3 Arachnida für 1913, 
Heselhaus, Fr. Über Arthropoden in Maulwurfsnestern. In: 
Tijdschr v. Entomol. LVI, p. 195—240, 1 Taf. — Bei Sittard ge- 
sammelt. Auch Arachniden: drei Chernes-Arten, nicht näher be- 
stimmt, aber mit einigen biologischen Mitteilungen dazu; die 
Opilionen und Araneae hat Strand bestimmt (Metopoctea melano- 
tarsus Herm., Lephthyphantes pallidus O. Chbr., Walckenaera obtusa 
Bl. und Gongylidiellum vivum O. Cbr.), die Milben bestimmte 
Oudemans, im ganzen 45 Arten, darunter 8 nn. spp., deren Be- 
schreibung sowie die übrige Bearbeitung des Milbenmateriales 
Oudemans in Archiv f. Naturgeschichte veröffentlicht hat. Hesel- 
haus gibt biologische Mitteilungen über Euryparasitus terribilis 
Mich. und Haemogamasus hirsutus Berl. — Pag. 240 werden in 
einem Nachtrag noch 30 bei Valkenburg gesammelte Milbenarten 
verzeichnet. 
Hewitt, John (1). Descriptions of new and little known 
species of trapdoor spiders (Ctenizidae and Migidae) from South 
Africa. In: Rec. Albany Mus. 2, p. 404—434, 3 Textfiguren. 
— (2). Descriptions of new species of Arachnida from Cape 
Colony. Ebenda p. 462—481, 5 digg. 
— (3). Description of a new Trap-door spider from Cape 
Colony. In: Ann. Transvaal Museum 4, p. 47. 
Hilton, William A. (1). The Nervous System of Chelifer. In: 
Journ. Entomol. Zool. Claremont 5, p. 189—201, 4 figg. — Verf. 
gibt selbst folgendes Resümee: ‚There are no important abdominal 
ganglia beyond the fused mass of the central nervous system. 
The pedipalpal nerves are the largest. A small number of simple 
more or less straight tracheoles penetrate the nervous system. 
There are few deep-staining masses of fibers. The cells have very 
little cytoplasm. The nuclei are usually provided with six or more 
chromatin granules. The sense organs so far as determined are: 
a pair of simple eyes and hollow setae provided with nerves from 
bipolar nerve cells. The cells of the brain are largely unipolar, 
but other forms are found. The neuroglia cells form a network of 
their fibers and this network between nerve cells serves as a sort 
of sheath for them. The fibrous part of the nervous system also 
has strands from neuroglia cells and this forms a support for the 
nerve fibers which run in various parts of the ganglia. There are 
very slight indications of mushroom bodies. Apparently the two 
great masses of cells inthe brain are associated with the mandibulo- 
rostral and optic nerves. The peripheral ganglia are represented 
by irregular masses of cells. Besides numerous short connections 
there are large tracts running from the brain to other levels, and 
a dorsal and ventral longitudinal tract in the subesophageal 
ganglion. There are two to three well marked commissures in the 
ventral mass of the nervous system. The brain is closely fused 
with the ventral mass of the ganglion. There are no abdominal 
ganglia. In general the nervous system is more like that of a 
spider than of a scorpion.“ 
