AllACHNIDA. 
263 
a Pompilido {Ferreola distmcta, Smith ?) was almost constantly found in its 
Avob. The webs aro also haunted by Pal^ymicmus hmmatinus (Koch) = Chersis 
gihhidus (Diif.), which probably attacks and sucks the juices of the large $ 
Eresus, Erber found it firmly attached to the ajbdomen of the latter in two 
instances. 
Ercsus africanusy sp, n., Blackwall; 1. c. p. 453; from Tropical Africa, 
Av(jyopes sericea (Sav.). Oapello (Jorn. Acad. Sci. Lisb. i. pp. 80-82) 
discusses the characters of A^arious forms of Argyopes received by him from 
West Africa and the Cape Verde Islands, as compared with Portuguese spe- 
cimens, and comes to the conclusion that they all constitute varieties of the 
above species. lie admits tAA^o primaiy varieties, namely, var. A. Cuho^ 
verdiana (from the Cape Verde and Bissau) = A, clarkii (Blackw,), A. 
splendidzts (SaA'.), Epeira splcndida (Walck.) j and A^ar. B. Zairiensis (from 
the Niger and the Zambesi) = A. caudatus (Blackw.). The species is 
figured with the abdomen in various forms, pi. 2. fig. 1. 
Argyopes flcmipcdpis (Luc.). Capello {1. c. pp. 83-84) describes some spe- 
cimens which he refers to this species, and figures the young and adult fe- 
males, pi. 2.. fig. 2. 
Argyopes gracilis, sp. n., Blackwall, p. 464, from Tropical Africa. - - 
Nephila aiibryi (Luc.) = N. gruyii (Blackw.) =? N. keyscrUngii (Blackw.). 
See Capello, 1 . c. pp. 85-80, pi. 2. fig. 3. 
Eurysoma vicina, sp. n., BlacltAvall, 1 . c. p. 405, from Tropical Africa. 
Tetragnatha f estiva, sp. n., BlacltAvall, 1. c. p. 407, Tropical Africa. — Tctra^ 
gnatlia cahindce, sp. n., Capello, 1 . c. p. 86, pi. 2, fig. 6, Cabinda. 
Nephila ptiumipes. B. G. Wilder describes this species and its habits 
(Proc. Amer. Acad. vii. pp. 62-67). It produces a large, strong, yellow, 
geometric Aveb, consisting chielly of golden-yelloAV silk, but Avith portions of 
silver-Avhite threads at intervals. The materials for these differently coloured 
threads, ho says, are furnished by diflerent spinnerets ', and ho describes his 
experiments in Avinding the silk from the body of the spider, which he thinks 
may lead to a neAV source of silk. See also Proc. Bost. Soc. Nat. Hist. x. pp. 
200-210. 
Cyclosa, g. n., Menge, 1. c. p. 73. Allied to Epeira ’, forehead projecting in 
front ; frontal eyes larger than the rest j club of d palpi with an elongated. 
Clawed, obliquely truncated process at its base, and a tongue-shaped sperma- 
tophoro Avith a Avhip-llke penetrant organ at its extremity ; clavus of genital 
operculum in $ lanceolate. Sp. Aranea conica (De G.), p. 74, pi. 12, 
tab. 18. 
Ccrceis, Menge, l.c. p. 80. Allied to Singa', digital joint of (S palpi 
Avith a short hooked process ; basal joint of palpal organs Avith a short tooth 
Avith 2 aAvl-shaped points, its last joint Avitli an awl-shaped penetrant organ 
and a boat-like, curved sperniatophore j genital operculum in $ with a 
semicircular clavus. Sp. Swga p)^'omincns (Sund., Westr.), p. 80, pi. 13. 
tab. 21. 
PEDIPALPI. 
Androctonus peloponensis. The habits of this species, and especially the 
effects of its sting upon various animals, gre briefly referred to by Erber, Verb, 
zool.-bot, Ges. in Wien, xvi. p. 827. 
