Araclin. 1 
ARACHNIDA. 
BY 
The Eev. 0. P. Cambridge, M.A., O.M.Z.S, 
List op Publications. 
Aussetier, Anton. Analyfcische Uebersicht der Europaischen Spinnen- 
Familien. Mifcth. Ver. Steierm. 1877, pp. 98-114, 2 pis. 
Contains a list of the European families and genera of Spiders, with a 
table for the determination of families and sub-families. Those parts of 
spiders considered to be of systematic value are described, and illustrated 
in the two plates. 
P. Bertkatj, SB. niodcrrhoin. Gcs., 1877, pp. 28-30, makes some 
remarks on the generative organs and spermatozoa of Spiders, refer- 
ring on the same subject to a work by himself in Arch. f. Nat. 
xli. p. 235. The results of his observations are summed up as fol- 
lows : — The organs by which the seminal fluid is conveyed to the 
female spider consist of a “variously formed adjunct to the last joint of 
the palpus,” made up of two parts, a coiled tuba for the reception of the 
fluid, and a hollow body within which the tube is coiled. The sperma- 
tozoa of many (perhaps of all) spiders show energetic movements when 
freshly taken from the secreting vessels. These movements cease after 
a time, as they become coagulated into larger or smaller masses by some 
adhesive substance, which, after a longer or shorter interval, dissolves and 
the spermatozoa are set free. This is looked upon as an important pro- 
vision for the preservation of the vital power of the seminal fluid, which 
after having been emitted, and imbibed] by the palpal organs from the 
secreting vessels, may possibly (and probably often does) remain in them 
for some time before it is placed in the female receptacle. 
. Ueber fiinf bei Bingen gef undone Weibchen einer Eresus-art, 
wahrscheinlich E. cinnaherinus, Oliv., und die systomatische Stellung 
der Eresiden. Verb. Ver. Rheinl. (5) iv. pp. 267-282. 
Details the discovery, near Bingen, of some black females of Eresus 
which the author supposes, with good reason, to be the hitherto unknown 
