A treatise on zoology . ose around the mouth. Anal region oftenprominent (Erinocystis, Jaekel, 18J)1)). Tlu plates usually have strongradiating folds, often crossed by liner concentric ridges (Fig. XXIT.).Here Jaekel (189U) places his Glaphyrocystls jind Scoliocystis, Ordovician,Kussin. Prunocy»ti», Forbes (1848), Slim inn, England, includes /.Fldrhcri and Krhinoencrinns Ixtccntus, Forhis (l-ig. XXI\.). Theca .shaped like tlu; fruit of a dog-rose. Adoral row of plates increasedin niiniber. Pectinirhombs on 1 k 5, 14 & 15, and 12 & 18 only. THE CVS TIDE A 6i Bracliioles clustered louiul iiioutl
A treatise on zoology . ose around the mouth. Anal region oftenprominent (Erinocystis, Jaekel, 18J)1)). Tlu plates usually have strongradiating folds, often crossed by liner concentric ridges (Fig. XXIT.).Here Jaekel (189U) places his Glaphyrocystls jind Scoliocystis, Ordovician,Kussin. Prunocy»ti», Forbes (1848), Slim inn, England, includes /.Fldrhcri and Krhinoencrinns Ixtccntus, Forhis (l-ig. XXI\.). Theca .shaped like tlu; fruit of a dog-rose. Adoral row of plates increasedin niiniber. Pectinirhombs on 1 k 5, 14 & 15, and 12 & 18 only. THE CVS TIDE A 6i Bracliioles clustered louiul iiioutli, probably live,slender, and comparativelylong. ScJiizocifdis, Juekel (1895), Silurian, England. Ty])e, KrJmwencrinusarmatus, Forbes (Figs. ). Arrangement of plates and rhombsas in Pnmocijstia; rhomb 12 & 18 sometimes absent. Ant., r. ant,, and1. post, food-grooves almost or entirely atrophied ; 1. ant. groove extendsnearly half-way down the theca on to ])late 11, is floured with alternating Rh-. XXV. & XXVI. Schizocystis armatus (fromBrit. Mus., E75S9 & E7590).X 2. XXV. from above;XXVI. from the abanal «.side. As, anus ; Jir, facets **for bracliioles ; fp, flooringplates of subvective groove ;in Fig. XXVI. the impressionsof these are seen in the distalpart of the groove ; Eh, thepectinirhonib of plates 14 &15 ; St, part of stem.
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology
