The Zoologist— April, 1874. 3949 



through the different stages and metamorphoses, from exclusion to 

 maturity, not to say old age — as there is no knowing at present at 

 what age they may arrive ; the growth of the lobster, for instance, 

 must be very slow, seeing that one of two years was of very moderate 

 size, and some fishes are well nigh as slow of growth. 



Mr. Newman, in the 'Zoologist' for February (S. S. 3878), ex- 

 presses regret at having missed seeing the porpoise in the Brighton 

 Aquarium : having been more fortunate, and watched its naovements 

 for a considerable time, I am of opinion that it is chiefly propelled 

 by an alternate lateral motion of the posterior parts, though the 

 transverse tail-fin may, and doubtless does, assist the porpoise in 

 the undulations of its course ; but the rapidity with which it swims, 

 even in confinement, is confusing to the sight. 



Henry Hadfield. 



Rhinoceros Sondaicus at the Zoological Gardens. 

 By Edward Newman. 



Edward Blyth, whose knowledge of Indian Mammalia was 

 unrivalled, and whose death we are still lamenting, published, at 

 page 8506 of the ' Zoologist' for 1863, the most exhaustive "Me- 

 moir on the living Asiatic Species of Rhinoceros" that has ever 

 appeared. He collected every previously printed allusion to these 

 huge beasts, and systematized the whole into one masterly essay. 

 One of the most remarkable inferences from this paper is that the 

 adult male rhinoceros which lived so many years at the Zoo, and 

 for which the Society paid £1000, was Rhinoceros sondaicus, the 

 species now exhibiting in the Elephant House. It seems singular 

 that any doubt should exist on such a point, and forcibly illustrates 

 the necessity of having drawings made of everj' animal added to 

 that grand collection, excepting when an undoubted individual of 

 a species previously figured; such a collection of drawings would 

 not only prove a source of educational and instructive interest, but 

 form an invaluable historical record of that admirable institution. 



The two species of Asiatic one-horned rhinoceros may be sup- 

 posed included by Linnaeus under the name of Rhinoceros 

 unicornis, while his Rhinoceros bicornis may be supposed to 

 include the genus as represented by the African species. This 

 division is, however, by no means exact, since the one-horned 

 Asiatic rhinoceros unquestionably includes two species, which have 



SECOND SERIES — VOL. IX. V 



