iv CONTENTS. 



On the Hemoglobin Crystals of Rodents' Blood. By W.D. Halli- 

 burton, M.D., B.Sc, Assistant Professor of Physiology, Uni- 

 versity College, London . . . . . .181 



An Easy Method of obtaining Methgemoglobin Crystals for Micro- 

 scopic Examination. By W. D. Halliburton, M.D., B.Sc, 

 Assistant Professor of Physiology, University College, London . 201 



CONTENTS OE No. CX, N.S., NOVEMBER, 1887. 



MEMOIRS : 



On the Development of Peripatus Novae Zealandise. By Lilian 

 Sheldon, Bathurst Student, Newnham College. (With Plates 

 XII. XIII, XIV, XV, and XVI) . . . .205 



On Some Points in the Anatomy of Polychseta. By J. T. Cun- 

 ningham, B.A., F.R.S.E., Eellow of University College, Oxford. 

 (With Plates XVII, XVIII and XIX) . . . .239 



On Temnocephala, an Aberrant Monogenetic Trematode. By 

 William A. Haswell, M.A., B.Sc, Lecturer on Zoology and 

 Comparative Anatomy, Sydney University. (With Plates XX, 

 XXI, and XXII) . . . . . .279 



Notes on Echinoderm Morphology, No. XI. On the Development 

 of the Apical Plates in Amphiura squamata. By P. 

 Herbert Carpenter, D.Sc, F.R.S., F.L.S., Assistant Master 

 at Eton College . . . . . . .303 



CONTENTS OE No. CXI, N.S., FEBRUARY, 1888. 



MEMOIRS : 



The Photospheria of Nyctiphanes Norvegica, G. O. Sars. By 

 Rupert Vallentin and J. T. Cunningham, B.A., Fellow of 

 University College, Oxford. (With Plate XXTI1) . .319 

 On the Early Stages of the Development of a South American 

 Species of Peripatus. By W. L. Sclater, B.A., F.Z.S. (With 

 Plate XXIV) 343 



