249 



betrieben werden, wenn neben den hochwichtigen Golgi'schen 

 und Ehrlich' sehen technischen Methoden auch die Tinctionstechnik, 

 die Osmiumsäurebräunung mit und ohne Verwendung von Holzessig 

 und die Weigert 'sehe Methode in Anwendung gelangt. Die Phylo- 

 genie und die Histophylogenie müssen in den Vordergrund gestellt 

 werden. Daß ferner die morphologische Forschung durch das mit der 

 nöthigen Kritik angewandte Experiment unterstützt wird, ist ein- 

 leuchtend. 



Heidelberg im März 1896. 



3. Notice of New Hexactinellida from Sagami Bay. 



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



eingeg. 20. März 1S96. 

 Semperella stornata n. sp. 



Closely allied to S. cucumis F. E. S.^, resembling that species in 

 general shape and structure, in the irregular distribution of rounded 

 efferent openings, in the disposition of macrosclerae , in the nature of 

 uncinates and of prickly oxypentacts in the septal wall, in the form 

 of the terminal anchors of basal spicules , etc. However the present 

 species is distinguishable by the following characters : 



Paratangential rays of hypodermal pentacts always comparatively 

 long, terminating in sharp points. 



Distal ray of dermal pinules (length 0.1 — 0.18 mm, those at the 

 oscular margin reaching 0.3 mm) club-shaped, the spines near the 

 free end being comparatively long and closely surrounding a central 

 cone, whose apex is exceeded by or but slightly projected beyond, the 

 last whorl of spines. Basal cross as in S. cucumis. 



Macramphidiscs up to 0.42 mm in length and 0.18 mm breadth; 

 the S-ray ed umbel truncated and fez-shaped. Mesamphidisc not found. 

 Micramphidiscs abundant, 0.022 — 0,088 mm long; their umbel elon- 

 gated rather than hemispherical. 



Instead of spindle-shaped oxydiacts with prickly ends (Schulze, 

 loc. cit., PI. IX figs. 14 — 16) there occur in the septal wall uncinate- 

 like amphioxes with one end rather abruptly pointed and the other 

 gradually attenuated (up to 0.67 mm in length and 0.03 mm in breadth). 

 They are barbed except near the thinner end, the barbs being all 

 turned towards the thicker end. 



Several specimens were obtained at different parts of Sagami Bay. 

 The largest specimen before me measures 250 mm in length and 

 47 mm in breadth of body. 



1 »Hexactinelliden des Indischen Oceanes«. I. Abh. K. Preuß. Acad. d. Wiss. 

 1894. 



