72 ON A STRAP MADE OF OKAPI SKIN. [June 3, 



which have a dorsal anus and a multiseriate I'adula. As a family 

 the Janid?e are characterized by the presence of hepatic diverticula 

 and of cerata in the anterior portion of the dorsal surface, in 

 front of the rhinophores. Another chai'acter peculiar to the 

 family, but not universal in it, is the crest between the i-hino- 

 phores. There are four well-marked genei'a : — Madrella, with 

 lateral anus, triseriate radula, papillous rhinophores, a rudimen- 

 tary crest, and jaws without teeth. The othei- three genera have 

 the additional peculiarities of a doi-sal anus and a multiseiiate 

 radula. Proctonotus has simple rhinophores, no ci'est, and jaws 

 without denticles. Janolus has peifoliate mandibles and very 

 large jaws without denticles ; the foot is also excej)tionally broad. 

 Janus has perfoliate rhinophores, a toothed mandible, and a crest. 



EXPLANATION OF THE PLATES. 

 Plate V. 



Figs. 1, 2. Crosslandia viridis, p. 64. 



3. „ „ var. {?)fusca. 



4. „ „ outer teeth of two consecutive rows of the radula. 



5. „ „ rhinophore cup, one side removed. 



6. „ „ central and inner teeth of radula. 



7. „ „ jaws, from in front. 



8. „ „ jaws, from the side. 



Plate VI. 

 Fig. 9. Zatteria hrowni, p. 62. 



10. „ „ diagrammatic view showing position of cerata. 



11. „ „ one of the cerata. 



12. „ „ tooth of radula. 



13. „ „ view of head from below. 



14, 15. Madrella ferruginosa, p. 71, dorsal and ventral view. 

 16. „ „ one row of radula — a, median ; h, h, lateral 



teeth. 



Jtuie 3, 1902. 



Dr. Henry Woodward, F.R.S., Vice-President, in the Chair. 



Mr. W. L. Sclater, F.Z.S., made some remarks on the present 

 condition and future pi'ospects of the Zoological Museums of South 

 Africa, most of Avhich he had i-ecently visited. These were 

 altogether eight in number, four of which were in the Cape 

 Colony — namely, the South African Museiun at Cape Town, the 

 Albany Musevim at Grahamstown, the King-William's-Town 

 Museum, and the Port Elizabeth Museum. In ISTatal there were 

 Museums at Durban and Pietermaritzburg, in the Transvaal the 

 Museum at Pretoria, and in the Oi-ange River Colony the National 

 Museum at Bloemfontein. 



Mr. Boulenger exhibited a strap made of OkajDi skin, which 

 had been received, along with other ethnographical curiosities at 

 the Abbey of Maredsous, in Belgium, in December 1899, thus 

 some time previous to the arrival in this covmtry of the piece of 

 skin on which '■'■ Equus johnstoni" (P. Z. S. 1901, vol. i. p. 50) had 

 been founded. This object had been obtained by M. E. Vincart 

 a lieutenant in the service of the Congo State, in the Mangbettu 



