CONTENTS. 



PART I. APRIL, 1892. 



PAGE. 



I. ON SPLACHNIDIUM KUGOSUM GREV., THE TYPE OF A NEW ORDER 

 OF ALG^:. By Margaret O. Mitchell, former Bathurst Student, 

 Newnham College, Cambridge, and Frances G. Whitting, former 

 Student of Newnham College, Cambridge . . . . i 



II. ON A FOSSIL ALGA BELONGING TO THE GENUS CAULERPA, FROM 



THE OOLITE. By The Editor 1 1 



III. ON THE STRUCTURE OF DICTYOSPHMRIA DECNE. By The Editor 16 



IV. ON MALFORMATIONS OF ASCOPHYLLUM AND DESMARESTIA. By 



Ethel Sard Barton . . . . . . . . .21 



V. ON CONCHOCELIS, A NEW GENUS OF PERFORATING ALG^E. By E. 



A. L. Batters, B.A., LL.B., F.L.S. 25 



PART II. MAY, 1893. 



VI. NOTES ON THE MORPHOLOGY OF THE FUCACE& : . . 29 



COCCOPHORA LANGSDORFII GREV. By A. Lorrain Smith . . 30 



SEIROCOCCUS AXILLARIS GREV. By A. Lot-rain Smith . . 32 



XlPHOPHORA BlLLARDIERII MONT. By E. S. Barton . . 35 



NOTHEIA ANOMALA BAIL, and HARV. By M. O. Mitchell . 36 



SARCOPHYLUS POTATORUM KUTZ. By F. G. Whiting . . 38 



VII. ON CHLOROCYSTIS SARCOPHYCI, \ NEW ENDOPHYTIC ALGA. By 



F. G. Whitting ......... 41 



VIII. ON HALICYSTIS AND VALONIA. By The Editor . . . -47 



IX. ON THE STRUCTURE OF HYDROCLATHRUS BORY. By M. O. Mitchell 53 



X. ON THE CRYPTOSTOMATA OF ADENOCYSTIS, ALARIA AND SAC- 



CORHIZA. By The Editor 59 



XI. A COMPARISON OF THE MARINE FLORAS OF THE WARM ATLANTIC, 



INDIAN OCEAN, AND THE CAPE OF GOOD HOPE. By The Editor 65 



(P 



