SPECIAL SUBJECTS. 
Gen. Sub. 27 
Whitman, C. 0. Spermatophores as a Means of Hypodermic Impreg- 
nation. J. Morph, iv, pp. 361-406, 1 pi. 
( 4 ) Sex and Reproduction. 
Bateson, W. On some Cases of Abnormal Repetition of Parts in 
Animals. P. Z. S. iii, pp. 579-588, 4 cuts. 
Bonnier, J. Le Dimorphisme des Males chez les Crustaces Amphipodes. 
C.R. cxi, pp. 987-989. 
Bosciietti, F. [See Evolution.] 
Boulenger, G. A. Note on the Secondary Sexual Characters in the 
South- African Tortoises of the Genus Homopus. P. Z. S. lxxviii, 
p. 521. 
Canu, E. Sur le Dimorphisme Sexuel des Cop6podes Ascidicoles. C.R. 
cxi, pp. 757-759. 
Contejean, Cii. Sur l’Autotomie chez la Sauterelle et le Lezard. T. c. 
pp. 611-614. 
Cunningham, J. T. On Secondary Sexual Characters in the Genus 
Arnoglossus. P. Z. S. lxxviii, pp. 540-546. 
°Daday, E. von. Ein interessanter Fall der Heterogenesis bei den 
Raderthieren. Ber. Math. Nat. Ungarn, vii, pp. 140-156, 1 pi. 
In Asplanchna sieboldii the fertilised ova with thick membranes develop 
into tubular parthenogenetic females, which give rise to tubular and 
male-like females and to males. The tubular females, after copulation 
with males, lay fertilised ova with thick membranes. The male-like 
females give rise parthenogenetically to other male-like females, to 
tubular females, and to males. After copulating with the last, they lay 
fertilised ova. The heterogenesis is thus very complex. 
Harmer, S. F. On the Regeneration of Lost Parts in Polyzoa. Rep. 
Brit. Ass. (1890), pp. 862 & 863. 
Hartert, E. Ueber Oologie und ihre Bedeutung fur die Wissenschaft. 
Ber. Senck. Ges. (1890), pp. 37-49. 
Heape, W. Preliminary Note on the Transplantation and Growth of 
Mammalian Ova within a Uterine Foster-Mother. P. R. Soc. xlviii, 
pp. 457 & 458. 
It is possible to make use of the uterus of one variety of rabbit as a 
medium for the growth and cojnplete foetal development of fertilised ova 
of another variety of rabbit. 
Hertwig. [See Oogenesis.] Jen. Z. Nat. xxiv, pp. 268-313, 3 pis. 
Confirming Greeff’s observation that the ova of starfishes ( Asterias 
