339 



Dieser Plexus ist am deutlichsten in der Region der cylin drisch en 

 Zellen und unter den oberflächlichsten abgeplatteten Zellen, indem an 

 beiden Stellen zahlreiche mehr oder minder horizontal verlaufende 

 Astchen abgegeben werden. 



Ein so bedeutender subepithelialer Plexus, wie Hoy er bei den 

 höheren Wirbelthieren gefunden hatte, wurde nie beobachtet, ohne 

 seine Anwesenheit in Abrede stellen zu wollen, da die Darstellung der 

 Nerven in der Fischcornea eine sehr schwierige Aufgabe ist und die 

 Unzulänglichkeit der bisher angewandten Goldmethoden einen nega- 

 tiven Schluss nicht erlaubt. 



Die Nervenvertheilung nähert sich am meisten der der Amphibien, 

 zeigt jedoch vereinfachte Verhältnisse. 



III. Mittheilungen aus Instituten, Gesellschaften etc. 



1. Zoological Society of London. 



17. May, 1881. — The Secretary read a report on the additions that 

 had been made to the Society's Menagerie during the month of April, 1881, 

 amongst which special attention was called to an Indian Darter [Plotus me- 

 lanogaster), received in exchange from the Zoological Gardens, Calcutta; a 

 female Beisa Antelope [Oryx beisa], born in the Gardens April 12th, believed 

 to be the first example of this Antelope that had been bred in captivity : and 

 a Mountain Ka-Ka [Nestor notabalis], transmitted as a present to the Society 

 by Dr. A. de Lautour of Otago, New Zealand. — Mr. S dater exhibited 

 and made remarks on examples of four Parrots of the genus Chrysotis from 

 various Islands of the Lesser Antilles. — A communication was read from 

 Mr. Carl Bock, in which he gave an account of the Land and Fresh Water 

 Shells, collected in the highlands of Padang, Sumatra , and in the Eastern 

 and Southern parts of Borneo, during his travels in those districts. Eight 

 new species were described. — A communication was read from Mr. G. B. 

 Sowerby, Junr., containing descriptions of eight new species of Shells 

 fi'om various localities. — Mr. W. A. For b e s read a paper on the anatomy 

 and systematic position of the Jacanas [Parridae] , which he showed were in 

 no degree related to the Rails, but form a separate group to be placed amongst 

 the Plovers and allied Birds [Limicolae] . The author also called attention to 

 the peculiar form of the radius in the genus Metopidms , which is not deve- 

 loped in the other genera of this group. — A communication was read from 

 Mr. L. Taczanowski, C.M.Z.S., containing the description of a new 

 species of Weasel from Peru, proposed to be called Mustela Jehkii, after its 

 discoverer. — A communication was read from Mr. W, F. Kir by, con- 

 taining a description of the Hymenopterous Insects collected in Socotra by 

 Professor Bayley Balfour. Of these two were apparently new to science. — 

 A communication was read from Mr. Francis Day, F.Z.S., containing re- 

 marks on the range of Apogon Ellioti. — P. L. Sciate r. Secretary. 



