iJ68 Aliscdlaiieous. 



broke up into the individual joints. At last only the two oral 

 disks remained. 



The pinnules, when fished out, were in part filled with semen or 

 covered with adherent ova in the Blast ala-st-ei^e, so as to confirm 

 the probable supposition that this entwining of the two individuals 

 might be a process of fertilization. 



The ova passed in the aquarium through a normal development 

 as far as the FeniacrinifS-stage. The two armless Comatuhi-calyces 

 continued for gome days to live in the aquarium, and were then, 

 killed for histological investigation. 



This observation seems to support Studer's* supposition that, at 

 least in many cases, the separation of the arms of many Asterida 

 stands connected with the evacuatioa of the sexual products. — 

 Zoologisclier Anzciger, no. 174, August 18, 1884, p. 448. 



On the Onjanization o/Anchinia. By M. IS". Wagner. 



Last winter I found at Naples in great abundance a phase of 

 development of Anchinia rubra different from that described by 

 Vogt, Kowalewsky, Borrois, and Corrotsyeff. As regards its general 

 appearance, this pliase is charactei'ized by a regularly globular form 

 of body, and, further, it did not possess that long caudal appendage 

 which characterizes ihe form hitherto known. 



This phase was agamic. Twice I met with individuals with a 

 small stolon covered with buds ; but this stolon diftered essentially 

 from that of the sexual form. 



Ihe nervous system of this jihase presents two pairs of very strong 

 nerves, which run towai'ds the anterior and posterior apertures of 

 the body, and to them I give the name of anttrior and j^osterior 

 nerves. These nerves are analogous to the nerves of DoUolum and 

 Ascidia. 



Besides these nerves the ganglion gives origin, at its posterior 

 part, to the epitheJial nerves, which terminate in the cells of the 

 external and internal epithelium of the body ; to a neiTe running 

 towards the olfactory organ (the issue of the hypophysary gland) ; 

 and to a pneumoriastric nerve, which ramifies in the endostyle, the 

 vibratile bands, and the branchias. In its upper part the ganglion 

 also gives off' the nerves running towards the surface of the body. 

 The two sides of the ganglion give origin to the nerves terminating 

 in the epithelial cells. Lastly, the posterior part of the ganglion 

 presents, besides the jjostei^or nerves, the cloacal nerves and the 

 nerves running to the vibratile sac, that is to say towards the sac 

 in which the posterior extremities of the vibratile bands terminate. 

 The termination of the nerves is excessively varied, which gives 

 reason to suppose that the specialization of the organs here reaches 

 a very high degree. 



* Mouatsbericht der Berlin. Akad. Ifc^rG. 



