206 
AllACHNIDA. 
ARANEIDEA, 
Bertkau, Philipp. Ueber die Respirationsorgane der Araneen. 
Arch. f. Nat. xxxviii. (1872), Heft 2, pp. 208-233, pi. vii. 
The author, after briefly indicating the various works in which the respi- 
ratory system of the Aranece or true spiders is discussed (including 
Ijeuckart’s suggestion that the so-called lungs of the Arancidea are only a 
special modification of the peculiar tracheal system of the class), describes 
at great length the anatomical structure of the lungs ” and tracheae in 
various genera and groups, figuring the various portions of, or connected 
with, the ‘‘fan tracheae” of Zilla calophylla (figs. 1 & 2), Oletera picea 
(fig. 3), and Xysticus viaticus (fig. 4), and of the tubular tracheae of Dysdera 
crythrina (fig. 6), Seyestria havarica (fig. 0), Biclyna heniyna (figs. 7 & 8), 
Micrypluintcs rubripes (fig. 0), Bondryphautcs muscosus (fig. 10), Thomisus 
calycinus (fig. 11), Mdanophora suhteiTanea (fig. 12), Zilla calophylla (fig. 13). 
He proposes the following classification, chiefly based on the respiratory 
organs (as here abstracted) : — 
Earn. Scytodides : 2 fan tracheae in front, 4 simple tubular tracheae at apex 
of abdomen ; Scytodes. Fam. Micryphantides : 2 slightly developed fan 
tracheae in front of abdomen ; a wide gaj) before the spinning-nipples, lead- 
ing to a well-developed tracheal system, consisting of a main trunk giving 
oft' cylindrical vessels ; Dictyna, Eriyonej Micryphantes. Fam. Sparassides : 
2 foliate tracheae in front of abdomen, at the apex 4 uubranched cylindrical 
tracheae ; 'Thanatus, Sparassus {^Micrommata ?). Adopting these families, 
the Araneidea may be thus grouped : — 
2 pairs of fan tracheae Myyalides. 
1 pair of fan tracheae. 
1 pair of tufted tubular tracheje, 
with separate stigmata Dysderides and Aryyroueta, 
Avith common aperture Mici'yplumtides, Attides. 
1 pair of arborescent branchiate tubular tracheae, with common aperture. 
Thomisides. 
4 simple tubes, common aperture Scytodides, Drassides, Age- 
lenides (except Argyro- 
neta), Epeirides, Tlieri- 
diidcs (greater part). Spa- 
7‘(issidesj Lycosides, 
Cambridge, O. P. General List of the Spiders of Palestine and 
Syria, with descriptions of numerous new species, and cha- 
racters of two new genera. P. Z. S. 1872, pp. 212-354, 
pis. xiii.-xvi. 
Records 278 species, of which 151 are described as new. 
. On British Spiders. A Supplement to a communica- 
tion On British Spiders new to Science &c., read before 
the Linnean Society, January 20th, 1870. Tr. L. S. xxviii. 
pp. 433-458, pis. 33-35. 
Records numerous species new to Britain, and 7 species new to science. 
