CONTENTS 
CONTENTS OF No. CXIII, N.S., JULY, 1888. 
MEMOIRS : page 
Haplodiscus piger; a new Pelagic Organism from the Bahamas. 
By W. F. R. Weldon, M.A., Fellow of St.John’s College, Cam- 
bridge, Lecturer on Invertebrate Morphology in the University. 
(With Plate I) . . . . . . . 1 
The True Teeth and the Horny Plates of Ornithorhynchus. By 
Edward B. Poulton, M.A., F.L.S., of Jesus and Keble Col- 
leges, Oxford. (With Plates II, III, and IV) . . .9 
Note on the Fate of the Blastopore in Ran a temporaria. By 
Harold Sidebotham, M.R.C.S. (With Plate V) .49 
Morphological Studies. — I. The Parietal Eye of the Cyclostome 
Fishes. By J. Beard, Ph.D., B.Sc. (With Plates VI and VII) 55 
On Some Oigopsid Cuttle Fishes. By F. Ernest Weiss, F.L.S., 
from the Zoological Laboratory, University College, London. 
(With Plates VIII, IX, and X) 75 
The Organ of Verrill in Loligo. By Malcolm Laurie, B.Sc., 
from the Zoological Laboratory of University College, London. 
(With Plate XI) 97 
CONTENTS OF No. CX1V, N.S., OCTOBER, 1888. 
MEMOIRS : 
On the Structure of Three New Species of Earthworms, with 
Remarks on Certain Points in the Morphology of the Oligochseta. 
By Frank E. Beddard, M.A., Prosector of the Zoological 
Society, Lecturer on Biology at Guy’s Hospital. (With Plates 
XII and XIII) 101 
