626 
Minchin, E. A., on the oscula and 
anatomy of Leucosolenia clath- 
rus, 477 
Myxine, spermatogenesis in, 169 
Nauplius eye in Decapods, by Mar- 
garet Robinson, 283 
Nephridia of Prosobranchs, by von 
Erlanger, 587 
Nudibranchiata, the innervation of the 
cerata of, by Herdman, 541 
Oka and Willey on Synascidians from 
Japan, 313 
Oligocheta, researches into the em- 
bryology of, No. I, by Beddard, 497 
* some aquatic forms of, 
by W. B. Benham, 187 
Oligochete, a new branchiate, by 
Beddard, 325 
Onchnesoma, by Arthur Shipley, 233 
Ornithorhynchus, true teeth of, by 
Charles Stewart, 229 
Oviduct of the frog, development of, 
by MacBride, 273 
Polyzoa, excretory processes in, by 8. 
F. Harmer, 123 
Prosobranchs, nephridia of, by von 
Erlanger, 587 
Rejuvenescence and senescence, by 
Hartog, 1 
INDEX. 
Retina, pigment cells of, by Boden 
and Sprawson, 365 
Robins, Arthur, on the develop- 
ment of mammals, 369 
Robinson, M., on the nauplius eye 
persisting in some Decapods, 283 
Sedgwick, notes on Elasmobranch de- 
velopment, 559 
Senescence and rejuvenescence, by 
Hartog, 1 
Shipley on Onchnesoma, 233 
Slater on the differentiation of leprosy 
and tubercle bacilli, 219 
Spermatogenesis in Myxine, by J. T. 
Cunningham, 169 
Sponges, histology of, by Minchin, 
251 and 477 
Sprawson and Boden on the pigment 
cells of the retina, 365 
Stewart on the true teeth of Orni- 
thorhynchus, 229 
Synascidians from Japan, 313 
Teeth of Ornithorhynchus, by Charles 
Stewart, 229 
Waters on the primitive segmentation 
of the Vertebrate brain, 457 
Weldon on the germ-layers of Cran- 
gon vulgaris, 343 
Willey and Oka on Synascidians from 
Japan, 313 
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