412 



were duly hatched, can only be explained by one of the following alterna- 

 tives : — 1) Either shat she was impregnated previous to the casting of the 

 two exuviae, i. e. in an early and therefore immature stage or: 2) Partheno- 

 genesis occurs in the Araneidea. Hitherto no instance of this latter (viz. 

 virgin production) has been recorded in the true spiders Araneida, though 

 Mégnin, Kramer, and Michael have shown that the females of some Acarini 

 couple with the males prior to their final moult and that practically there are 

 two stages of sexual maturity ; moreover Beck and others have related cases 

 of undoubted Parthenogenesis in the Acari. — A paper was read »On the 

 Indication of the Sense of Smell in Actiniae«, by Walter H. Pollock with 

 an addendum by G. J. Romanes. These authors record experiments 

 whereby it appears probable that these lowly organized creatures are aware 

 or evince recognition of the presence of food when placed near them. This 

 sense is evidently of a difi"used kind, and as suggested may be equivalent to 

 an imperfect olfactory kind. — A description was given of a new Infusorian 

 allied to Pleuronema and obtained in ponds near Hertford by J. W. Phillips. 

 — Thereafter two papers were read viz. : — »On Teredo utriculus Gmelin, 

 with remarks upon other Ship worms«, by Mr. Sylvanus Hanley; and P. XV. 

 of »Contributions to the Mollusca of the Challenger Expedition«, by the Rev. 

 R. Boog Watson, in this dealing with the Families Ranellaceae, Muricidae 

 Scalariidae and Solariidae. With a few remarks from the President conclu- 

 ding the session, the meeting adjourned till the 2nd November. — J. M u r i e. 



3. Notiz. 



Durch Berufung des Herrn Dr. Strasser als Prosector nach Frei- 

 burg i./Br. wird die Stelle eines Assistenten an der Anatomie zu Breslau 

 zum October d. J. erledigt. Einkommen etc. 1800 Ji . Meldungen appro- 

 birter Ärzte, welche zugleich Doctoren der Medicin und die Absicht haben, 

 die academische Laufbahn einzuschlagen, nimmt entgegen 



Prof. Dr. C. Hasse. 



IV. Personal-Notizen. 



Paris, 5. Juillet. — Mr. le Dr. Via lianes, Préparateur à la faculté 

 des Sciences de Paris est nommé Répétiteur à l'École pratique des Hautes- 

 Études (Laboratoire de Zoologie anatomique) en remplacement de Mr. le Dr. 

 Brocchi, démissionnaire. 



7. Juillet. — • Mr. le Dr. H. A. Robin, Préparateur-adjoint à la 

 faculté des Scienes de Paris est nommé Préparateur en remplacement de Mr. 

 le Dr. Via 11 ânes. 



Berichtigung. 



In den Artikel: Bemerkungen zu Prof. Bütschli's »Gedanken über 

 Leben und Tod« in Nr. 116 hat sich ein sinnentstellender Druckfehler ein- 

 geschlichen. Am Schluss, S. 380, Zeile II von oben, muss es heißen: »bei 

 dem Bearbeiter der Protozoen für Bronn's Classen und Ordnungen«, 

 statt : »bei dem Bearbeiten«. «# 



Druck Ton Breitkopf und Härte) in Leipzig. 



