BIOLOGICAL. 
Verm. 27 
Other cases of asymmetry : in eyes of Leeches ; Blanchard (22) : 
in gonads of Oligochaets ; Woodward (267) : in branchiae of a Chloeia , 
and tentacular cirri of a Eunice ; Buchanan, (63) p. 175. 
Bifurcation : of posterior portion of a Lumbriculus ; Cori (73) : of 
Dasychone ; Buchanan (53); of a primary branchial ray of a Branchi - 
omma ; Lo Bianco (152). Double Taenias, resulting intriradiate forms ; 
Barrois (6), Kuchel (138). Bifurcate (or trifurcate) specimens of T. 
saginata ; Ahlborn (1): of Chapmannia tauricollis ; Monticelli 
(170). 
Supernumerary gonads in Oligochaets ; Woodward (267). A super- 
numerary cirrus on one side in a Eunice , and branchiae in a Chloeia ; 
Buchanan, (51) p. 175. 
Yariation in number: of anal appendages in Polydora ; Mesnil (168). 
Individual variation in number of eyes of Nephelis ; Blanchard (24 xv): 
of hooks in Tcenia solium , and their absence in individuals of Hymenolepis 
acuta ; Parona& Perugia (190 ii). 
Colour: in Taenias, the cause of the black colour; Nabias (181). 
Black pigment in a Distomum ; BilLet (19). Colour variation and 
its significance in Nemertines; Riches (206) : in Cycloporus papillosus ; 
Gamble (93) : in Geoplana flekheri ; Dendy (78). 
Variations in form : of Bilharzia embryos ; Brock (47) ; of copulatory 
organ of Promesostoma ; Gamble (93). 
Individual variations : in different species of Tetrastemma ; Verrill 
( 247), and Riches (206) : in Eunice philocorallia , n. sp.; Buchanan (53). 
1G. Physiology. 
Absorption and excretion in Syllids ; Malaquin (161). Chloragogene 
of Ophelia ; Schaeppi (217). Function of Clitellum of Lumhricus ; 
Cole (70). 
Physiology of Bilharzia ; Brock (47). 
17. Habits. 
The two species of Polydora living on Oysters ; Carazzi (62) : 
Polychaets of the Schleswig Holstein Oyster banks ; MObius (169). 
On the homes and tubes of marine Annelids ; McIntosh (160). Habits, 
colouring, and tubes of tubicolous Annelids of Gulf of Naples ; Lo 
Bianco (152). Eunice inhabiting Lophohelia ; Buchanan (53), Maren- 
zeller (165). Ctenodrilus in Holothurians ; Monticelli (171). Leech- 
like parasites in American Cray-fish ; Moore, J. P. (176). Phos- 
phorescent Earthworms of Berlin ; Matzdorf (166). Habits of Earth- 
worms ; Rosa (207), Smith (223). Prevention of blood coagulation 
by Leeches ; Croockewit (74). Tracks made by Clepsine in sand ; 
Weltner (256). 
Longevity of adult Bilharzia ; Moty (177). Habits of British Nemer- 
tines, and their relations to their surroundings ; Riches (206). Mode of 
