38 Arachn. 
ARACHNIDA. 
fig. 4, Laos, peccaris^ p. 283, fig. 6, Mauritius, callida, p. 284, fig. 7, 
Trinidad, fijhilis, p. 284, fig. 8, aud harpax^ p. 284, fig. 9, Sarawak, m- 
portuna, p. 286, pi. xxvii. fig. 12, and molesta, p. 286, fig. 13, West 
Central Africa, crepidophora, p. 287, fig. 14, Dorey, New Guinea, 
propinqua^ p. 288, fig. 16, Cambodia, claveata, p. 289, fig. 17, Celebes, 
simoni, p. 289, fig. 18, Cape York, acrosomoides, p. 289, fig. 19, Mada- 
gascar, wealii, p. 290, fig. 20, Caffraria, observatrix, p. 291, fig. 21, Pratos 
Reef, China Sea, proba^ p. 291, fig. 22, Caffraria, and rogersi, p. 292, 
fig. 23, River Coanza, spp. nn,, O. P. Cambridge, P. Z. S. 1879 ; G. frontata, 
Bl., p. 282, pi. xxvi. fig. 5, East Indies, G. madagascariensis^ Vins., p. 285, 
fig. 10, Madagascar, /ormosa, Vins., p. 285, fig. 11, Madagascar and S, & E. 
Africa, G. helva, Bl., p. 287, pi. xxvii. fig. 15, East Indies, figured ; id. 1. c. 
Atelacantha (Gasteracantha) heterodoxa, sp. n., Karscli, Z. ges. Naturw. 
(3) iv. 330, West Africa. 
Aetrocantha, g. n., closely allied to Butl. ; A. falken- 
steini, sp. n., Karsch, 1. c. p. 331, West Africa. 
Cyrtarachne bicurvata, sp. n., Becker, Ann. Ent. Belg. xxii. p. 77, pi. ii. 
figs. 16-19, Donaldson ville, Louisiana. 
Ccerostris stygiana, sp. n., A. G. Butler, P. Z. S. 1879, p. 731, Mada- 
gascar. C. ? sp., $ figured; Karsch, 1. c. pi. xi. figs. 10 & 11. 
Paraplectana thorntoni, Bl., figured from the Zambesi; 0. P, Cam- 
bridge, P. Z. S. 1879, pi. xxvii. fig. 24. 
Thlaosomatid.®. 
Celcenia [Tklaosoma, Cambr.] excavata, L. Koch, Karsch, 1. c. 
pp. 837-842, Australia. [The latter generic name has priority ; O. P. C.] 
Thlaosoma atJdnsoni, p. 699, fig. 7, and hectori, p. 700, fig. 8, spp. nn., 
Cambridge, P. Z. S. 1879, pi. lii. New Zealand. 
AbcY [i] DiE. 
Simon, E. Note sur les Epeiridce de la sous famille Arcyince. CR. Ent. 
Belg. xxii. pp. Iv.-lx. 
The author describes the chief characters of this group, and the points 
in which it agrees with and differs from the Epeiridce, of which he retains 
it as a subfamily. Ileterognatha, Nic,, = Epeira. Arcys proper is 
restricted to Australia, and Nicolet’s Chilian species, of which the types 
are now in the Paris Museum, prove to be generically distinct, having the 
cephalic region neither elevated nor angulose, and the area of the median 
eyes wider than its length. The following new genera and species are 
characterized : — 
Gnolus^ p. Iviii. Differs from Arcys as above, and from the next genus 
in its dorsally flat cephalo thorax, which abruptly slopes behind, and 
in the lateral eyes being approximated, but widely remote from the 
central. Eor Arcys parvulus and nigriventris, Nic., = spiculatory Nic. ; 
A. variabilis, Nic., = cordi/ormis, Nic.; and A. limbatus^ Nic. 
Oarces, p. lix. Differs from G/iolus in its cephalothorax being convex 
in the middle, and evidently sloping before and behind, also in the 
