45 Verm. 
Subject Index. — Annelida, etc. 
1819 
L’accroissement et les phases sex- 
uelles et asexuelles de Salmacina 
dysteri Huxley ; Malaquin, 222. 
Methods of reproduction in the 
Syllids ; Potts, 294 (26 text-figs.). 
Regeneration. 
Autotomie et regeneration du corps 
et des eiytrcs chez les Polynoidiens 
(Halosydna gelatinosa et Lagisca ex - 
tenuata) ; constatation d’une disposition 
numerique complexe ; Michel, 238. 
Regeneration und Uebung. Versuche 
an Amphiglcna ; Schultz, 327. 
Die Regeneration isolierter Segmente 
und kleiner Stiicke von Wurmern ; 
Morgulis, 250. 
Spermatogenesis, Oogenesis, etc. 
Development of male and female 
eggs and the problem of sex-determina- 
tion in Dinophilus gyrociliatus ; 
Shearer, 344. 
The formation of the spermatophore 
in Arenicola and the theory of the 
alternation of generations in animals ; 
Downing, 75. 
Studies of fertilization in Nereis. 1. 
The cortical changes in the egg : 2. 
Partial fertilization ; Lillie, 208. 
Oogenesi di Tomopteris elegans ; 
Senna, 338. 
Development. 
Alcuni stadi di sviluppo di Coryno- 
cephalus albomaculatus{A Iciopina para- 
sitica) ; Granata, 134. 
Postembryonic development and 
larval forms of Nereis dumerilii ; 
Hempelmann, 155. 
Experiments on the control of 
asymmetry in the development of 
the Serpulid, Hydroides dianthus ; 
Zeleny, 399. 
Irregularites de la segmentation chez 
Protula ; Soulier, 359. 
Embryonale Entwickelung einer 
ncuen Gtenodrilusavt (Zeppelinia bran- 
chiata) ; Sokolow, 353 & 354. 
Larval Forms. 
The early larvae of Nephthys hom- 
bergi and Glycera convoluta ; Fuchs, 
103. 
Pelagic development of a littoral 
or benthonic Polychaete (family He- 
sionidac) ; progonotic (precociously 
sexual) larva of a Spionid ; Viguier, 
381. 
Pterobranchier ( Cephalodiscus ) und 
Bryozoen (Chilostomata), Vergleichung; 
Braem, 29. 
ETHOLOGY. 1819 
Habits, Behaviour, etc. 
Points in the bionomics of Oligo- 
chaetes (“ Helodrilus oculatus ” Hoffm. 
and other forms) ; Friend, 93. 
Biological observations on Oligo- 
chaetes of Neuchatel ; Piguet, 290. 
Growth, habits, etc. of Nereis du- 
merilii ; Hempelmann, 155. 
Habits of a phosphorescent Bermudan 
Annelid, Odontosyllis enopla Verrill ; 
Galloway & Welch, 111. 
Sur quelques particularitcs biolo- 
giques de la faune ann41idienne des 
mers antarctiques ; Gravier, 137. 
Luminosity. 
Leuchten von Henlea nasuta (Russ.); 
Suchoterin, 373. 
Plankton. 
Adriatische A c tino troc Zmlarven ; 
Stiasny, 368. 
In plankton, Bay of Algiers, new 
forms of Polychaetes ; Viguier, 381. 
Commensalism. 
Sur les Telphuses d’Algerie et leur 
commensal; Seurat, 343. 
Parasitism. 
Ectoparasitic on Trionyx triunguis, 
Placobdella aegyptiaca n. sp. ; Harding, 
152. 
Oviposition. 
Furthor experiments on the methods 
of egg-laying in Amphitritc ; Scott, 331. 
Parental Relations. 
On the brood-chambers for protec- 
tion of developing larvae in certain 
“ Annolides incubateurs ” {Par auto- 
