HI8T0IKE DES HYDROÏDES 231 



1871. SCHULZE, F.-E. Ueber den Bau iind die Entwicklung von 

 Cordylophora lacustris (Allman), nebst Bermerkimgen liber 

 Vorkonimen iiiid Lebensweise dièses Thieres. Leipzig, 1871, 

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1871. Smith, S.-J. and Verrill, A.-E. Notice of the Inverte- 

 brata dredged in Lake superior in 1871 by the U. S. Lake 

 Surve}', under the direction of gen. C. B. Comstock, S.-J. 

 Smith, Naturalist. In : American. Joiirn. of Se. and Arts (3), 

 vol. 2, pp. 448-454. New-Haven, 1871, 8°. 



1871. Spagnolini, A. Catalogo degli Acalefi discofori del Golfo 

 diNapoli. In: AttiSoc. italiana Se. nat., vol. 14, pp. 144-223. 

 Milano. 1871, 8°. 



