ZOOLOGY AND BOTANY, MICROSCOPY. ETC. 073 



Motility of the Echinococcus Scolex.* — J. Sabrazes, L. Muratel, 

 and P. Husnot have tried to throw some light on the secondary meta- 

 morphosis which occurs when a cyst of Echinococcus is ruptured. They 

 have found that minute scolices in a drop of the fluid at a temperature 

 of 31° C. exhibit considerable though slow motility. It seems not un- 

 likely that they can migrate actively in the tissues of the infected subject 

 if they are liberated from the cyst. 



Mammalian Cestodes.f — C. v. Janicki has examined 28 species, 

 chiefly from the collections of the Berlin and Vienna Museums. Sixteen 

 of the species are described as new. From Didelphidge there is a new 

 form of the genus Linstowia Schokke, occurring exclusively in apla- 

 cental mammals. Representatives of the old genus Oochoristica Liihe 

 are met with in two species (one of which is new) for the first time in 

 Marsupials. Previous accounts of other forms are added to with refer- 

 ence to several structural points, and new species are described. 



Polyonchobothrium polypteri Leydig.J — B. Klaptocz re-describes 

 this species. It is one of the Bothriocephalidaa — Lube's sub-family 

 Ptychobothriinte. Its most noteworthy peculiarity is that it is the only 

 species in this group possessing hooks. They occur upon the lobes of 

 the scolex in its distill and most mobile region. An amended diagnosis 

 of the genus Polyonchobothrium Diesing, is given. 



Schistosoma japonicum in the Philippines.§ — P. G. Woolley has 

 found in lesions of the lungs, liver, and bowel of a Filipino, ova which 

 agree in shape, size, and colour with those of Schistosoma japonicum vel 

 cattoi. It seems, then, that this blood-fluke occurs not only in China 

 and Japan, but also in the Philippine Islands. 



Studies on Turbellaria.|| — W. A. Haswell describes ffeterochosrus 

 australis g. et sp. n., an "accelous" Turbellarian with some peculiari- 

 ties — e.g. the absence of a "frontal organ." The sub-ordinal name 

 Acoela is not strictly applicable, since an enteric cavity, of a sort, is 

 present. The reproductive apparatus is entirely absent during the 

 winter. There are symbiotic algae with distinct cell-walls. 



The author also describes Anomalocmlus ccecus, a new type of Rhab- 

 doccele, outside the limits of all the known families. The arrangement 

 of the male ducts (with the vesicula seminalis and prostate reservoir both 

 inclosed in the penis sheath) is very exceptional, occurring elsewhere 

 only in the Vorticida, from all of which the new form is distinguished 

 by having diffuse or follicular testes, and by having a pharynx rosulatus 

 instead of a pharynx doliiformis. There is one reproductive aperture 

 and a single ovary ; the uterus is combined with the genital atrium ; 

 there are reticulate vitelline glands ; the penis is armed with numerous 

 chitinous teeth ; the intestine is devoid of a definite layer of epithelium. 



* Comptes Rendus, cxlii. (1906) pp. 1353-5. 



t Zeitschr. wiss. Zool., lxxxi. (1906) pp. 505-97 (6 pis. and 15 figs.). 



J Centralbl. Bakt. Parasitenk., xli. (1906) pp. 527-36. 



§ Philippine Journ. Sci., i. (1906) pp. 83-9 (3 pis.). 



jj Quart. Journ. Micr. Sci., xlix. (1905) pp. 425-67 (3 pis.). 



