Zoology. 1125 
Rupert Valentin records the presence (Zool. Anz., 292) often in 
comparatively large numbers of psorosperm masses in ' the tissues of 
two species of SEENA In each mass the spores were in various 
stages of developmen 
Franz Leydig ier calls attention to the fact that in 1860 he 
described parasites in the blood of Daphnia, Lyncius and Cyclops, 
and complains that he also called attention in his Natural History 
of the Daphnide to their existence in the blood and other tissues of 
sick silkworms, a fact which has been overlooked by all subsequent. 
students of the diseases of the silkworm 
Dr. Stokes describes a number of North American Flagellata in 
Jour., of the Royal Microscopical Society for October. The forms 
are Mastigameba flexuosa, Cercomonas truncata, C. heterofilum, C. 
ge C. undulans, C. mutabilis, Heteromita granulifera, H. tremula, 
stagnalis, H. sphagni, H. nasuta, H. parvifilum, Tetramitus 
ee Hexamita truncata, Atractonema pusilla, Hymenomonas 
Jlawa, H. fusiformis, Zygoselmis obovata, Stereomonas parvula, 
Anisonema obliqua, Hymenona (nov. gen.), sphagni, and Petalo- 
monas orbicularis. There is no definite locality assigned to any of 
the species, 
r. C, D. Sherborn has recently published in London a volume 
of 152 pages, devoted exclusively to a bibliography of the Forami- 
nifera, recent and fossil. 
Sponees.— Wierzijski ( Verhandl. k. k. zool-bot. Gesellsch., 
1888) thinks that all the so-called species of Euspongilla ‘are but 
one in reality, the differences being the result of environment. He 
also found near Lunberg a sponge which he regarded as closely 
allied to Potts Spongilla terrenove, but afterward concluded that 
both his form and the Newfoundland species were deformed indi- 
viduals of Myenia miilleri. 
Ca:LENTERATEs.— Vogt thinks that Arachnactis is not, as the 
younger Agassiz thought, the young of the Edwardsia but a dis- 
tinct genus allied to Cerianthus and like the latter retaining its 
distinctly bilateral character throughout life. Though he does not 
expressly say so, Vogt is apparently ready to adopt the view that in 
the Hydrozoa as in the Anthozoa the free-swimming form is the 
primary and the attached condition secondary and adaptive. 
Worms.—O. Zacharias records (Biol. Centralblatt, VIII., p. 542) 
the occurrence of a land planarian (Geodesmus terrestris) between 
the A met cob the mushroom (Agaricus deliciosus). 
oy ago we referred to the account given by Dr. 
Walker of f Bufalo, concerning the life history of the tape worm of 
