BIOLOGY, DISTRIBUTION. 
Verm. 23 
Presence of Anchylostomum duodenale without secondary ansemia 
in niggers ; Zinn & Jacobi. 
Classification. 
Peculiar classification of “ Vermes,” the Nemathelminthes being 
referred to a group with ithe Arthropods, the rest supposed to form a 
series from Rotifers to Vertebrates ; Perrier (2) : of the Polychceta , 
the Aphroditidas , Syllidce, Tomopteridce , I'yphloscolicida ? , and Glycerulce , 
c.g ., all being referred to one suborder, whilst the Capitillidce have a sub- 
order to themselves, the Maldanidce and Opheliidce being placed with the 
Chlorhcemidce , &c., in another ; Beniiam (6) : of the Helminthes, the 
Gregarines being included amongst the Platyhelminthes ; Villot. 
The systematic position of Nerilla ; Pereyaslawzewa.— Classification 
■of Spionidcc ; Mesnil (1). — Contribution to the classification of the 
Lumbriddce ; Ribaucjourt, p. 88. 
Classification of the genus Bothriocephalus ; Ariola (2) : of Land- 
Planarians, according to the two kinds of eyes ; V. Graff (1) : of the 
genus A scar is according to the arrangement of jaws and lips ; Stossicii 
(1) : of the Gordiidc e ; ROmer : of the Clicetognatha ; Conant. 
Habits, &c. 
Self -amputation in Earthworms ; Hesciieler. — L iving Earthworms 
from ice : L. rubellus , Reeker : Dendrob. rubida ; Sekera (1). — Habits 
-of Xerobdella leconlci ; Penecke. 
Polymorphism in Gordius ; Villot. 
Egg-laying in Sagitta ; Conant (1). 
Destruction of Heterodera schachtii ; WlLLOT. 
• Parasites. 
In vascular system of Filigrana and Salmacina , Copepod embryos ; 
Malaquin : In special cavities, communicating with the exterior, inside 
Polydora , adult Copepods ; Giard : In Phyllodocidm , Gregarines ; 
Heavier, p. 307 : In Nerilla , a fungus ; Pereyaslawzewa : In coelomic 
fluid of Lumbricus , symbiotic bacteria ; Keng, Lim Boon : In Myzo- 
stoma , a new species of Amwba (A. myzoslomatis ) amongst the eggs and 
puncturing them ; W heeler, p. 25G : In Corallobothrium lobosum , cysts 
of a Cysticercus of a Tcenia ; IIiggenbacii (1). 
III. DISTRIBUTION. 
1.— GEOGRAPHICAL. 
( a ) Marine Forms. 
Identical species in Extra-Tropical regions of N. and S. hemispheres 
unknown hitherto within the Tropics, 5 Polych. and 2 Nemertines, p. 452; 
corresponding species in N. and S. Hem., 2 Polychsetes : ( Lumbriconereis 
Jcerguelensis and L. mardonis , Nereis eatoni and N. durnerilii), p. 455; 
Murray. 
