Zoologischer Anzeiger 



herausgegeben 



von Prof. J. Victor CarUS in Leipzig. 



Zugleich 



Organ der Deutschen Zoologischen Gesellschaft. 



Verlag von Wilhelm Engelmann in Leipzig. 



XVII. Jahrg. 



22. October 1894. 



m, 459. 



Inhalt: I, Wissenschaftliche Mittheilaugen. 1. Ijima, Notice of New Hexactinellida from 

 Sagami Bay. I. 2. Ostroumoff, Ein fliegender Copepode. 3. Piersig, Hydrachnologische Bericli- 

 tigungen. 4. Stingelin, Über zwei neue Daphnien aus dem schweizerischen Hochgebirge. II. Mit- 

 theil, aus Mnseen, Institnten etc. Linnean Society of New South Wales. III. Personal-Notizen. 

 Vacat. Litteratur. p. 377 — 400. 



I. Wissenschaftliche Mittlieilungen. 



1. Notice of New Hexactinellida from Sagami Bay. I. 



Dr. I. Ijima, Sei. Coll., Imp. Univ., Tokyo. 



eingeg. 15. August 1894. 



Recent collections made of deep-sea animals in Sagami Bay 

 brought to light a number of new , and in many cases truly magnifi- 

 cent, forms of Hexactinellida. These shall be here briefly noticed, 

 reserving the details to a monograph now in course of preparation. 

 For the present I proceed in the order I have studied them. 



Euplectella imperialis sp. nov. 

 This species comes nearest to E. asperyillum or E. Oweni. In the 

 very young state it is spindle-shaped , truncated above and showing 

 no or only a suggestion of a bending after the manner of E. asper- 

 gillum. In all larger specimens, the horn-like curvature of the body is 

 manifest. In these also , the body is broadest at the middle, except in 

 very old and consequently very large individuals, which present a 

 form broadest at the upper end. In cross-section, the body is nor- 

 mally always circular. Dimensions of a few specimens: 



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