THE GENERAL SUBJECT^, A RAN BIDE A. Araclvi . 5 
1 ; Pseudoscorpiones (as Chernetes, fain. Cheliferidce), 3 ; Plialangidea 
(^Opiliones)^ 3 ; all known. 
The same author, under the title of “ Excursions en Belgique ” (OR. 
Ent. Belg. xxiii. pp. cxlii. & cxliii.) records various species of Aranndm, 
Pseudoscorpiones^ and Phalangidea, either new to Belgium or otherwise 
of local interest ; and, under heading of “ Communications Arachnolo- 
giques” (1. c. pp. clxxxviii. & clxxxix.), records 12 species of Araneidea 
and 3 of Pseudoscorpiones from Mariemburg; 1 of the former {Linyphia 
cristata, Meuge) new to Belgium. 
Eugene Simon, Bull. Soc. Ent. Fr. (5) x. p. xxxvi., gives a list of IG 
Arachnids (12 Araneidea, 1 Scoipiones, 1 Pseudoscorpiones, and 1 Phalan- 
gidea) found at Sebenico, Dalmatia, by Munier Chalmas ; 1 species 
{Araneidea) being new. 
Also (Z. c. pp. xlvii. & xlviii.) lists of Arachnids found in the immediate 
environs of Alexandria, Egypt : Araneidea 14, Pseudoscorpiones, 1 ; all 
known species. 
ARANEIDEA. 
Barrois, J. Recherches sur le developpement des Araign^es. J. Anat. 
Phys. xiv. p. 527 ; translated by W. E. Dallas, Ann. N. H. (5) v. 
pp. 197-211, pi. ix. 
The Spiders investigated are Tegenaria domestica, C. Koch, Epeira 
diadema, C. L. K., and some species of Lycosa (not named). The works 
of Balbiani, Ludwig, Olaparede, Metschnikoff, and others, are referred 
to. Attention is drawn to a Limuloid stage of development, and to a 
vitelline vesicle corresponding to that of fishes. 
P. Bertkau (Vorgetragen in der Herbstversammlung des naturhisto- 
rischen Vereins am 3 October, 1880, im Bonn), in reference to the Spiders 
found near Bonn {vide anted, p. 2), remarks on the wide geographical 
distribution of some of them, and compares those of the Bonn district 
with those of Munster and its neighbourhood recorded by F. Karsoh 
(1873), of Niirnberg by L. Koch, Danzig by A. Menge, Silesia j by 
Fickert (1876), and Switzerland by Lebert. Remarks are also made 
upon the comparative sizes of the sexes in some Spiders, with other inte- 
resting and important observations on structure, &c. 
C. V. Boys describes the influence of a tuning-fork on a Garden Spider; 
Nature, xxiii. p. 149. 
F. M. Campbell (J. L. S. xv. pp. 152-155, with woodcut figures) 
writes upon the stridulating organs of Spiders, quotes Westring, Wood- 
Mason, Darwin, and 0. P. Cambridge, and describes and figures the 
supposed stridulating apparatus of Steatoda guttata, Wid., and Linyphia 
tenehricola, Wid., that of the former being seated beneath the fore 
extremity of the abdomen, and hinder extremity of the thorax, while 
that of the latter is on the outer side of the falces and opposed humeral 
joints of the palpi. The apparatus is, in each case, found in both sexes, 
whereas Westring speaks of it in the male only. 
The same author (Z. c. pp. 155-158, with woodcuts) notes certain 
