HARDWICKE'S SCIENCE-GOSSIP. 



221 



shell, but the anterior aperture is not everted. It 

 may be only an imperfectly developed variety. 



P. cuspidata (Wallich).— Siliceous, hyaline ; body 

 oval, surmounted at one extremity by two, and at 

 the other by a single mucrouate process ; surface 

 of shell] grooved longitudinally and transversely 

 striate. 



d 



Fig, 



150. a. Frotocystis nurila, b. Ditto, var. 

 c. P. globularin. d. P. cuspidata. 



Only a single specimen, and that mounted in 

 balsam, was obtained by me ; thus no opportunity 

 was afforded for tracing out its characters more fully. 



North Atlantic, 2,000 fathoms (Cg. 150, d). 



The preceding are all the species described and 

 figured by Dr. Wallich. I have now to add another 

 species to this remarkable genus, and I have great 

 pleasure ia naming it after that eminent naturalist 

 and raicroscopist. 



P. WalUchiaiia (Kitton). — Body siliceous, circular 

 in front view, side viewovate; process single, straight, 

 hyaline ; surface of body finely punctate ; colour in 

 balsam pale brown. Eig. 152, a side view. 



Algoa Bay Guano. 



Fig. 151. Frotocystis Wallichiana, x 400. 



Fig. 152. Side view of Frotocystis Wallichiana. 



This very fine form was not uncommon in guano 

 from Algoa Bay. My old friend and correspondent, 

 the late J. Norman, Esq., of Hull, provisionally 

 named it Coscinodisus caudatus, and I believe dis- 

 tributed slides of it under that name. In Dr.Wal- 

 lich's description of the figures, P.globiduris is called 

 P. lageniformis, and P. ctispidafa, P. spinifera. 



E. Kitton. 



EOSSIL MONKEYS. 



IN view of the discussion on the antiquity of 

 man, and his probable descent, it will not be 

 uninteresting to notice those quadrumauous animals 

 which stood highest in the natural history scale 

 before man made his appearance, and the relative 

 epochs at which they lived. Erom the following 

 brief notes on an article in the Annals of Natural 

 History for September, it will be seen that some of 

 the existing genera of monkeys have a great an- 

 tiquity. The greater part of the fossil monkeys 

 known up to the present day belong to the Miocene 



