440 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Nematohelminth.es. 



New Genus of Terrestrial Nematode.* — L. A. Jagerskiold describes 

 a small free-living terrestrial Nematode from Kerguelen, Bunonema 

 richtersi g. et sp. n. Along the ventral side of the body it bears two 

 parallel rows of relatively large wart-like bodies. The mouth is pro- 

 vided with bristles, is small, and may be absent. There are longitudinal 

 ridtres along the sides, and the cuticle between the warts is smooth or 

 coarsely granular. 



Notes on Nematodes.!— A. E. Shipley reports 1 5 Nematodes, mostly 

 species of Asearis, from fishes, seals, dolphins, etc., all from the museum 

 of University College, Dundee. 



Platyhelminthes . 



Bactericidal Action of Cestodes.J — L. Jammes and H. Mandoul 

 note that the extract of tapeworms has a bactericidal power, varying in 

 different species, and in relation to different microbes. The parasites 

 resemble the wall of the intestine in their absorptive capacity and in 

 their bactericidal power. This is an adaptation to intra-intestinal 

 parasitism. Sometimes the parasite may aid its host in the bactericidal 

 function. In Nematodes, where there is a continuous cuticle, there is 

 no bactericidal power. 



Notes on Cestodes.§ — A. E. Shipley has notes on the curious 

 twisted tapeworm Anthobothrium tortum v. Lins, from the stomach of 

 Phoca barbate. The edges of the animal are thickened, and the whole 

 is twisted or coiled round its longitudinal axis. The head bears firm 

 cushions and in the centre a maze of convoluted ridges. Two good 

 figures are given. Nine other forms are noted, all from the museum of 

 University College, Dundee. 



New Bird Tapeworm. || — M. Szymanski gives a description of 

 Hymeaolepis (Drepanidotienia) podicipina sp. n., from the crested grebe. 

 In the same host he found young forms of Tcenia furcifera Krabbe with- 

 out proglottides. 



Arctic Cestodes.f — F. Zschokke finds that in the far North the 

 Cestode fauna includes typically polar forms as well as cosmopolitan 

 types. The genera Dibothriocephalus and Tetrabothrius are examples of 

 the former, and to these may be added with some probability certain 

 species of the genera Diplogonoporus and Diplobothrivm. The wander- 

 ings of the hosts, viz. birds and fishes, introduce uncertainty in the cases 

 of other Cestodes occurring in the far North, as well as in some of those 

 quoted. In Mammals there occur Moniezia expansa, Taenia serrata, and 

 Tcenia camurus ; in Birds, Dilepis undulate, Fibriaria fascial art's, Dre- 

 pa/udotcenia filum, Anomotcenia microrhynchus, and many others ; and 



* Zool. Anzeig., xxviii. (1905) pp. 557-61. 

 t Proc. Cambridge Phil. Soc. xiii. (1905) pp. 95-102. 

 \ Comptes Rendua, cxl. (1905) pp. '271-3. 

 § Proc. Cambridge Phil. Soc., xiii. ' 1905) pp. 95-102 (2 figs.). 

 || Bull. Internat. Akad. Sci. Cmcovie, 1904, pp. 733-5 (1 pi.). 

 J Faunu Arctica, Bd. iii. (1903, pp. 1-32 (2 pis.). 



