SPECIAL SUBJECTS. 
Gen. Suh. 33 
[Maupas, E.] Sur la conjugaison des Yorticellides. C.R. cvi, pp. 1607- 
1610. 
The varied origin of the small sized individuals in different species of 
Vorticellci and Carchesium ; the phenomena of conjugation ; in both 
large and small conjugates there are hermaphrodite (micro) nuclear 
elements with equivalent and complementary functions. 
°Mazzarelli, G. F. Sur I’influence du male dans la production de 
quelques anomalies on monstruosites. J. Microgr. xii, pp. 380-38*2, 
Meehan, T. Contributions to the Life-Histories of Plants. No. hi. 
P. Ac. Philad. 1888, pp. 391-393. 
Botanical, but of general import. “ Varying measures of heat influ- 
ence the separate sexes,— the smaller measure influencing the male, 
while the female still continues to rest.” Dichogamy thus arises. 
MObius, K. Das Flaschentierchen ( Folliculina ampulla). Biol. Central bl. 
vii, pp. 721-723. 
Tho peculiar budding process, in which the young form (like a Meta- 
zoon germ) remains until mature connected with the parent by a 
strand. 
^Nansen, F. Bergens Mus. Aarsber. for 1887 (1888), 34 pp.,2 pis. 
Myxine glutinosa is ordinarily a protandric hermaphrodite. Till tho 
body is about 32 cm. long it is a male, and after that it produces ova. In 
its reproductive relations, Myxine Eeems to be in a transition stage, still 
seeking the mo3t profitable mode. 
Plate, L. Studien fiber Protozoen. Zool. Jahrb. iii, 1, pp. 135-200, 
3 pis. 
On conjugation of Paramcecium , &c. 
Platner, G. [See Oogenesis.] 
Bogenhofer, A. Ueber die bisher beobachteten Fallo von Bastardir- 
ungen bei Schmetterlingen. SB. z.-b. Wien, xxxviii, 3, p. 73. 
Sbeliger, O. Die Enstehuug des Generationswechsels der Salpen. Jen. 
Z. Nat. xxii, pp. 399-414. 
*Strubell, A. Untersuchungen fiber den Bau und die Entwicklung der 
Rfiben - Nematoden, Ileterodera schachtii , Schmidt. Bibl. Zool. 
(Leuckart & Chun) ir. Cassel : folio, 52 pp , 2 pis. 
First larval forms are Nematode-like, free-living in the earth ; the 
second (also without sexual characters) become parasitic, sessile, and 
plump ; in this state the females remain, while the males become mobile. 
This curious history compared with that of EchinorhyncJtus, and paralleled 
with that of some Coccidce. 
Tichomiroff, A. Androgynie bei den Vogeln. Anat. Anz. iii, pp. 
221-228. 
Two opposing sex-forces in all unisexual animals, of which one in very 
variable degrees predominates. 
