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me 
33. M. M. KOWALEWSKI. Studya helmintologiczne, cze$sé VIII. O nowym 
tasiemcu: Tatria beremis, gen. nov., sp. nov. (Helmithological Stu- 
dies, part VIII On a new tapeworm: Tatria biremis, gen. 
nov., SP. NOV.) (Études helminthologiques VIIL Sur un nouveau ténia: 
Tatria beremis gen. nov., sp. nov. Mémoire présenté par M. L. Kulezyiski m. e, 
(Planches IX, X.) 
The author describes in this paper a new representant of the 
subfamily Acoleïnae Fuhrm., found by him in the intestine of a 
Podiceps auritus in Dublany (Galieia; Mai, 1903). Of the four ge- 
nera, belonging to this group of tapeworms (4, p. 376), the genus 
Acoleus Fuhrm. bears the most resemblance to the tapeworm, men- 
tioned above. Such difference however’ as absence of the lateral 
appendages of the proglottides, a great number (40—130) of testi- 
eles and in the first place the absence of a vaginal canal of the 
receptaculum seminis etc. in Acoleus does not allow to place the 
worm in question in this genus, wherefore the author proposes for 
it a new genus: Tatria An aceurate and critical analysis of the 
descriptions of two other tapeworms very similar to the tapeworm 
found by the author, namely Taenia acanthorhyncha Wedl 1855 
and Taenia scolopendra Diesing 1856, and especially of the dra- 
wings adjoined to them in the papers of Wedl (8, p. 18, Tab. II, 
Fig. 19—22), Diesing (2, p. 35, Tab. VI, Fig. 22—27) and Krabbe 
(6, p. 504, Tab. VIII, Fig. 170—171) shows. that both the forms 
also must belong to the same genus. There is the diagnosis of this 
genus given by the author: 
Tatria gen. nov. Proglottides with lateral appendages (Fig. 1, 2). 
Rostellum armed on its apex with a erown of few larger hooks 
and on its surface with many rings of little hooks. Genital organs 
single. Testieles not numerous (7?). Two seminal vesicles. Male 
genital opening regularly alternate (Fig. 1, 2, 7, 8, 9, 10). Recepta- 
eulum seminis in the middle axis of the proglottis (Fig. 9, 10, 12). 
Exterior end of its vaginal canal enters into the next posterior 
proglottis and joins there with receptaculum seminis of this pro- 
glottis (Fig. 9), forming in this manner a way for passing sperma- 
1) C'est probable que l’eEpaisseur de la parois et la forme du vaisseau serout 
indifferantes, jusqu’a une certaine limite. 
