168 



feeders, such as the Oribatidae and Tetronychi. He further concludes 1 . that 

 Mégnin is correct in saying Gamasus coUoptratorum and other allied creatures, 

 with the conspicually divided dorsal plates , are not species at all, but are 

 immature stages of other species, 2. that the division of the dorsal plate is, 

 in most cases in all events, a question of degree, and does not form a sound 

 basis for classification, as applied by Koch, Kramer and others; 3. that the 

 dorsal plates do not grow gradually, but alter in size, shape, or development 

 of the ecdysis; 4. that Mégnin is right in saying that the characteristic of 

 the so-called G. marginatus is simply a provision possessed by the females of 

 a large number of species ; 5 . that the extent of the white margin depends 

 upon the extent to which the abdomen is distended by eggs ; 6. that Még- 

 nin is in error in saying that CoUoptratorum \s, the nymph of Crassipes. The 

 nymph of crassipes does not show any divided dorsal plates which can be seen 

 on the living creature ; 7 . that in the species bred there has not been obser- 

 ved any inert stage before the transformations or ecdysis; 8. that in the 

 same species copulation takes place with the adult female and not with the 

 immature one, as Mégnin contends, and that it is by the vulva not the anus. 



IV. Personal-Notizen. 



Cagliari. — Der durch die Berufung des Professors Emery nach 

 Bologna erledigte Lehrstuhl der Zoologie und vergleichenden Anatomie ist 

 dem Professor Corrado P a r o n a (bisher Assistent am Laboratorium für ver- 

 gleichende Anatomie in Pavia) übertragen worden. 



Cambridge. — In consequence of the promotion of Mr. A. C. H ad- 

 do n to the Professorship of Zoology in the Royal College of Science and Art 

 at Dublin, the following appointments have been made : 



J. J. Lister, B. A., Exhibitioner of St. John's College, to be Demon- 

 strator of Comparative Anatomy. 

 A. H. Cooke, B. A., Fellow of King's College (First Classic, 1878), 

 to be Curator in Zoology. 



N e c r I g. 



Am 22. Januar starb in Frankfurt a. M. in seinem 74. Lebensjahre 

 Gabriel Koch, ein durch zahlreiche Arbeiten, besonders über geographische 

 "Verbreitung der Schmetterlinge, bekannter und geschätzter Entomolog. 



John Gould starb in London am 3. Februar (s. Z. A. No. 77, p. 120). 



Am 20. Februar starb in Putnam, London, Walter Philip Weston, 

 ein eifriger, äußerst tüchtiger Entomolog, in seinem 29. Jahre. 



Berichtigung. 



Bei der Correctur der No. 77 des Zoologischen Anzeigers ist aus Ver- 

 sehen die Anmerk. 3 auf p. 113, welche durch den auf p. 114 abgedruckten 

 Zusatz hinfällig wurde, stehen geblieben. Dieselbe ist daher zu streichen. 



Druck von Breitkopf und Härtel in Leipzig. 



