176 General Notes. 
to our fauna Anthophysa stagnatilis Hexamita gyrans Chloromonas, 
Balanitizoon gyrans, Gerda vernalis Rhabdostyla vernalis, R. cheeticola, 
Vorticella similis, V. vernalis, V. parasita, V. conica, Epistylis tincta, 
and Lagenophrys obovata. In the Annals and Magazine of Natural 
History for August, 1887, he adds: Onychodromopsis flexilis (n. g. 
et sp.) Tachysoma agile (n. g. et sp.) T. mirabile, T. parvistylum, 
Litonotus vermicularis, Loxodis magnus, Oxytricha biforia, O. 
hymenostoma, O. acuminata, O. caudata, Histrio inquietus, H. 
complanatus, Euplotes variabilis, and Chilodon voraz. e last 
species feeds voraciously upon diatoms, some of which were actually 
. . 
longer than the infusorian. 
Podarcella is the name given by Girard to a stalked Rhizopod 
allied to Arcella which occurs in the sea near Fécamp. The stalk 
is about one and one-half times as long as the lorica. 
orms.—The veteran, P. H. Gosse, describes twenty-four new 
British rotifers in the December number of the Journal of the 
Royal Microscopical Society. The specimens were from both fresh 
and salt water. 
Those interested will find a valuable article on the anatomy and 
histology of the Aphroditaceæ, by Dr, E. Rhode, in the second 
volume of Schneider’s Zoologische Beiträge, and one on the 
anatomy and histology of Wunice, by E. Jourdan, in the second 
volume (seventh series) of the Annales des Sciences Naturelles. 
Jourdan thinks he has founed the terminations of the nerves in 
the muscles ; does not regard the “ giant nerve fibre” of the vent 
cord as nervous but rather as a supporting structure ; describes the 
eye, found no glandular structures in the digestive tract, and de- 
scribes the segmental organs, pedal glands, and pigment organs. 
CrusTAcEA.—It is usually believed that hermit-crabs appro- 
priate dead shells for their homes but Mr. Lucas, in the Transac- 
tions of the Royal Society of Victoria, states that he witnessed a 
hermit attack a living Fasciolaria and little by little tear it in 
pieces, leaving the shell at last entirely empty. He also recalls the 
fact that, at least in tropical waters, the shells occupied by hermit- 
crabs have a fresh appearance, and he thinks that the crabs depend 
upon living shells rather than dead ones to form their homes. 
This certainly is not the case with the hermit-crabs in the colder 
Atlantic, 
Leichmann has settled by means of sections the existence of 
two polar globules in the egg of Asellus aquaticus. His short 
paper may be found in number 263 of the Zoologisches Anzeiger. 
