24 Verm. 
XV. VERMES. 
Variation and Anomalies. 
A specimen of Dodecaceria with a second tail (of 32 segments) growing 
out of the anterior region of the body, probably an instance of hetero- 
morphosis; M^snil & Caullery (1). — Specimen of Spiophanes with a 
half-segment replaced by a now head ; Michel (1) p. 385. — A Harmotho'e 
with an elytron-like structure replacing the ventral cirrus on one side in 
one of the posterior segments; Ehlers (1) p. 14. — An abnormal earth- 
worm; Lataste. 
Double-headed and double-tailed earthworms, produced artificially by 
grafting, either as a direct or an indirect consequence; Joest: produced 
artificially by partial longitudinal section in Planarians ; Randolph. 
Anomalies in segmentation of earthworms (produced artificially) ; 
Joest, Korschelt, Michel (1) p. 353: of leeches (not artificially pro- 
duced) ; Blanchard (4). 
Anomalies in maturation and fertilisation of ovum in Myzostoma 
glabrum ; Wheeler. 
Variations in process of development in the same species (poecilogony) 
in the Gordiidce ; Camerano (4). — Variations in mode of development 
from 6- hooked embryo to scolex, sometimes one, sometimes several 
scolices being formed, in Cysticercus T. microstomce ; v. Linstow, Arch, 
mikr. Anat. xlviii, p. 109. 
Physiology and Experimental Observations. 
Physiology of Oligochcetes and Branchiobdella , — reserve cells, ccelomic 
corpuscles, olood corpuscles, dorsal pores, phagocytosis and excretion ; 
Cu^not (1). — Physiology of Clepsinidce ; Kowalewsky. — Functions of 
neck-glands of Hirudo ; Apathy. — Excretion and phagocytosis in Ascaris ; 
Metalnikoff, Nassonow. 
Effects of extirpation of different parts of the central nervous system in 
Nereis , Lumbricus and Hirudo ; Steen-Maxwell. 
Experiments with transplantation of part of one earthworm to another ; 
Joest, Morgan. — Artificial section in Chsetopods and effects thereof; 
Michel (1, i— iii), Morgan, Hescheler, Korschelt, v. Wagner, Hepke: 
in Planarians; Randolph. 
Influence of heat and light on rate of cleavage in marine annelids; 
Mead: on reproduction of lost parts; Hescheler. — Rapidity of regenera- 
tion; Michel (1, iv), Morgan. 
Perception of light in earthworms, leeches, turbellarians, nemertines and 
trematodes; Hesse (1) and (2). — Behaviour of pigment-cells to light in 
Leeches; Johansson. 
Nature and properties of the pigments chcetopterin and bonellin\ Lan- 
kester : of thalassemm (a new pigment) ; Herdman. 
Medical and Economic Notes. 
Clinical uses of the secretion of the neck-glands of Hirudo ; ApAthy. 
Tumour in bladder due to Bilharzia eggs; Albaran & Bernard. 
Treatment of sheep infested with liver fluke ; Cobb. 
Trichinosis : its diagnosis by the kinds of white corpuscles in the blood ; 
Brown, T. R. : see also Askanazy and Cerfontaine (dispute on priority 
only), and Huber (drawing attention to older works on the subject). — 
Life-history of Trichina spiralis ; Graham, Reeker. 
Strongylosis in lambs; Julien: in hares in France; M^gnin. 
Significance of earthworms in agriculture; Holdefleiss. 
Harmfulness of Enchytraoids to beetroot ; Stoklasa. 
[See also p. 29.] 
