BIOLOGY. 
Prot. 33 
Notes on the anatomy of Sarcosporidia of mice, Koch (177). [See II. 
d. 1 .]—Sarcocystis muris, account of, especially growth and formation of 
“sporozoites,” Smith (367). 
Joyeuxella toxoides , a new Sporozoan, general description, Brasil (42). 
The parasite is crescentic with a large vesicular nucleus, and one or two 
“ micronuclei ”. Both karyosome and “ micronuclei ” divide up until the 
distinction between them is lost. The cytoplasm arranges itself around 
the resulting pieces, but the further development is unknown. 
General description of Polycaryum branchiopodianum, n. g., n. sp., from 
Branchipus. Youngest forms seen possessed many nuclei, and centrally 
several large retractile vacuoles containing a fatty substance. Organisms 
practically non-motile, form sculptured cysts of a chitinoid nature ; 
reproduction not seen, Stempell (378). 
An intracellular parasite (Chitonicium simplex) found in the mantle- 
cavity of different Chitons, possesses a large nucleus, sometimes contain¬ 
ing a rod-shaped body which Plate (292) takes to be an albumen crystal. 
Mastigophora :—Crapulo intrudens ,. n. g., n. sp., colourless, highly 
metabolic, with two paired flagella, and an oval funnel: it multiplies by 
longitudinal fission and forms colonial cysts, Miehe (261). 
Description of a new Flagellate, appearing in two forms, one of which is 
not unlike a Trypanosome, and with flagellum and centrosome near the 
nucleus ; from the gut of Anopheles . Leger (213) terms it Crithidia 
fasciculata .—Morphology of Dinobryon Ehrbg., Lemmermann (221). 
Two forms of Herpetomonas jaculum , n. sp., occur in mid-gut of Nepa. 
One is the ordinary monadiform kind, in which Leger (212) is inclined to 
see a delicate digestive tube, starting from an anterior “ buccal vacuole.” 
The other is a gregariniform kind, which has lost most of its flagellum, 
and the remainder serves as an organ of attachment to the epithelial cells 
(analogous with the tactile rostrum of certain Gregarines).—General ac¬ 
count of Megastoma entericum (Grassi), which possesses a long vibratile 
tail, 4 pairs of flagella, a nucleus divided into 2 halves, connected by a 
“ central body,” and another body of varying form and uncertain function, 
Metzner (258).—“ Double ” nature of the cell in Trepomonas agilis, with 
duplicated flagella, “mouth” and nucleus. Dangeard (80) is uncertain 
whether the condition results from a primitive division, or from incom¬ 
plete fusion of two individuals, but considers that it is transmitted to 
succeeding generations. He compares it to the condition in Amoeba 
binucleata .—Description of Trichomonas hominis , n. var. ?, Prowazek (304). 
Morphology of: Trypanosomes of Fishes (including Trypanoplasma , 
a biflagellate Trypanosome), Laveran & Mesnil (196); Trypanosoma 
brucei, occurrence of “plasmodial” and “amoeboid” stages, Bradford 
& Plimmer (40); Laveran & Mesnil (197), however, believe that these 
plasmodial forms, and the flagellate amcebulie arising from them, are only 
involution phases appearing in unfavourable conditions, which they term 
“ agglomeration ” and “ agglutination ” forms. 
Morphological distinctions between : T. brucei (Nagana), and T. equinum 
(= T. equina) (Mai de Caderas), Laveran & Mesnil (203); T. brucei and 
T. leivisi, Bradford & Plimmer (40); and T. theileri and T. transvaaliense , 
n. sp., Laveran (190). — T. theileri , n. sp., the largest known species, Bruce 
(46) ; T. gambiense n. sp., the smallest, Dutton (94 a). 
Account of: T. equina , n. sp., Voges (403); T. leivisi of sewer-rats, bio¬ 
logically treated, Jurgens (174); a Trypanosome from Anguilla vulgaris 
[probably T. granulosum Lav. & Mes.], Sabrazes & Muratet (327). 
Description of a new sp. of Peridinium , distinguished by the absence of 
chromatophores and also of stigma, occurring in brackish w T ater, Levander 
(225); P. alatum , n. sp., characterized by three stiff transparent mem¬ 
branous wfings, Garbini (135). 
General account of the Silicoflagellata, Lemmermann (222). 
