Miscellaneous. 427 



] t will be noticed in the case of the three diurnals, that the 

 extra wing is always a right secondary, whilst in the Cecropia it is 

 a left primary. — Proc. Acad. Nat. Sci. Philad. 1885, p. 26. 



Neiv Bhizopoda of the deep-water Fauna of the Lake of Geneva. 

 By Dr. Henri Blanc. 



In 1879 Prof. Du Plessis noted* three species of Bhizopods 

 obtained by him and M. Kursteiner in mud from a depth of 

 45 metres otF the Mole of Ouch)', namely, Amoeba princeps, Duj., 

 A. terricola, Greef, and Dijjlugia proteiformis, Ehr. The author 

 has made his investigations in the same locality, but at a greater 

 depth, namely from 70 to 120 metres, partly by dredging and 

 partly by sinking glass- plates and leaving them for some weeks to 

 get covered with the mud. He obtained eight species not taken by 

 Prof. Du Tlessis. Prof. Forel and the author also procured another 

 species off Morges, and this brings the number of known deep-water 

 Bhizopods of the Lake of Geneva to twelve, of which the author 

 gives the following list : — 



1. Amoeba proteus, Leidy, = ^4. princeps, Duj. Very common. 



2. verrucosa, Ehr., = A. terricola, Duj. Frequent. 



3. radiosa, Ehr. Bare. 



4. Difftugia pyriformis, Perty. Frequent. 



5. urceolata, Carter. Bare. 



6. globulosa,Di\j., = D. proteiformis, Ehr. 



7. Hyalosphenia cuneata, Stein. Very rare. 



8. Arcella vulgaris, Ehr. Pretty common. 



9. Centropyocis acideata, Stein. Pretty common. 



10. Pamphagus hyalinus, Leidy. Very rai'e. 



11. Act inophrys sol, Ehr. Very frequent. 



12. A large Dijjlugia found off Morges by Prof. Forel and the 



author, probably a new species. 



The author remarks that the whole of the above Bhizopods have 

 been observed by Leidy in the surface-waters of the United States, 

 which gives them a very wide geographical distribution ; and, 

 further, that the species iudicated as rare by Leidy are so also in the 

 deep waters of the lake. — Bull. Soc. Vaud. Sci. Nat. ser. 2, vol. xx 

 p. 287. 



On the Nervous System of the Bothriocephalidae. 

 By M. J. Niemiec. 



The author has investigated several scolices of Bothriocephalus 

 lotus and also of a species parasitic in the dog. He has employed 

 the method of sections. 



Following the series of transverse sections the sixth from the 

 free extremity of the scolex presents, near the middle, some irre- 

 gular clear spots, and following the descending series these spots are 



* " MattSriaux pour servir a l'etude de la faune profonde du lac Le- 

 man" in Bull. Soe. Vaud. Sci. Nat. vol. xvi. p. 160. 



