Contents (continued). 
December 7, 1886. 
Prof. Bell. Exhibition of, and remarks upon, a specimen of Tenia nana ............+.4. 505 
1. Observations on the Development and Structure of the Ovum in the Dipnoi. By Frayx 
BE. Bepparp, M.A., F.R.S.E., Prosector to the Society, and Lecturer on Biology at 
~ PEIGIAPELORDIGAL. © (ERIN TLL V.): 4. iyo cj. sls iwigin* o hagale sleiuywengelalrelpe ents de a 505 
2. On the Anatomy and Systematic Position of the Liassic Selachian, Sgualoraja poly- 
spondyla, Agassiz. By A. Smiru Woopwarp, F.G.S., of the British Museum (Natural 
Bena cums) Am ee LALA Ll Viel ss areata. cia tvelniee) g:00)8 wiv Sia: yh a'e!cia 3,0: Setelene’s Belaumerdge@ nels eons 527 
3. On an apparently new Parrot of the Genus Conwrus living in the Society’s Gardens. By 
3 P. L. Sctarer, M.A., Ph.D., F.R.S., Secretary to the Society. (Plate LVI.)........ 538 
4, On an undescribed Pimelepterus from Port Jackson. By J. Doveras Ocriey, Department 
; of Fishes, Austr. Mus. Sydney. (Communicated by F. Day, C.1.E., F.Z.S.)........ 539 
a 
: 
5. On the South-African Tortoises allied to Testudo geometrica. By G. A, Bou.encrr. 
ka | ar see Vi Nas age NW MDs) tare Sen ie Syed Stora ow: < Queso /6/< mia 5: (6.5 MINI w «:.0.3\ 6:0 mie ioe o/aigim'e vie 540 
6. Remarks on Prof. W. K. Parker's paper on the Skull of the Chameleons. By G. A. 
peta YESH CTs ahaocaieas erpeatet eam tian’ fer caee a RIA) oleieis elehele( Scie, a Pat's «5, ME oo giao 4 Guys ahers 543 
7. On the Wallaby commonly known as Lagorchestes fasciatus. By Orprierp Tuomas, 
Natural tustory Museum. | (Plate WERs)) 60. Feces o. cscs ech neo vee edesivces 544 
8. On Phascologale virginia, a rare Pouched Mouse from Northern Queensland. By Rosert 
Rbaavirret tie Gl Me 219.00) (ENALO IECRE) oe Ries at oe) aitie cvensews wie tieg~ suet “Heda ase a. 548 
December 21, 1886. 
Th The Secretary. Report on the Additions to the Society’s Menagerie in November 1886 .... 549 
Se Mr. Howard Saunders. Exhibition of, on behalf of Mr. R. J. Howard, and remarks upon, 
4 a specimen of a hybrid between the Tufted Duck and the Pochard ................ 550 
ey 
1. On Atavism. A Critical and Analytical Study. By J. Buanp Surron, F.R.O.S., Lecturer 
on Comparative Anatomy, Middlesex Hospital, Erasmus Wilson Lecturer on Patho- 
PoPaeE Nye eOOllop er OL PUNECONS 6 \abisisre.cieisics sissies sue v ets ce caessvicls veiaesauemgae H5t 
2. On the Systematic Position and Classification of Sponges. By R. v. Lenprnrrxp, Ph.D., 
fk F.LS., Assistant in the Biological Laboratory of University College, London ........ 558 
Ro: o Indian Earthworms.—Part I. Preliminary Notice of Earthworms from the Nilgiris 
ret and Shevaroys. By Aurrep Gisss Bourne, D.Sc. (Lond.), F.LS8., Fell. Univ. Coll. 
> _ Lond., Fell. Madras Univ., Professor of Biology in the Presidency College, Madras. 
ow (Communicated by Prof. Ray Lanxester, F.Z.8.) 0.0 ..0c cece cece cece ee en ee tees 662 
_ Appendix : List of Additions to the Society’s Menagerie during the Year 1886.......... «. 673 
‘Index. RROTAV SIAC ctereye isis =) 2s Ot ORE II ee oem Laer up athintas hc ease ee 699 
