520 



There is however, a striking similarity in the spores of this form 

 and of those of Serumsporidium as described by Pfeiffer (1895) 4 . 

 Serumsporidium is a parasite infesting the body cavities of fresh water 

 Entomostraca, filling them up until they resemble the testis of an 

 infested Brook Trout. The spore-forming individuals are somewhat 

 similar to the parasites described by Thélohan and Henneguy 

 (1892) 5 in the Crayfish, the spores of which measure only 2 or 3 f.i. 

 Although the life history of these forms is not fully known I venture 

 to place the present parasite with them under the generic name 

 Lymphosporidium; and from the habitat it gets the specific name 

 L. truttae. 



Two very important points in connection with the epidemic have 

 not been touched upon. These are 1) the origin of the disease, and 

 2) the remedy. On neither point can I throw any light. The parasite 

 may be present in small numbers in the Brook Trout at all times, be- 

 coming epidemic only under unfavourable circumstances. Or it is pos- 

 sible that like the Malaria germ its normal habitat may be in some 

 other and lower form of life than the trout. This question can be 

 settled only by careful examination of many normal individuals, and 

 may never be settled. The second point is no nearer settlement, for 

 all of the fish in the hatchery died before the cause of the epidemic was 

 discovered, and there was no time for experiment. I hope that some- 

 time in the near future both points may be satisfactorily determined. 



June 1900. 



2. Zwei neue Myriopoden aus dem Mittelmeergebiete. 



Von Director Dr. R. Latz el in Klagenfurt. 

 (Mit 1 Figur.) 



eingeg. 11. August 1900. 



Unter einer größeren Menge von Myriopoden, welche Prof. 

 Dr. Oskar Schneider (Blasewitz) in den letzten beiden Frühjahren 

 bei San Remo, Bordighera und Ajaccio gesammelt hat, fanden sich die 

 folgenden neuen Arten. Die Veröffentlichung der ganzen Ausbeute 

 soll in einem Nachtrage zu Schneider's Arbeit »San Remo und 

 seine Thierwelt im Winter« in den Jahresberichten der Isis in Dres- 

 den erfolgen. 



4 L. Pfeiffer, Die Protozoen als Krankheitserreger. Suppl. IS 



5 C. R. Soc. Biol. V. 44. 



