28 

 3. Berichtigung. 



(Zu dem Aufsatze in No. 520, p. 526.) 

 Von Oswald Kieschnick in Jena. 



p. 527. Genus Stelletta O. Schmidt, emend. »Kieselschwämme 

 mit triänen und amphioxen Megascleren und mit streng radiären 

 Ästen, zu denen sich selten Rhabdodragme gesellen. Mit kleinen 

 kugligen Geißelkammern und meist einer E-inde (R. von Lenden- 

 feld, F. E. Schulze). Microrhabde können eine mehr oder weniger 

 dichte Schicht der Oberfläche bilden«. 



p. 533. Anstatt » Tricanophora Ridley und Tricanophora incrustans 

 n. sp.« muß es heißen » Thricanophora und Th'icanophora incrustans 

 n. sp.« 



II. Mittheilnngen aus Museen, Instituten etc. 



1. Zoological Society of London. 



15*^^ December, 1896. — The Secretary read a report on the additions 

 that had been made to the Society's Menagerie during the month of November 

 1896. — Mr. S dater exhibited two bound volumes of original drawings 

 by Joseph Wolf and Waterhouse Hawkins , belonging to the Knowsley Li- 

 brary, which had been kindly lent to him for examination by the Earl of 

 Derby. They represented various animals that had been living in the 

 Knowsley Menagerie, 1844 — 48. — Mr. W. Bateson exhibited and made 

 remarks on some Pigeons with very well-marked webs between the toes. — 

 Prof. Newton sent for exhibition the type-specimen oi Heterorhynciius oli- 

 vaceus of Lafresnaye, kindly entrusted to him by Prof. Hyatt, Curator of the 

 Museum of the Boston Natural History Society. This extinct species, now 

 referred to Hemignathiis lucichis of Lichtenstein, was peculiar to Oahu, one 

 of the Sandwich Islands, and the present appeared to be the only full-plu- 

 maged male specimen ever seen in this country. — Dr. G. Herbert Fowler 

 read a paper entitled "Contributions to our Knowledge of the Plankton of 

 the Faeroe Channel," which contained an account of the first results arrived 

 at from his examination of the marine fauna of this channel during a voyage 

 in it, in July and August last, in H.M.S. 'Research' (Capt. Moore). — The 

 Secretary read a paper by Mr. Oldfield Thomas, entitled "On the Genera of 

 Rodents, being an attempt to bring up to date the current arrangement of 

 the Order." Taking as a basis Alston's paper on the Rodents, published in 

 1876, the main object of the present communication was to place in their 

 proper positions the many genera described since that author's time. In 

 regard to the larger groups , Alston's arrangement had been followed as far 

 as possible: but among other things it had been thought better to elevate 

 the subfamily Bathyerginae into a family, to make two families of the Hys- 

 tricidae, one for the Old-World and one for the New- World Porcupines, and 

 to give to the subfamilies Geomyinae and Heteromyinae full family rank. 

 All the recent genera of the order were enumerated, to the number of 158, 

 as compared with 100 in Alston's list. — Dr. J. W. Gregory gave a de- 

 scription of Lt/sechinus J a new genus of Plesiocidarids from the Tyrolese 



