. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . to the oral end. It has no tentacles. Idyiais pink and especially highly colored at the spawning-time. Like other jellyfishes, their part in life is fin-ished when they have discharged their spawn, and thefirst September storms break them to pieces. In Julyand August they are plentiful on the New Englandcoast. They appear at the surface of the water inthe hottest part of the day, but disappear entirelywhen the water is in the least rough or the weather iscold or the sun overca
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . to the oral end. It has no tentacles. Idyiais pink and especially highly colored at the spawning-time. Like other jellyfishes, their part in life is fin-ished when they have discharged their spawn, and thefirst September storms break them to pieces. In Julyand August they are plentiful on the New Englandcoast. They appear at the surface of the water inthe hottest part of the day, but disappear entirelywhen the water is in the least rough or the weather iscold or the sun overcast. Their movements are slowand graceful, the long axis being carried in a nearlyhorizontal position. They are exceedingly voracious,feeding chiefly on other Ctenophora, and often swal-lowing animals as large as themselves. I. cyanthina. This species, found on the north-ern Pacific coast, broadens near the center, making it somewhat vase-shaped. Idyopsis Clarkii, a similar genus, found in Florida, is these species are very beautiful, the rapid movement of the cilia givingthem a brilliant Idyia roseola, half nat-ural size: d, e,f, g, h, rowsof locomotive flappers. Ill WORMS (PLATYHELMINTHESNEMATHELMINTHESANNULATA) TABLE SHOWING THE CLASSIFICATION OF THE WORMSDESCRIBED IN THIS CHAPTER PhylumPLATYHELMINTHES ClassTURBELLARIA OrdersPOLYCLADIDA TRICLADIDARHABDOCCELIDA Genera f. PlanoceraI Stylochopsisv LeptoplanaPlanariaFrocerodes BdellouraFovia ClassTREMATODA (External and internal parasites ) ClassCESTODA (Internal parasites)Class NEMERTINEATetrastemmaNemertes Meckelia Cerebratulus Cosmocephala Polina 160 Species F. nebulosaS. littoralisL. foliumF. griseaF. frequensB. rusticaB. CandidaF. Warrenii T. arenicolaN. socialisN. viridisM. ingensM. roseaC. angulatusC. ochraceaP. glutinosa WORMS 161 Phylum NEMATHELMINTHES Class NEMATODA GenusPontonema P. Species OrdersEBKANTIA Families SYLIID^E APHRODITIDJE Phylum ANNULATA Class CH^TOPODA SubclassPol
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
