proceedings of the Royal Society of Queensland . idia, rectum, liver and muscle impressions. Theanatomy of small and medium sized specimens can be easilystudied in Canada balsam after prolonged decalcificationin rather strong acid acohol (70 per cent, alcohol with 3per cent. HCl.) followed by gradual dehydration and clear-ing in clove oil. The use of a weak solution of Ehrlichsor Delafields hematoxylin followed by careful and pro-longed decolorisation, gives a very good result. The muscle scars are arranged as in L. anatina. Nomarked submarginal scar for the insertion of the setaemusculature w
Proceedings of the Royal Society of Queensland . idia, rectum, liver and muscle impressions. Theanatomy of small and medium sized specimens can be easilystudied in Canada balsam after prolonged decalcificationin rather strong acid acohol (70 per cent, alcohol with 3per cent. HCl.) followed by gradual dehydration and clear-ing in clove oil. The use of a weak solution of Ehrlichsor Delafields hematoxylin followed by careful and pro-longed decolorisation, gives a very good result. The muscle scars are arranged as in L. anatina. Nomarked submarginal scar for the insertion of the setaemusculature was recognised. King (p. 12, fig. 5) did notobserve it in L. anatina. The deltidial region (text-figure6) resembles in most details that described by this authorfor L. anatina. BY T. HARVEY JOHNSTON AND OTTO S. HIRSCHFELD. 71 The pallial pigment is constant in position (text-figure5), resembling somewhat that figured by Morse (pi. 52,fig. 10) for the Japanese L. anatina. Sometimes the pig-mentation is not so heavy and consequently not so evident. Text-figures 1-8. 72 THE LINGULID^] OF THE QUEENSLAND COAST. but the general disposition of the patches is believed the arrangement to be of specific value. Weagree with his suggestion (p. 349) that these areas are prob-ably sensitive to light. They are restricted to those portionsof the pallium lying in the translucent region of the shellwhich can be projected above the surface of the sand. The peduncle is highly contractile (text-figure 2). Inlife the centre is creamy in colour but has a tinge of pinkafter preservation. The horny envelope is quite trans-parent. The whole peduncle and also its inner muscularportion gradually become narrowed as they pass back fromthe insertion into the ventral valve, being narrowest just infront of the ampulla where the stalk widens as athin walledorgan. The horny layer of the anterior part of the ampullais considerable thickened. Surrounding the ampulla is atube of agglutinated sand grai
Size: 1301px × 1921px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectnaturalhistory, booky
