100 NOTAMIIDJ-:. 



series of cells wliicli compose the shoot are continuous 

 from their point of origin to the termination of the branch 

 to which they belong; e.g. the series which originate 

 from the two primary cells pass uninterruptedly to the 

 extremities of the branches of which they constitute the 

 halves. And the same holds good of all the new series 

 intercalated at the bifurcations. It will be noted that above 

 each bifurcation there is only a single cell instead of the 

 usual pair. There are some irregvilarities in the composi- 

 tion of the first internode ; but the above is the general 

 plan of the structure. 



Those who desire to master all its minutiae may refer to 

 Mr. Busk's paper in the 'Transactions of the Microscopical 

 Society/ in which he has given an exhaustive account of 

 the structural details *. 



The zooecium of Nolamia bears a general resemblance 

 to that of Bicellaria. 



NoTAMiA BURSARiA, Liuuaeus. 

 Platfe IV. figs. 1-5. 



iShepherd's-phrse Coralline, Ellis, Corall. 41, pi. xxii. figs, a, A : Johnst. 



B. Z. ed. 2, i. 294, pi. li. figs. 1, 2. 

 Sertularia Bi'RSARiA, Linn. Syst. 1314. 

 Cellularia buksaria, Pall. Elench. 65. 



Cellaria bursaria, EU. cf- Sol. Zooph. 25 : Lamk. An. s. V. ed. 2, ii. 189. 

 Dynamena bursaria, Lamx. Pol. cor. flex. 179. 

 NoTAMiA BURSARIA, Flcm. B. A. 541 : BusJc, Trans. Mier. Soc. ii. (1849), 



110, pi. XXV. ; B.M. Cat. i. 36, pi. xlv. figs. 1-4. 

 Gemicellaria BURSARIA, Blainv. Diet. So. N. Ix. 445 : Landsb. Pop. Hist. 



297, pi. xvi. fig. 59. 

 Sbrtularia BURSA, Tuvt. Brit. Fauu. 216. 

 Epistomia BURSARIA, Gray, B.M. Ead. 82. 



* 'Transactions of the Microscopical Society of London,' yol. ii. (1849), 

 pp. 110-121, pi. XXV. 



