20 Verm. 
xv. VERMES. 
comparison with those of Leeches ; Voinov. — Nephridia of Clepsine ; 
Grae (1). — Internal termination of nephridia in Leeches ; Bolsius (2). 
Excretory system of different Cestodes ; Braun (3) p. 1353 ; Pintner 
(2) : of the different species of Ichthyotamia and of Corail obothrium ;> 
Riggenbach (1) : of the embryo of Distomum ; Coe. — Dorsal excretory 
pore in a Trematode ; Looss (2). 
Nervous System. 
Nerve-cords far apart and in ectoderm in Nerilla ; Pereyaslawzewa : 
far apart between the ganglia and very close to the epidermis in Phyllo- 
docidce ; Gravier. — Anatomy, morphology, and histology of cerebral 
ganglion in Amphinomida j, Palmy rida Lycoridce y and Maldanidai ; 
Racovitza. — Functions of cerebral and suboesophageal ganglia in Nereis , 
Lumbricus, and Hinulo ; Maxwell. — Nervous system of Dero ; Brode : 
of Aeolosoma (presence of ladder-like ventral cord) ; Brace. 
Ganglia of ventral nerve cord of Leeches ; Simon & Tiiiry. — Cells of 
sympathetic ganglia with definitely arranged networks in protoplasm of 
cell in Leeches ; Simon. 
Nervous system of Cestodes ; Braun (3) p. 1275 : of 2 species of 
Monieza (posterior, anterior lateral, and two pairs commissural ganglia in 
each proglottid) ; Tower : of Ichthyotcenia ; Riggenbacii : of Ligula 
(band of longitudinal nerves between inner and outer muscular layers 
connected with main lateral nerves by commissures) ; Luhe (2), see also 
Braun (3) p. 1279. 
Neurochord cells in ventral lobes of cerebral ganglion and at intervals, 
dorsally and ventrally (but asymetrically), down the lateral cords in a 
Cerebratulus ; Montgomery (1). — Nervous system of fresh-water Dendro- 
coels, and terminations of nerves in muscles of pharynx ; Monti. 
Visceral nervous system in Ascaris ; Looss (1). 
Sense Organs, 
Special epidermis cells serving for the perception of light in the 
Lumbricidce y comparison with eyes of Leeches; Hesse. — Disposition and 
structure of the three pairs of eyes in Acanthobdella ; Kowalevsky, A. 
(1). — Relation of Platy helminth to Hirudinean eyes : structure of those 
of Turbellaria • Janichen. — Provisional eyes in Spio larvae ; H^ecker. 
Otocysts in a Maldanid ( Clymenides sulfureus , Clp.) ; M^snil (2). 
Nuchal organ of Polychaetes, histological structure thereof in Chryso- 
petalum and Clymene ; Racovitza, 
Lateral line organs in Acanthobdella ; Kowalevsky, A. (1). 
Genital System. 
In Nerilla , the 9 with rudimentary £ organs, eggs apparently lying 
directly on the intestinal epithelium, and passing out through the ali- 
mentary canal ; Pereyaslawzewa. — Gonads of Arenicola ; Kyle. — 
Development of Gonads and sexual phases in Myzostoma , eggs with 
accessory cells (as in certain Polychaetes and Gepliyreans, Leeches and many 
Crustaceans) ; W heeler. — Compound nuclei in eggs of certain Polychaetes ; 
Michel (1). — The origin of egg centrosomes in Chwtopterus ; Meah. 
A Lumbriculid with asymmetrical arrangement of spermathecae and 
sperm-ducts ; Smith. 
Histology of testes and sperm-cells in the Earthworm, (not agreeing 
