Polytlialamian from Transylvania. 351 



dant in fresh waters, are entirely wanting in the salt-pool as 

 in the sea''^. 



The following pages are intended to furnish a further con- 

 tribution to the knowledge of the Rhizopoda of the saline 

 inland waters, and further to establish the proposition that the 

 Protozoan fauna of these loaters iJi'esents remarkable agree- 

 ments with the marine fanna. 



Having been occupied for some years with the study of the 

 Crustacea of Transylvania, I made collections in August of 

 last year in the salt-pools near Deva (in the south-western 

 angle of Transylvania). On examining the results of my 

 collections preserved in alcohol, I found, to my great asto- 

 nishment, among the Copepoda, a great number of empty 

 shells of a Polythalamian, which at once engrossed all my 

 attention. In order to convince myself that the empty shells 

 were derived from a still living Polythalamian, I repeatedly 

 had sent to me in the course of this summer water i'roni the 

 above-mentioned salt-pools, and in this the shells constantly 

 occurred, among the filaments of Algai, in the mud, and float- 

 ing at the surface. Unfortunately the shells were generally 

 empty, only a few of them containing the protoplasmic body 

 in some chambers, and T was unable to observe the interesting 

 Polythalamian (probably the first representative of the whole 

 order not living in ihe sea) in a state of vital activity. 



According to the literature on living and fossil Polythala- 

 mia accessible to me, the Polythalamian of the salt-pools at 

 Ddva represents a new genus, which I shall name Ent~ia, in 

 honour of my esteemed teacher. 



The characters of the genus may be summarized as fol- 

 lows : — 



The many-chambered chitinous shell is not perforated and 

 contains imbedded siliceous lamella? in great abundance. 

 The spirally arranged chambers together form a shell wound 

 from right to left, like the shell of a flat Helix. The cham- 

 bers are entirely visible only from the convex side ; on the 

 concave side they cover one another, so that on the aj)ical 

 surface all the chambers are visible, but on the basal surface 

 only those of th _■ last wlund. On the outer partition of the 

 last chamber there are two large, oval, tubularly produced 

 apertures and two smaller circular ones, and these are re- 

 peated upon all the septa. 



Species : — Entzia tetrastomella, with the characters of the 

 genus. 



* Naturb. Ilefte, Bd. i. Heft 4, p. 199. 



27* 



