ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 465 



posed of a vertical rib, like that of the Tricliomonads, and of curved 

 and claviform little rods, disposed in a bundle round the anterior end of 

 the rib. Unlike LopJiomonas, this parasite (Joenia annectens) exhibits 

 no denser and darker tract in the anterior portion of the body. Pos- 

 teriorly the body is furnished with cilia-like processes, which were 

 never seen in motion, and which seemed to be direct processes of the 

 ectoplasm. The protozoon was fed with wood-crumbs, and anterior 

 pseudopodia-like processes (possibly abnormal) were observed. Prof. 

 Grassi discusses similar parasites described by Leidy, and would 

 unite one of these, Trichonympha agilis, with his Lophomonadidea, 

 under the name L. trichonympha. He places the Lophomonadidea 

 among the flagellates, beside the Trichomonads, Magosphseras, Sinura), 

 and perhaps Mallomonads. 



Amyloid Granules of Gregarinida* — M. E. Maupas has found 

 amyloid granules in the cytosome of all Gregarinids he has examined ; 

 they vary considerably in size, from 1 /* to 20 /x. ; they are oval, 

 spherical, discoid, or irregular in form, and yet in every species of 

 Gregarine (and of Infusorian) there is a characteristic and specific 

 form ; indeed, in the case of difficult species, they will furnish an 

 excellent criterion. Among the large granules some are often found 

 in which the mass is differeutiated into concentric layers, similar to 

 those of vegetable starch ; and like them, they present, with j)olarized 

 light, a polarization-cross ; this, with direct solar rays on the mirror 

 of the Microscope, can be seen even in granules 2 /jl long. The 

 author gives an account of the chemical tests which he has applied, 

 and comes to the conclusion that the granules are composed of a body 

 which resembles starch rather than glycogen ; and he proposes to 

 replace the term of paraglycogen proposed by Biitschli for that of 

 zoo-amylum ; from the chemical point of view the body is interest- 

 ing as affording us an amyloid substance which reduces mixtures of 

 copper and potash without there being any suspicion of an admixture 

 of glucose ; from the view of general cellular physiology their mode 

 of formation is no less interesting, for they arise in the midst of a 

 protoplasmic mass without the intermediation of any special organs, 

 comparable to the amyloplasts of plants. 



* Comptes Rendus, cii. (1886) pp. 120-3, 



